Glass beads as a low cost of particulate matter, is often used in mechanical descaling, urban traffic road zebra crossing, reflective and traffic signs forbid line night retroreflecting device. Its main chemical composition is sio2, from material to see this kind of material has the characteristics of high hardness, its appearance is bright and clean, roundness, some is transparent, round rate is as high as 85% above. The substance mixed in the plastic products to make plastic products with good toughness, but not their own hardness and lower. Glasss beads also has the characteristics of high melting point, can be applied in fire insulation engineering. High insulation properties can be used in high polymer insulation filling work. Glass beads of the density of 1.78 g/cm3, mixes with engineering plastics can obviously to achieve the effect of weight loss. Corrosion resistance is also a highlight the advantages of glass beads, some industrial plastic products will add some glass beads, corrosion resistance characteristics can be achieved. In short, the development of glass beads market prospect is very broad, temporarily not in the position in the market.
Due to the unique advantages of glass beads, glass beads are mainly used in the following aspects:
1, Road Marking Glass Microspheres
Main application interesting type and type hot melt road marking paint. Divide into two kinds, premixed and surface and premixed type glass beads can be in the production of hot melt type when the road coating mix in the paint, can ensure long-term reflective road marking in the life period. Another available in road marking construction over marking a instant reflection effect on the surface. After surface treatment of coated glass beads, used in road marking construction, and can greatly increase the glass beads with hot melt marking of adhesion, enhance road marking the refractive index, and have since used clean dirt, moisture resistance, etc. Road with glass beads coating resistance to improve pavement performance, improve the security of the driver at night.
2, glass beads in medical equipment and nylon, rubber, engineering plastics, aviation and so on various fields as a new kind of material has been widely used. Such as add agent, strengthening agent, etc.
3, arts and crafts glass bead, glass sand and colored glass beads, garment printing, garment pyrograph, surface decoration, artificial Christmas tree fruit, artificial flowers products surface decoration, the manufacture hourglass quicksand ideal!
4, used in industrial blasting and additive effect of the surface of the glass beads can be in metal and die surface, does not damage the workpiece surface, and improve the precision of the workpiece. Used for metal, plastic, metal jewelry, precision casting, such as cleaning and polishing of the object. Is widely used at home and abroad of high-grade finishing materials.
5, high refractive index glass beads is reflective fabric, reflective coatings, chemical coatings, advertising materials, clothing materials, reflective film, reflective fabric, reflective sign identification, airport runway, shoes and hats, bags, with both life-saving supplies, nocturnal staff wearing required materials and other products.
2015年3月12日星期四
What is Cocoamidopropyl Sulfobetaine?
Cocoamidopropyl Sulfobetaine ASB is a kind of amphoteric ion surfactant, on the stability of
acidic and alkaline conditions are excellent, present Yang and anion, respectively, with
Yin, cationic and nonionic surfactants with, its compatibility good performance. Non-toxic,
excitant small, soluble in water, acid and alkali stability and foam, strong detergency,
with excellent thickening, softness and sterilization, antistatic property and resistance to
hard water. Can significantly increase the washing soft, regulate and low temperature
stability of the products.
Product features
1. Have good solubility and compatibility;
2. It has excellent foaming and obvious thickening;
3. Low irritating and sterilization, compatibility with washing products can obviously
improve the soft soft, regulate and low temperature stability;
4. With more excellent than CAB hard water resistance, antistatic property and
biodegradability;
5. Of the amide type sulfo betaine has better mild and bubble and bubble;
6. Is thickening performance for soap base.
use
Widely used in shampoo, bath; Is the preparation of mild baby shampoo and bubble bath, the
main components of the baby skin care products; In the skin and hair care formula is a kind
of excellent softening conditioner; Also can be used as detergents, wetting agent,
thickening agent, antistatic agent and bactericide.
storage
50 kg, 200 kg plastic drum, stored in a cool ventilated place, valid for one year.
Amphoteric surfactants usually has a good washing, dispersion, emulsification,
sterilization, such as soft fiber with antistatic performance, can be used as a textile
finishing auxiliaries, dyeing auxiliaries, calcium soap dispersant, dry cleaning surfactants
and metal corrosion inhibitor and so on. But, more expensive, the price of this kind of
surfactant application range smaller than other types of surfactants.
About us
Located in East China Plain, Sinopec Jinling Petrochemical Co., Ltd is a subsidiary of China
Petrochemical Group, a high-tech, share-holding enterprise, which is engaged in development,
production & business operation, technical service and project design of chemicals.
Jinling branch’s products are nearly 70 species and more than 30 kinds of products has won
the national, ministry, provincial title of quality products, has become the major suppliers
in Chinese local market and also become an important production base of providing raw
materials. Except for the domestic market, we have been exporting to Southeast Asia, Middle
-East and Africa etc., more than 30 countries and region.
With the total capacity of 90000 tons/year of two sets of sulfur device 300000
tons/year sodium alkyl benzene equipment, our product is guaranteed by its advanced imported
equipment, exquisite workmanship, prefect management system as well as excellent-equipped
laboratory.
We welcome friends and partners all over the world to visit our company and establish
cooperation with us.
acidic and alkaline conditions are excellent, present Yang and anion, respectively, with
Yin, cationic and nonionic surfactants with, its compatibility good performance. Non-toxic,
excitant small, soluble in water, acid and alkali stability and foam, strong detergency,
with excellent thickening, softness and sterilization, antistatic property and resistance to
hard water. Can significantly increase the washing soft, regulate and low temperature
stability of the products.
Product features
1. Have good solubility and compatibility;
2. It has excellent foaming and obvious thickening;
3. Low irritating and sterilization, compatibility with washing products can obviously
improve the soft soft, regulate and low temperature stability;
4. With more excellent than CAB hard water resistance, antistatic property and
biodegradability;
5. Of the amide type sulfo betaine has better mild and bubble and bubble;
6. Is thickening performance for soap base.
use
Widely used in shampoo, bath; Is the preparation of mild baby shampoo and bubble bath, the
main components of the baby skin care products; In the skin and hair care formula is a kind
of excellent softening conditioner; Also can be used as detergents, wetting agent,
thickening agent, antistatic agent and bactericide.
storage
50 kg, 200 kg plastic drum, stored in a cool ventilated place, valid for one year.
Amphoteric surfactants usually has a good washing, dispersion, emulsification,
sterilization, such as soft fiber with antistatic performance, can be used as a textile
finishing auxiliaries, dyeing auxiliaries, calcium soap dispersant, dry cleaning surfactants
and metal corrosion inhibitor and so on. But, more expensive, the price of this kind of
surfactant application range smaller than other types of surfactants.
About us
Located in East China Plain, Sinopec Jinling Petrochemical Co., Ltd is a subsidiary of China
Petrochemical Group, a high-tech, share-holding enterprise, which is engaged in development,
production & business operation, technical service and project design of chemicals.
Jinling branch’s products are nearly 70 species and more than 30 kinds of products has won
the national, ministry, provincial title of quality products, has become the major suppliers
in Chinese local market and also become an important production base of providing raw
materials. Except for the domestic market, we have been exporting to Southeast Asia, Middle
-East and Africa etc., more than 30 countries and region.
With the total capacity of 90000 tons/year of two sets of sulfur device 300000
tons/year sodium alkyl benzene equipment, our product is guaranteed by its advanced imported
equipment, exquisite workmanship, prefect management system as well as excellent-equipped
laboratory.
We welcome friends and partners all over the world to visit our company and establish
cooperation with us.
2015年1月20日星期二
Hollow glass microsphere market trend
Hollow glass beads is widely appeared in recent years a new type of material, material prototypes for borosilicate, when viewed under a microscope to present hollow sphere shape, particle diameter of 10 to 200 microns, the wall thickness of a few microns, internal for carbon dioxide gas, light weight, low thermal conductivity, and non-toxic tasteless, stable chemical properties, not combustion, which is widely applied in many high-tech fields, Such as space equipment anticorrosion work, reflective application of road zebra crossing, and you also can be used in the construction industry, such as wallboard interlining used sound-absorbing noise reduction, exterior wall coating, etc. Hollow glass microsphere, specific performance and application is as follows:
1, big volume weight. Its density is one of the points of traditional particle density, can reduce the product weight, reduce the cost.
2, good dispersibility, hydrophilic surface can be used to fill in polyester, unsaturated resin, liquidity is good; High whiteness, strong hiding power,
3, internal rarefied gas with functions of heat preservation and heat insulation, sound-absorbing noise reduction, from the same industry.
4, high resistance, low water absorption, in wire and cable insulation material processing applications.
Hollow glass beads, in general, high whiteness, low density, body a lot of light, oil absorption, waterproof thermal insulation and other functions, has applications in several industries, is a kind of material is widely used.
The market trend
Glass beads as a low cost of particulate matter, is often used in mechanical descaling, urban traffic road zebra crossing, reflective and traffic signs forbid line night retroreflecting device. Its main chemical composition is sio2, from material to see this kind of material has the characteristics of high hardness, its appearance is bright and clean, roundness, some is transparent, round rate is as high as 85% above.
The substance mixed in the plastic products to make plastic products with good toughness, but not their own hardness and lower. Glass beads also has the characteristics of high melting point, can be applied in fire insulation engineering. High insulation properties can be used in high polymer insulation filling work. Glass beads of the density of 1.78 g/cm3, mixes with engineering plastics can obviously to achieve the effect of weight loss. Corrosion resistance is also a highlight the advantages of glass beads, some industrial plastic products will add some glass beads, corrosion resistance characteristics can be achieved. In short, the development of glass beads market prospect is very broad, temporarily not in the position in the market.
Contact us
Glass Microspheres supplier--Nanjing Jianzun Glass Microsphere Plant Co.,Ltd was established in 2000,located in Jiangsu province, specializing in the production of all kinds of Glass Microspheres also called Glass Microbeads or Glass Bubbles, solid glass microspheres, hollow glass microspheres which is widely used in paint, plastics, artificial marble , synthetic foam board and explosive and so on.
The silicone application - silicone wire and cable
Silica gel has good flexibility, ability of ozone, corona, flame, insulation performance is good, used for wire and cable is that it is mainly used in the electrical industry, silicone wire and cable is especially suitable for use in high temperature environment, the silicone is much higher than the ordinary cable wire and cable life. The following are the main types of silicone rubber wire and cable.
1, equipment, instrument with no woven along the route
Rated voltage: 300 v and 600 v;
Temperature: 150 ℃ and 200 ℃;
Features: no weaving dirt, heat resistance, flame resistant, mechanical flexible and good toughness;
Purpose: high temperature motor, transformer, generator, electronics, electrical equipment.
2, equipment, instrument with woven lead line
Rated voltage: 300 v and 600 v
Use temperature: 150 ℃, 155 ℃, 180 ℃ and 200 ℃
Structure: tin stranded copper wire, silicon rubber insulation, asbestos or glass fiber woven belt;
Features: heat resistant, flame resistant, flexible
Purpose: high temperature motor, transformer, generator
3, Marine cable
Rated voltage: 300 v and 5000 v;
Temperature: 95 ℃;
Structure: tinned copper stranded wire, silicone rubber insulation, glass fiber woven belt. If the conductor is more than one, but the conductor with the gasket, adhesive tape, PVC casing, aluminum or bronze armoured cable a rope;
Features: heat resistant, resistant to moisture, without conductive ashes;
Purpose: general Marine power and control cables, especially suitable for more than 50 ℃, environment temperature and besides fire resistant, heat resistant to resistant to moisture.
4, power and control cables
Rated voltage: 600 v and 5000 v
Temperature: 125 ℃
Structure: a. power cable: tinned copper stranded wire, silicone rubber insulation tape, asbestos braid; B. control cable: tinned copper stranded wire, silicone rubber insulation, glass fiber woven belt, put two or more than two wires and tapes, asbestos braid twist into a rope.
Features: heat resistant, resistant to moisture and ozone resistance, room temperature and low temperature flexibility, current carrying capability is strong, resistant to radiation, flame resistant, no conductive ash, no corrosion of smoke.
Purpose: high temperature, wet and dry places, and radioactive environment power line, the line of control and signal lines.
5, automotive ignition cable
Rated voltage: 35 kv (ac)
Use temperature: 177 ℃ to 232 ℃
Structure: a conductive glass fibre core, ethylene propylene rubber insulation, flat woven glass fiber woven tape, silicone rubber sheath.
Features: high temperature resistant, resistant to ozone, high dielectric strength, good reliability
Purpose: passenger cars, trucks and other transportation vehicle engine on the ignition cable
About us
Silica gel supplier----Fenglong Chemical Co., Ltd. is primarily engaged in manufacturing silica gel since 2001. Our silica gel manufacturing plant is located in Maanshan with manufacturing capacity of more than 500-MT silica gel per year. We are manufacturing Indicating silica gel & Non-Indicating type of SILICA GEL in all grades such as blue silica gel, orange silica gel and basic silica gel such as type A silica gel , type B silica gel ,type C silica gel and another special silica gel Column chromatography silica gel . We are Chinese manufacturer of silica gel and supplying it across the world. Silica gel manufactured by us is of best quality which is widely used as cat litter, desiccant silica gel in anti-rusting and moisture-proof of product, packaging, drying and separation of gases, the catalyst carrier of petrochemical industry and so on.
2014年8月14日星期四
Hydrazine hydrate
Hydrazine hydrate, with a strongly alkaline and hygroscopic . Pure product is colorless transparent oily liquid with a light ammonia odor, smoke in the wet air, with a strongly alkaline and hygroscopic . Liquid hydrazine hydrate with water and ethanol, insoluble in ether and chloroform; it can erode glass, rubber , leather, cork , etc., decompose at high temperatures into N2, NH3 and H2; hydrazine highly , with halogens , HNO3 , KmnO4 other violent reaction in the air can absorb CO2, produce smoke . Hydrazine and its derivatives products in many industrial applications has been widely used as a reducing agent , antioxidant, used for making medicine , foaming agents , etc.
Use
Hydrazine hydrate as an important fine chemical raw materials, mainly for the synthesis of AC, D1PA, TSH and other foaming agent ; also used as boiler and reactor deoxidation and cleaning off the carbon dioxide treatment agent ; in the pharmaceutical industry for the production of anti- tuberculosis, anti-diabetic , anti-tumor drugs ; in the pesticide industry for the production of herbicides, plant growth reconcile agent and sterilization, insecticide, rat poison ; addition, it can also be used to produce rocket fuel , diazo fuel , rubber additives , car airbags, LCD intermediates. In recent years, applications of hydrazine hydrate are still expanding.
a) for the synthesis of a foaming agent . With hydrazine hydrate as raw material to manufacture ADC foaming agent , and its gas evolution obviously much higher than other similar products , and non-toxic , tasteless, not color, not bad.
b) for the synthesis of pesticides. Hydrazine derivatives are used as a pesticide plant growth regulator maleic hydrazide derivatives , rodenticides two mice agent dinitrophenylhydrazine , insecticidal agents nails pyrazole derivatives with a 5 - nitrofuran thioacetazone , weeding agents such as amino- triazole .
c) medicine . Isoniazid, Fenji thioacetazone , benzenesulfonyl thioacetazone , antipsychotics 1 - Isonicotinic acetyl-2 - isopropyl hydrazine, hydrazine derivatives aldehyde anticancer drugs ,
Hydrazine can be directly used :
Industrial boilers and high pressure steam boiler in water oxygen scavenger . Hydrazine hydrate is a deoxidizer , which enables reduction of dissolved oxygen in the water , boiler feed water is used to further remove the residue after thermal oxygen by trace dissolved oxygen. Because for dissolved oxygen can cause corrosion of boiler tubes . The boiler feedwater hydrazine hydrate , not only oxygen, but also to prevent fouling of iron and copper boiler scale formation .
Hydrazine is a highly reducing agent , can be synthesized by the following products:
1 foam: Most of the hydrazine derivative as a blowing agent is azodicarbonamide (AC), and p-toluenesulfonic acid hydrazide . ( Azo- carboxamide ) ( eg : tube used for the production of sodium azide product ) .
(2) agricultural products and pharmaceutical products in the synthesis of biologically active intermediates , first generation triazole.
3 azo initiators
4 various other products: The dye certain organic pigments , photographic reagents aspect , urethane , and acrylic esters , and cyanide bromate products.
5 of plastic and metal ( nickel, cobalt, iron , chromium, etc. ) of a metal inlay.
6 is a rocket fuel formulations.
7 In the ACTIRED used in the process , the process is mainly used in gold processing .
About us
hydrazine hydrate supplier ----TongJiu Hydrazine Hydrate Industry Co., Ltd was found in 2002, Located at Xinhua West Road 10#, NanJing City, China, mainly producing hydrazine hydrate. Our company mainly specializes in the production and research & development of auxiliary agents for oil field, including 1h-1,2,4-triazole, hydrazine monohydrate,o-chlorbenzyl chloride and so on. The production capacity of aminoguanidine bicarbonate is 15000 mts per year, and sodium hormate is 25000 mts per year.and 2-cyano-4-nitro-6-bromoaniline 18000mts per year.
Use
Hydrazine hydrate as an important fine chemical raw materials, mainly for the synthesis of AC, D1PA, TSH and other foaming agent ; also used as boiler and reactor deoxidation and cleaning off the carbon dioxide treatment agent ; in the pharmaceutical industry for the production of anti- tuberculosis, anti-diabetic , anti-tumor drugs ; in the pesticide industry for the production of herbicides, plant growth reconcile agent and sterilization, insecticide, rat poison ; addition, it can also be used to produce rocket fuel , diazo fuel , rubber additives , car airbags, LCD intermediates. In recent years, applications of hydrazine hydrate are still expanding.
a) for the synthesis of a foaming agent . With hydrazine hydrate as raw material to manufacture ADC foaming agent , and its gas evolution obviously much higher than other similar products , and non-toxic , tasteless, not color, not bad.
b) for the synthesis of pesticides. Hydrazine derivatives are used as a pesticide plant growth regulator maleic hydrazide derivatives , rodenticides two mice agent dinitrophenylhydrazine , insecticidal agents nails pyrazole derivatives with a 5 - nitrofuran thioacetazone , weeding agents such as amino- triazole .
c) medicine . Isoniazid, Fenji thioacetazone , benzenesulfonyl thioacetazone , antipsychotics 1 - Isonicotinic acetyl-2 - isopropyl hydrazine, hydrazine derivatives aldehyde anticancer drugs ,
Hydrazine can be directly used :
Industrial boilers and high pressure steam boiler in water oxygen scavenger . Hydrazine hydrate is a deoxidizer , which enables reduction of dissolved oxygen in the water , boiler feed water is used to further remove the residue after thermal oxygen by trace dissolved oxygen. Because for dissolved oxygen can cause corrosion of boiler tubes . The boiler feedwater hydrazine hydrate , not only oxygen, but also to prevent fouling of iron and copper boiler scale formation .
Hydrazine is a highly reducing agent , can be synthesized by the following products:
1 foam: Most of the hydrazine derivative as a blowing agent is azodicarbonamide (AC), and p-toluenesulfonic acid hydrazide . ( Azo- carboxamide ) ( eg : tube used for the production of sodium azide product ) .
(2) agricultural products and pharmaceutical products in the synthesis of biologically active intermediates , first generation triazole.
3 azo initiators
4 various other products: The dye certain organic pigments , photographic reagents aspect , urethane , and acrylic esters , and cyanide bromate products.
5 of plastic and metal ( nickel, cobalt, iron , chromium, etc. ) of a metal inlay.
6 is a rocket fuel formulations.
7 In the ACTIRED used in the process , the process is mainly used in gold processing .
About us
hydrazine hydrate supplier ----TongJiu Hydrazine Hydrate Industry Co., Ltd was found in 2002, Located at Xinhua West Road 10#, NanJing City, China, mainly producing hydrazine hydrate. Our company mainly specializes in the production and research & development of auxiliary agents for oil field, including 1h-1,2,4-triazole, hydrazine monohydrate,o-chlorbenzyl chloride and so on. The production capacity of aminoguanidine bicarbonate is 15000 mts per year, and sodium hormate is 25000 mts per year.and 2-cyano-4-nitro-6-bromoaniline 18000mts per year.
How to choose silica gel supplier
Usage by Product Category
1 , medicinal , food silica gel desiccant
Food and Drug silica gel desiccant criteria are to meet State Food and Drug Administration to develop pharmaceutical packaging containers ( material ) Standard: " Medicinal solid desiccant paper bags standard " , the standard provides for " solid dosage filter bags packed spherical pore silica gel desiccant "requirement, which in addition to the desiccant bag appearance , strength, moisture adsorbent , desiccant moisture absorption rate and other basic performance requirements, focusing on the content of harmful substances in the desiccant ( eg : arsenic , etc. ) , microbial limits , bleaching performance and other aspects of the regulations.
2 , shoes with silica gel desiccant
Shoes with silica gel desiccant can be considered for general cargo dry, moisture desiccant. The main requirement silica gel desiccant itself does not contain relevant international standards in the prohibited substances , packaging materials Breathable and durable, while its upper reaches other desiccant adsorption effect can not be achieved .
3, Electronic products with silica gel desiccant
Electronic products, especially for packaging moisture-sensitive electronic components and humidity control also has a very high demand , the United States Association Connecting Electronics Industries (IPC) and the U.S. Joint Electron Device Engineering Council (JEDEC) jointly prepared " moisture-sensitive surface mount components packing and shipping process using the standard "
J-STD-033b is being widely used for moisture-sensitive electronic components surface treatment, drying, drying and packaging requirements in all aspects of the comprehensive standard . The standard provisions in Chapter 3 of these electronic components dry packaging requirements.
4 , the container with silica gel desiccant
Container with silica gel desiccant is mainly used for shipping containers , used to adsorb the ocean containers during transport or storage container and humid climate and the oceans since experienced a large diurnal temperature variation inside the container into water vapor will condense beads and the formation of the " container rain " , to reduce the moisture content of the air in the container to prevent the generation of container rain .
About us
SILICA GEL supplier----Fenglong Chemical Co., Ltd. is primarily engaged in manufacturing silica gel since 2001. We are manufacturing Indicating silica gel & Non-Indicating type of SILICA GEL in all grades such as blue silica gel, orange silica gel and basic silica gel such as type A silica gel , type B silic gel ,type C silica gel and another special silica gel Column chromatography silica gel . We are Chinese manufacturer of silica gel and supplying it across the world. Silica gel manufactured by us is of best quality which is widely used as cat litter, desiccant silica gel in anti-rusting and moisture-proof of product, packaging, drying and separation of gases, the catalyst carrier of petrochemical industry and so on.
1 , medicinal , food silica gel desiccant
Food and Drug silica gel desiccant criteria are to meet State Food and Drug Administration to develop pharmaceutical packaging containers ( material ) Standard: " Medicinal solid desiccant paper bags standard " , the standard provides for " solid dosage filter bags packed spherical pore silica gel desiccant "requirement, which in addition to the desiccant bag appearance , strength, moisture adsorbent , desiccant moisture absorption rate and other basic performance requirements, focusing on the content of harmful substances in the desiccant ( eg : arsenic , etc. ) , microbial limits , bleaching performance and other aspects of the regulations.
2 , shoes with silica gel desiccant
Shoes with silica gel desiccant can be considered for general cargo dry, moisture desiccant. The main requirement silica gel desiccant itself does not contain relevant international standards in the prohibited substances , packaging materials Breathable and durable, while its upper reaches other desiccant adsorption effect can not be achieved .
3, Electronic products with silica gel desiccant
Electronic products, especially for packaging moisture-sensitive electronic components and humidity control also has a very high demand , the United States Association Connecting Electronics Industries (IPC) and the U.S. Joint Electron Device Engineering Council (JEDEC) jointly prepared " moisture-sensitive surface mount components packing and shipping process using the standard "
J-STD-033b is being widely used for moisture-sensitive electronic components surface treatment, drying, drying and packaging requirements in all aspects of the comprehensive standard . The standard provisions in Chapter 3 of these electronic components dry packaging requirements.
4 , the container with silica gel desiccant
Container with silica gel desiccant is mainly used for shipping containers , used to adsorb the ocean containers during transport or storage container and humid climate and the oceans since experienced a large diurnal temperature variation inside the container into water vapor will condense beads and the formation of the " container rain " , to reduce the moisture content of the air in the container to prevent the generation of container rain .
About us
SILICA GEL supplier----Fenglong Chemical Co., Ltd. is primarily engaged in manufacturing silica gel since 2001. We are manufacturing Indicating silica gel & Non-Indicating type of SILICA GEL in all grades such as blue silica gel, orange silica gel and basic silica gel such as type A silica gel , type B silic gel ,type C silica gel and another special silica gel Column chromatography silica gel . We are Chinese manufacturer of silica gel and supplying it across the world. Silica gel manufactured by us is of best quality which is widely used as cat litter, desiccant silica gel in anti-rusting and moisture-proof of product, packaging, drying and separation of gases, the catalyst carrier of petrochemical industry and so on.
2014年6月11日星期三
Silicone industry trends
Silicone industry trends
Because the development time is limited, is limited experience accumulation and innovation of science and technology, the overall quality of the domestic silicone industry and abroad have a certain gap. Domestic production by now most of the products can meet the customer's production requirements, but meet customers require very high performance or special analysing situation still needs to be imported. On the special rubber and high-performance rubber, the domestic market there is a big gap. Second, since the silica gel industry is a capital-intensive industry, the current economic situation of the gravity of the also determines its survival environment, cash flow difficulties, serious product homogeneity, raw material prices rising, the survival of enterprises encountered great challenge. In addition, the silicone rubber industry is now form a vicious circle of price war, some manufacturer customer object for low-end manufacturers, constantly keep prices down, the whole industry profit margins shrinking.
On the other hand, the prospect of the silicone industry is considerable. Silicone industry is a capital-intensive industry and technology content high, compared with the labor-intensive industry will have a better development momentum, the silicone material is mainly used in electronic appliances, medical equipment, baby products, such as a big industry, wide range, and a lot of used rubber products will be gradually replaced by silica gel.
At the same time, also want to realize now silicone rubber industry internal competition fierce, owing to the unfavourable economic situation and the corresponding monetary policy, small and medium-sized enterprise cash flow is more difficult, it is a challenge for a capital-intensive industries, but if to be able to have such an economic downturn, silicone rubber industry of tomorrow will be very good. Look from the products, the demand of silicone rubber industry is still a common gas phase adhesive, at the same time, the flame retardant plastic, low-grade rubber and liquid rubber and other special analysing demand rising, the adhesive with high content of science and technology, value added from the previous two regular glue is bigger, so all the species in the future there will be a large market space.
2014年1月19日星期日
Something about lihuachemical.com
Product Overview
Inert ceramic balls with high strength, high chemical and thermal stability properties, inert ceramic balls can be high temperature, high pressure and corrosive acid, alkali , salt and various organic solvents , inert ceramic balls are widely used in petroleum , chemical, fertilizer, natural gas and environmental protection industries. Inert ceramic balls as the catalyst in the reactor and the cover of the support material, into the buffer liquid and the gas in the reactor catalyst impact , protecting the catalyst in the reactor and improve the distribution of liquid and gas.
Inert ceramic balls with high strength, high chemical and thermal stability properties, inert ceramic balls can be high temperature, high pressure and corrosive acid, alkali , salt and various organic solvents , inert ceramic balls are widely used in petroleum , chemical, fertilizer, natural gas and environmental protection industries. Inert ceramic balls as the catalyst in the reactor and the cover of the support material, into the buffer liquid and the gas in the reactor catalyst impact , protecting the catalyst in the reactor and improve the distribution of liquid and gas.
Product features
Inert ceramic ball has high strength, high
chemical stability, thermal stability and resistance to high temperature, high
pressure and acid, alkali, salt and the characteristics of various organic
solvent corrosion.
Range of application
Inert ceramic balls are widely used in
petroleum, chemical industry, fertilizer industry, natural gas and
environmental protection and other industries.
Ammonia decomposition catalyst by the high
temperature roasting MgO style carrier, load active component Ni and other
growth substance composition, has the very high catalytic activity, high
mechanical strength, excellent heat resistance and resistance to coking
properties, is mainly used in coke oven gas purification recovery unit in
ammonia decomposition furnace, will all of NH3 and HCN in the coke oven gas and
other toxic gases into N2 and H2 and CO2, effectively solves the problem of
equipment corrosion and environment pollution in coke oven gas.
De-oxygenation catalyst takes precious metal as active component basis loading on activated alumina carrier, which is mainly used to remove oxygen from hydrogen gas, also for nitrogen, CO, CO2, Argon and inert gas.
Operation for hydrogen gas and Argon gas could be done under normal temperature while space velocity (3~10)×103 h1 and residual oxygen could be 0.2ppm. For synthesis gas, coal gas and coking dry gas, operation have to be done at temperature 110~140℃, pressure>0.1Mpa, space velocity (1~4)×103 h-1, and residual oxygen could be <1ppm
The application of vinyl resin
1,
fiberglass and liner
Vinyl resin commonly used in a high temperature
requirements , strong corrosion conditions FRP products , such as the
production of large fiberglass storage tanks, tankers , towers , pipes , fans
and so on. To be anti- corrosion steel container , concrete ducts are also
commonly used to make Vinyl resin
fiberglass liner .
Large chemical fertilizer urea granulation tower wall in the mid-1960s anti-corrosion coatings , urea crystallization on the concrete wall corrosion is very serious. 1969 Sichuan Luzhou Natural Gas Chemical Plant took the lead with epoxy fiberglass liner corrosion success. But epoxy resin viscosity, construction inconvenience , in recent years has begun to replace the epoxy Vinyl resin used for urea granulation tower wall corrosion
Large chemical fertilizer urea granulation tower wall in the mid-1960s anti-corrosion coatings , urea crystallization on the concrete wall corrosion is very serious. 1969 Sichuan Luzhou Natural Gas Chemical Plant took the lead with epoxy fiberglass liner corrosion success. But epoxy resin viscosity, construction inconvenience , in recent years has begun to replace the epoxy Vinyl resin used for urea granulation tower wall corrosion
Since Vinyl
resin has good strength, corrosion resistance and temperature resistance
, and thus it can be used to make gel coat resin , used as artificial agate ,
marble, sanitary ware and other high-end products gelcoat . Vinyl resins to
improve thixotropy and viscosity , can be added fumed carbon , together with a
small amount of polar additives such as glycerol , BYK605 and so on.
2 ,
resin cements , mortars
A Vinyl resin prepared mortar , mortar for corrosion resistant lining brick panels , paving , pointing , but also corrosion-resistant resin mortar for the whole ground. Such as Beijing Chemical Plant Engineering chlor alkali evaporation surface , the medium is sodium hydroxide, 30% concentration , the use of Vinyl resin mortar to do the whole floor , China's peaceful construction companies and other construction units on how to reduce the shrinkage of resin mortar summarizes certain aspects experience
A Vinyl resin prepared mortar , mortar for corrosion resistant lining brick panels , paving , pointing , but also corrosion-resistant resin mortar for the whole ground. Such as Beijing Chemical Plant Engineering chlor alkali evaporation surface , the medium is sodium hydroxide, 30% concentration , the use of Vinyl resin mortar to do the whole floor , China's peaceful construction companies and other construction units on how to reduce the shrinkage of resin mortar summarizes certain aspects experience
3 ,
the coating
1) light-cured coatings
Vinyl resin with benzoquinone, benzoin ethers such as the presence of a photoinitiator , by ultraviolet radiation , can lead to crosslinking and curing extremely fast, in seconds . This feature is made use of light- curable vinyl coating save energy , greatly improving production efficiency and has a good prospect
1) light-cured coatings
Vinyl resin with benzoquinone, benzoin ethers such as the presence of a photoinitiator , by ultraviolet radiation , can lead to crosslinking and curing extremely fast, in seconds . This feature is made use of light- curable vinyl coating save energy , greatly improving production efficiency and has a good prospect
2) flake paint
With a Vinyl resin and glass flake , etc. made of flake paint , can be used for equipment lined steel containers are widely used in petrochemical, metallurgy , papermaking , electroplating , chlor-alkali , medicine, food , construction and other industries, such as power plants water supply system of the desulfurization tower , sodium hydroxide , hydrochloric acid tank, etc. , exhaust system FGD precipitator , absorber , oxidation tower ; duct, chimney wall corrosion in high temperature and strength requirements of the occasion , often using flake paint and fiberglass composite structure.
With a Vinyl resin and glass flake , etc. made of flake paint , can be used for equipment lined steel containers are widely used in petrochemical, metallurgy , papermaking , electroplating , chlor-alkali , medicine, food , construction and other industries, such as power plants water supply system of the desulfurization tower , sodium hydroxide , hydrochloric acid tank, etc. , exhaust system FGD precipitator , absorber , oxidation tower ; duct, chimney wall corrosion in high temperature and strength requirements of the occasion , often using flake paint and fiberglass composite structure.
2014年1月14日星期二
What is Erythorbic Acid?
Erythorbic
Acid is a kind of stereo isomer, vitamin C and so on chemical properties
similar to vitamin C. Different ascorbic acid as a white to pale yellow or
crystal powder, odourless, has a sour taste, 166-172 ℃, melting point and decomposition,
with light gradually. Drying condition and is very stable in the air, and when
exposed to the atmosphere in aqueous solution is metamorphic rapidly, almost no
physiological activity of ascorbic acid, its oxidation resistance is better
than that of ascorbic acid, but poor heat resistance, strong reducibility,
heavy metal ions can promote the decomposition of ascorbic acid soluble in
water, room temperature solubility of 40 g / 100 ml, soluble in ethanol, 5 g /
100 ml, hardly soluble in glycerin, insoluble in benzene, 1% aqueous solution
of the PH value of 2.8.
Oxidation resistance
Erythorbic Acid, the antioxidant capacity
of far more than vitamin C, no vitamin C, but it will not hinder the body
against the bad blood acid absorption and utilization. Ingested ascorbic acid,
can be transformed into vitamin C in the body.
The us food and drug administration (1980)
will this product as a generally accepted safety material.
2 physical properties
Erythorbic
Acid is white to yellow-white
crystal granular or crystal powder, odourless, slightly salty, melting point
200 ℃ above
decomposition, exposed to the air is quite stable in dry state without becoming
dry. But in aqueous solution, when there are air, metal, heat, light,
oxidation, soluble in water, room temperature solubility is 16 g / 100 ml,
hardly soluble in ethanol, 2% aqueous solution of the PH value of 6.5 to 8.0.
About us
SINOCHEM NANJING is a
diversified large-scale group company, mainly focusing on manufacturing,
research and development of new products, and currently, its business has
expanded to the fields of Industry Chemicals, Food additives & Feed Additive, etc.
In recent years, SINOCHEM NANJING has been developing rapidly with expanding scale, improving benefits and outstanding management. The company has been awarded the certificates of ISO9001, ISO14001 and OHSAS18001 by TUV. Meanwhile, it has also been honored as the "AAA" grade enterprise within the fields of Qualification and Credit by the Shenzhen Development Bank and the Contract Abiding, "AAA" grade enterprise by the Provincial Administration for Industry and Commerce for years, as well as "AAA" grade excellent foreign trade enterprise by the Committee of the Credit System of China Foreign Trade & Economic Cooperation Enterprise. SINOCHEM NANJING has been devoting itself to offering qualified products, reliable service with competitive price and professional staffs to meet the demands of the clients.
In recent years, SINOCHEM NANJING has been developing rapidly with expanding scale, improving benefits and outstanding management. The company has been awarded the certificates of ISO9001, ISO14001 and OHSAS18001 by TUV. Meanwhile, it has also been honored as the "AAA" grade enterprise within the fields of Qualification and Credit by the Shenzhen Development Bank and the Contract Abiding, "AAA" grade enterprise by the Provincial Administration for Industry and Commerce for years, as well as "AAA" grade excellent foreign trade enterprise by the Committee of the Credit System of China Foreign Trade & Economic Cooperation Enterprise. SINOCHEM NANJING has been devoting itself to offering qualified products, reliable service with competitive price and professional staffs to meet the demands of the clients.
what is Citric Acid Anhydrous?
Citric
Acid Anhydrous , formula C6H8O7, is a colorless, translucent crystals or
white granules or white crystalline powder , often containing one molecule of
water of crystallization , odorless, very sour taste , soluble in water,
alcohol and ether. Suitable crystallization temperature control obtained
anhydrous citric acid . Acidic aqueous solution. In dry air, slight weathering
, deliquescence in moist air . Mainly for the food and beverage industry as a
sour agent , acidity regulator, flavoring agents and preservatives ,
preservative . Also the chemical industry, cosmetics industry and the industry
as a washing antioxidants, plasticizers , detergents.
Character
Colorless transparent crystals or white
particles, or white crystalline powder, often contain molecular crystal water,
odourless, taste very acid, soluble in water, alcohol and ether. The calcium
salt easy dissolve in cold water than hot water, and the properties of commonly
used to identify and separate citric acid. Crystallization in control the
temperature of the appropriate anhydrous citric acid can be obtained. Acidic
aqueous solution. Micro have to weathering in dry air, deliquescence in moist
air. More than 175 ℃ decomposition release water and carbon dioxide.
Physical and chemical properties: the
relative density 1.542, melting point 153 ℃ (water), the refractive index of 1.493 ~ 1.509, the solution
crystallization critical temperature 36.6 ℃, 36.6 ℃ above crystallization of anhydrous citric acid, crystallization of
citric acid monohydrate) below 36.6 ℃.
Use
Mainly used for food and beverage industry
as sour agent, acidity regulator, flavouring agent, preservative and
antistaling agent. Also in the chemical industry, cosmetics industry and
washing industry used as antioxidant, plasticizer and detergent
Storage
Avoid light, sealed, dry place storage
About us
SINOCHEM NANJING is a
diversified large-scale group company, mainly focusing on manufacturing,
research and development of new products, and currently, its business has
expanded to the fields of Industry Chemicals, Food additives & Feed Additive, etc.
2014年1月6日星期一
The advantage of filling hollow glass microspheres
The advantage of filling hollow glass microspheres
hollow glass microspheres as the glass filled a, also occupy a certain market share in the
market. In nowadays under the condition of all kinds of filling materials
dripping wet markets, what is the fill hollow beads in the market for a long
time and unbeaten? Let's take a look at the advantage of the hollow beads
filled, maybe you will understand.
As a spherical particle, hollow beads
filling used in the paint, paint has the following advantages:
1. The dosage of resin/add less amount of
potential: because in any shape, spherical with a minimum of specific surface
area, also have the fewest demand of resin of hollow bead filled in. The
accumulation of particles situation has been improved. Hollow beads filled the
wide particle size distribution makes the small ball is able to fill in the
space between the big microspheres. The result... In fact is: high addition
amount and high solid content, low VOC and reducing the amount of other
ingredients;
2. Low viscosity/improve liquidity: with
irregular shape particles, filling hollow beads are easy to scroll between each
other. It makes use of cenosphere system has low viscosity, good fluidity. And
the system of spraying can be also improved;
3. Hardness/wear resistance: hollow beads
filling is a kind of high strength, and hard microspheres, it can enhance the
hardness of coatings, scrubbing resistance and abrasion resistance;
4. Excellent heat insulation effect:
because of Hollow
glass microspheres filled hollow sphere structure that makes it fills
in the coating has excellent thermal insulation effect;
5. Luster control: as a kind of filler, the
role of hollow bead filled can reduce gloss, used to control, even in addition
amount under the condition of the demand is higher, they can also eliminate the
matting agent like ordinary easy to cause the increase in viscosity, and the
cost is low;
6. The inertia: hollow beads filling is
composed of inert ingredients, thus has excellent durability, corrosion
resistance, corrosion resistance and chemical resistance;
7. Opacity: hollow beads filling up the
hollow spherical slow fire and scattering light, the result is to increase the
coating of hiding power;
8. Dispersion: fill the hollow beads
scattered as mineral filler, as a result of hollow bead filled thick wall and
high compressive strength, it can bear all kinds of mixer, extruding machine
and mould machine machining process;
9. No crystalline silicon pollution: unlike
other packing, filling hollow beads in crystalline silicon content below the
level of no harm. Such cenosphere is seen as a carcinogen, also do not need
special hazard warning sign.
2013年12月9日星期一
The application of vinyl resin anticorrosion performance in the automotive industry
Epoxy
vinyl resin called anti-corrosion industry leader in many other ways also
have applications, including automobile manufacturing. According to China epoxy
resin industry association experts, vinyl ester resin can make all kinds of
vehicle components, such as car tyre has also successfully with high strength
and vinyl ester resin suppress, than metal tire weight 40 ~ 50%, from 160 ~ 200
℃
in electrical equipment can be run continuously for more than 10 years and keep
enough mechanical strength and dimensional stability. Epoxy vinyl ester resin
has higher elongation have better shear strength, the impact of the higher than
ISO polyester and good creep resistance and fatigue resistance, and good
molding liquidity in the SMC parts making cars, the obtained compelling
applications. Expert says, these components include wheel, seat, heat
dissipation frame, gate board, engine valve sleeve, etc.
According to the China epoxy resin industry association
experts introduced: sheet metal material on the total cost advantage
integration is difficult, but many parts total amount is large, is the second
placing signage at the noise, corrosion resistance is low; The appearance of
the cast aluminum products quality is better than other non-ferrous metals, but
the cost is higher, sound-absorbing, poor corrosion resistance; Thermoplastic
composite materials (mainly glass fiber reinforced nylon) of superior
machinability, short production cycle, but high temperature aging problems,
poor durability, size is not stable and cause poor sealing.
So analysis think SMC and BMC is one of the ideal material
for the valve set. Cytec Industries Inc Cyglas 695 BMC engine parts production,
is a kind of vinyl ester resin containing 25% glass fiber BMC products,
including the molding Cornette 5.7 L car cylinder valve cover, injection
moulded a 4.3 L 12 gm truck before timing gear chain cover, injection moulded a
5.7 L 3 gm truck before timing gear chain cover, 2.7 L V6DOHC cylinder valve
cover, etc.
Vinyl
ester resin BMC cylinder valve cover, working temperature of 138 ~ 149 ℃, the curing
speed (45 s curing products 3 mm thick, 1.4 ~ 1.8 kg of the valve cover, 1 min
curing), good dimensional stability, good resistance to chemical corrosion. China
Activated alumina characteristic analysis
In the petrochemical industry, fertilizer
industry , widely used as catalysts, catalyst supports . Activated alumina
adsorption characteristics and thus used as a gas and liquid desiccants ,
adsorbents gas purification , drinking water fluoride removal agent ,
industrial wastewater color and odor eliminating agents.
Can be used with household fluoride in
cylinder form a complete set, is the ideal drinking water fluoride removal
equipment in the family. The fluoride in filter material can also be used with
the waterworks fluoride removal equipment or industrial fluoride removal
equipment systems. Household fluoride removal equipment fluoride in liao
activation: configuration of aluminium sulfate solution (3 litres of water, 0.3
kg of solid aluminum sulfate), alumina fluoride in filter material to be
included in the above solution, soak 5-10 hours abandon to immersion to appropriate
mixing (soaked), then wash with clear water for 3 to 5 times, each time 2
liters of water, or mixed with PH reclamation, control the PH 7.5. Activated
alumina fluoride in filter material can use 6 to 8 years in a row, when
surface tan, fluoride in effect is significantly reduced, this is due to the
water pollution of impurities, so it's best to every half an year is treated
with dilute hydrochloric acid 3%, its operating method and the regeneration
method is the same.
The main factors influencing the activated
alumina fluoride agent is
Today mainly for everyone say affect
activated alumina fluoride agent adsorption performance what element? . Activated alumina fluoride in
a multiple porous spherical material, can have very strong adsorption function,
large specific surface area, high compressive strength hardness, long service
life, and can be used repeatedly through regeneration methods. This product is
a white, spherical porous material non-toxic, odourless, not powder, insoluble
in water. Widely used in petrochemical, chemical, textile, metallurgical and
other industries of instrument air drying, can also be used for the iron and
steel, petroleum cracking gas, PVC, propylene in the liquid phase and gas phase
depth is dry. Understand the factors affecting activated alumina fluoride agent
adsorption performance, to avoid the disadvantage factors, make active aluminum
oxide better work.
(1) particle size: the smaller the particle
size, the higher adsorption capacity, but the smaller the particle size,
particle strength is lower, affect the service life.
2 raw water PH value: when the PH value is
greater than 5, the lower the PH, the higher the adsorption capacity of
activated alumina fluoride agent.
(3) initial fluoride concentration in the
raw water, the higher the initial concentration of fluorine, adsorption
capacity is bigger.
(4) raw water alkalinity: heavy
concentration of carbonate ions in raw water, high adsorption capacity will
reduce.
(4) the chloride ion and sulfate ion.
（5） the effects of arsenic: activated
alumina fluoride adsorption for the arsenic in the water, the accumulation of
arsenic in activated alumina fluoride agent on the falling of fluorine ion
adsorption capacity, and make renewable elution arsenic ion more difficult.
2013年11月8日星期五
4A molecular sieve
4A
molecular sieve is an alkali metal aluminosilicate , can adsorb water ,
NH3, H2S, sulfur dioxide, carbon dioxide , C2H5OH, C2H6, C2H4 and other
critical molecular diameter less than 4A . Widely used in gas and liquid drying
, can also be used in certain gas or liquid purification and purification ,
such as argon gas from the system.
Molecular sieve is a kind of synthetic with
micro groove cubic lattice sialic acid salts. According to the internal cavity
of the crystal size and adsorption or reject molecules of different material,
thus is called "molecular sieve". Molecular diameter less than the
material can enter the molecular sieve of molecular sieve pores diameter
crystal crystal, thus by adsorption, otherwise, the rejection. Molecular sieves
are determined according to the different material molecular polarity of
priority in the order of the adsorption.
According to the molecular adsorption
effect on the choice of the size and shape of the different, namely only those
smaller than the molecular sieve adsorption aperture molecules. For small polar
molecules and unsaturated molecules, has selective adsorption performance, the
larger the polarity, not the higher the degree of saturation, the choice and
the stronger adsorption. Type A molecular sieve is A kind of molecular sieves
which, its structure and NaCl are similar, belong to the cubic crystal system.
Due to the 4 a molecular sieve effective aperture of 0.4 nm, so called 4 a
molecular sieve, the space network structure by the silicon oxygen tetrahedron
element [SiO4] and alumina tetrahedron unit [AlO4] staggered.
Application
1. Polyester additives agent: the role of 4
a zeolite as detergent additives mainly calcium ion exchange the water
softening water, remove dirt and prevent dirt deposition. 4 a molecular sieve
is most used in the generation of phosphorus to help lotion and apply the most
sophisticated products. 4 a molecular sieve to replace sodium tripolyphosphate
as detergent builder to solve the pollution of the environment has a major
role. 4 a molecular sieves also can be used as a soap abrasive molding agent,
toothpaste, etc.
2. Environmental protection, sewage
treatment, 4 a molecular
sieves can remove the NH3 - N in the sewage and Pb2 +, Cu2 +, Zn2 +, and
Cd2 +, etc. Industry and agriculture, civil, and aquatic animal husbandry in
the discharge of wastewater containing ammonia nitrogen, not only harm fish
such as survival, pollution in aquaculture environment, and promote the growth
of algae, and lead to the blocking of rivers and lakes. Due to the 4 a
molecular sieve of NH4 + high commutativity choice, has been successfully
applied in the field. From metal mining, smelting, metal surface treatment and
effluent from chemical industry and other departments, containing heavy metal
ion great harm to human body. Deal with the sewage with 4 a molecular sieves in
addition to guarantee water quality qualified, can also recycle heavy metal.
3. The other purposes:
(1) water treatment - hard water softener,
can replace the current widespread use of sulfonated coal in our country, thus
reducing costs;
(2) the metallurgical industry - separating
agent, separation, extraction from brine potassium, rubidium, cesium, etc. In
industry for enrichment, separation and extraction process;
(3) the petrochemical industry, catalyst,
desiccant, adsorbent;
(4) agriculture - soil conditioner;
(5) the medicine - silver zeolite
antimicrobial agent.
About us
SILICA GEL supplier----Fenglong Chemical
Co., Ltd. is primarily engaged in manufacturing silica gel since 2001. Our
silica gel manufacturing plant is located in Maanshan with manufacturing
capacity of more than 500-MT silica gel per year. We are manufacturing
Indicating silica gel & Non-Indicating type of SILICA GEL in all grades
such as blue silica gel, orange silica gel and basic silica gel such as type A
silica gel , type B silica gel ,type C silica gel and another special
silica gel Column chromatography silica gel . We are Chinese manufacturer of
silica gel and supplying it across the world. Silica gel manufactured by us is
of best quality which is widely used as cat litter, dessicant silica gel in
anti-rusting and moisture-proof of product, packaging, drying and separation of
gases, the catalyst carrier of petrochemical industry and so on.
Factors influencing the biochemical degradation of LAS
Factors influencing the biochemical
degradation of LAS
Physical and Chemical Properties
Appearance under normal temperature as
milky, liquid material; when it is warmed, it becomes transparent liquid.
Soluble in water while insoluble in chloroform. Air bubbles would be generated
when in water, which is of such functions as dispersing, decontamination and
reducing surface tension, etc. It is easy to form stratified layer after long
storage time while the chemical properties do not change, so it is better to
use after thorough stirring.
The temperature
Microbial growth need to be in the right
temperature, only in the appropriate temperature, the degradation rate of LAS
was biggest. Optimum growth and microorganism decomposition temperature at
30 ℃, and its
activity in a certain temperature range varies with temperature
Increased. Studies have shown that at 20 ℃, linear alkyl benzene sulfonate
(LAS) degradation in the aquatic system speed is (1.5 ~ 3.5 ℃) 20 times. Chemical reaction rate
is affected by temperature. So the temperature can affect LAS biochemical
degradation.
PH
In general, the pH of water, microbial
activity has a direct impact. Suitable pH range of different microorganisms.
Degradation of LAS microorganisms such as bacteria, actinomyces, pH change will
cause the change of cell charge, at the same time will affect the activity of
enzyme in cells. However, for a river, the influence of pH value on the LAS is
not very obvious.
The initial concentration of LAS
Pollutant itself to microbes, generally
speaking, there are certain toxicity, and the toxicity increased with the
increase of pollutants concentration increased. Studies show that when the
concentration of LAS > 10 mg/L, the inhibition of its degradation is
obvious. And studies have shown that LAS can affect aerobic degradation of
organic matter in PH self-adjusting ability. When the initial concentration of
LAS is greater than 20, then stop the aerobic degradation of organic matter in
the PH of self-adjusting ability, reduce microbial activity.
Effect of dissolved oxygen
Most of the LAS aerobic degradation is mainly to increase the dissolved oxygen concentration , can significantly increase the degradation of LAS . Aerobic biodegradation of LAS mainly contains three kinds of mechanism: ( 1 ) by ω- oxidation of the terminal methyl group on the alkyl chain by oxidation of β or α- oxidation of long- chain molecules that form short -chain sulfonic disconnect benzene carboxylic acid ; ( 2 ) oxidation of the benzene ring to open crack action ; ( 3 ) de- substituted sulfonic acid salt removed by this process . However, these three mechanisms on the role of sequence researchers have not yet reached consensus view . Studies have shown LAS can be degraded under anaerobic conditions .
Most of the LAS aerobic degradation is mainly to increase the dissolved oxygen concentration , can significantly increase the degradation of LAS . Aerobic biodegradation of LAS mainly contains three kinds of mechanism: ( 1 ) by ω- oxidation of the terminal methyl group on the alkyl chain by oxidation of β or α- oxidation of long- chain molecules that form short -chain sulfonic disconnect benzene carboxylic acid ; ( 2 ) oxidation of the benzene ring to open crack action ; ( 3 ) de- substituted sulfonic acid salt removed by this process . However, these three mechanisms on the role of sequence researchers have not yet reached consensus view . Studies have shown LAS can be degraded under anaerobic conditions .
Other effects of coexisting substances
Biodegradation of LAS will be affected by the presence of other pollutants , when the water there are other biodegradable organic pollutants , will produce inhibition of microbial degradation of LAS or catalytic role in some of the water -binding makes the LAS chemically changed thus changing the biochemical degradation of LAS . LAS primary pollutants into the water after the other pollutants combine to form with a certain degree of dispersion of colloidal particles of industrial wastewater and domestic wastewater physicochemical and biochemical characteristics has a significant impact , and produce potentially dangerous.
Biodegradation of LAS will be affected by the presence of other pollutants , when the water there are other biodegradable organic pollutants , will produce inhibition of microbial degradation of LAS or catalytic role in some of the water -binding makes the LAS chemically changed thus changing the biochemical degradation of LAS . LAS primary pollutants into the water after the other pollutants combine to form with a certain degree of dispersion of colloidal particles of industrial wastewater and domestic wastewater physicochemical and biochemical characteristics has a significant impact , and produce potentially dangerous.
2013年10月28日星期一
Protection of hydrazine hydrate
Protection of hydrazine hydrate
Hydrazine hydrate is a very important
chemical raw material in our daily life, in all fields has its shadow, in
thermal power plant are anti-corrosion additives, also azo initiator, in
agricultural chemical products and pharmaceutical products is also an important
part. In industrial production is also have a lot of application.
In fact, in the pharmaceutical industry, hydrazine hydrate
is a critical part of the production of various kinds of drugs, which is
usually drug toxicity is we all said. Also often see in the consumer goods industry,
it is also a kind of foaming agent. As well as our agrochemical industry. Urea
is generated in the process of hydrazine hydrate. Hydrazine hydrate or rocket
fuel and the formulation of the product. So hydrazine hydrate when can't get
effective control is very damaging. If in the process of production have a
large number of hydrazine hydrate leak what to do.
The first thing to do is to evacuate
leakage pollution area personnel to safe areas, no irrelevant personnel enter
the contaminated area, suggested that the emergency response personnel wear
self-contained breathing apparatus, wear chemical protective clothing. Don't
direct contact with the leakage, plugging in ensuring safety situation. Spray
water, reduce evaporation. It incombustible adsorbent with sand or absorbed,
and then collected to disposal of waste disposal places. You can also use a lot
of water to rinse, diluting the wash water into wastewater system. Such as a
large number of leakage, use of cofferdam asylum, and then collect, transfer,
recycling and harmless treatment after the waste.
The harm of hydrazine hydrate is very big;
if not timely processing waste pollution is extremely serious leakage. Waste
liquid chlorine dioxide foam separation process and hydrazine hydrate by
chlorine dioxide foam separation device, chlorine dioxide foam separation was
studied in hydrazine hydrate class waste liquid treatment effect. Through the
experiment focuses on the waste water pH, chlorine dioxide dosing quantity and
reaction time on the influence of parameters on the effect of wastewater
treatment. The optimum reaction conditions (i.e. pH value of 10, chlorine
dioxide in waste water per liter dosing quantity is 5 mg / 1000 COD, the
reaction time is 3 h) under the reaction, the original liquid waste (COD value
of 30000-30000 mg/L, total ammonia nitrogen is 2500 ~ 2700 mg/L) after
processing the COD removal rate reached 99%, ammonia nitrogen removal rate
reached more than 96%.
If direct contact with hydrazine hydrate to
clothing, immediately remove contaminated clothing and thoroughly rinse
immediately with flowing water.
If contact with eyes, immediately filed a
eyelid, with flowing water or saline flush at least 15 minutes. And then go to
the hospital quickly.
If you accidentally splashed into his
mouth, the most effective is to drink milk, or eat an egg, and then hurried to
the hospital.
If accidentally breathe hydrazine hydrate
please quickly from the scene to fresh air. Breathing difficulties to oxygen.
Breathing stops, artificial respiration and then immediately go to hospital to
check.
About
us
TongJiu Hydrazine
Hydrate Industry Co., Ltd was found in 2002, Located at Xinhua West Road NanJing City , China
Our company now is a new private stock
manufacturing & researching enterprise. Relying on the excellent company's
culture, experienced management team, experienced technical team and complete
inspection facilities, Tongjiu mainly specializes in the production and
research & development of auxiliary agents for oil field, including
1H-1,2,4-Triazole, Hydrazine Hydrate,O-chlorbenzyl chloride and so on. The
production capacity of Aminoguanidine bicarbonate is 15000 mts per year, and
sodium hormate is 25000 mts per year.and 2-Cyano-4-Nitro-6-Bromoaniline
18000mts per year.
The application of silica gel desiccant in the electronics industry
The application of silica gel desiccant in
the electronics industry
Silica
gel desiccant is very important in many industrial fields and general an
operation. Dry material often due to the following one or more of the following
reasons: to make good material flow, easy handling, storage, easy to save and
reduce transportation cost, achieve desired product quality, etc. Need the variety
of drying, they need the drying time of each different, each have different
physical shape and quality requirements, improper drying can lead to poor
product quality, product sale, cause irreparable damage.
In the electronic equipment has become so
necessary in modern life, silica gel desiccant play to the role of the
increasingly powerful, especially in small portable devices, such as pagers and
mobile phones, once some of the most complex and most vulnerable to the
environmental impact of any element equipment is affected, will not only bring
pecuniary loss, may also affect the work and life. Compared with the
replacement cost of these products, desiccant is a convenient and cheap
alternative.
Under normal circumstances, there is an
obvious example, such as camcorders, it can not run when there is no other explanation;
desiccant may help you solve the problem, good as new!
Silica gel desiccant technology innovation
refers to the at least one or more attributes can be instead of the original
product, operation, or method: hadn't invented the manufacture, product or
method; Have a higher productivity than the existing technology; More feasible
quality or better quality control, the effect is better; Reduce equipment
occupies the environment space; Operation more secure; More efficient; The
total cost is reduced. New technology can be established a new type of
products, such as: microwave drying, dielectric drying, etc. Can also be used
to is a modest improvement on existing products, process, such as: jet impact
dry, dry cyclone, etc.; and the major improvement of the existing technology,
such as: organic superheated steam drying, desiccant, etc.
Silica
gel desiccant the dry principle is based on the dry material and absorbs
moisture of the solid in direct contact with the wet copy of transfer between
the two. The dry form contains two kinds of drying technology. A is a typical
dry contact: wet here of the evaporation only at the cost of solid surface heat
transfer of heat. The second is the adsorption drying: wet here of the
transmission is driven by a mass concentration gradient. Especially suitable
for the needs of small, portable, or relative shortage of power users, is a
kind of very promising drying technology, which can be widely used in chemical
industry, food, medicine, and textile, biological and other industries.
About
us
SILICA GEL
supplier----Fenglong Chemical Co., Ltd. is primarily engaged in
manufacturing silica gel since 2001. Our silica gel manufacturing plant is
located in Maanshan with manufacturing capacity of more than 500-MT silica gel
per year. We are manufacturing Indicating silica gel & Non-Indicating type
of SILICA GEL in all grades such as blue silica gel, orange silica gel and
basic silica gel such as type A silica gel , type B silica gel ,type C silica
gel and another special silica gel Column chromatography silica gel . We are
Chinese manufacturer of silica gel and supplying it across the world. Silica
gel manufactured by us is of best quality which is widely used as cat litter, desiccant
silica gel in anti-rusting and moisture-proof of product, packaging, drying and
separation of gases, the catalyst carrier of petrochemical industry and so on.
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