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 epoxy resin industry association experts say the future, this kind of material to a wide range of applications in the field of transportation, mainly lies in the spare parts, including wheel, seat, heat dissipation frame, gate board, engine valve sleeve, etc

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.

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 .

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.

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 10#, NanJing City, China, mainly producing hydrazine hydrate. Our company occupies an area of 50000 square metres with fixed assets of RMB 10million.

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.

vinyl resin comprehensive analysis

vinyl  resin

Vinegar chloride copolymer resins of vinyl chloride resin solubility than the coating can be formulated solvent-based coatings , resin plasticizers , coating with good flexibility and adhesion , weather resistance superior to vinyl chloride resin paint , and over- protective properties chloride equivalent chlorine acetic acid resin can be used as chemical corrosion coatings, resistance to atmospheric corrosion, salt spray, moisture or underwater hull corrosion coatings, such paint primer, paint and varnish should be applied to 2 ~ 3 , two recoat time is about 24h, phosphate primer , phosphate primer with polyvinyl butyral , basic zinc chromate pigment , phosphoric acid and alkyd solvent.

The paint suitable for thin coating , to improve coating adhesion , the film forming process, respectively, on the ground before the phosphorylation of phosphate conversion , chromate and resin cross linking in reflection , followed by coating on the ground greatly improved Individually material adhesion and some rust resistance , so called primed for micro stainless steel surface , coating it with phosphoric acid dissolution and transformation of the role it is also known as wash primer paint in non-ferrous metal substrate surface coating adhesion is poor , it is often used to improve the etch primer large low adhesion, phosphate primer construction, generally thin coating , but otherwise have a negative impact on the adhesion , Chlorinated polypropylene coatings, chlorinated polypropylene resin is mainly used to produce plastic film with printing ink , with thermoplastic polyolefin , plastic mass production and high product requirements Dan painting landscaping, and coating adhesion and poor, the development of targeted plastics primer, chlorinated polypropylene plastic primer paint solution of polyvinyl alcohol resin , the surface of the plastic film of about 3mm , similar to the binding force of surfactant to improve the coating thickness suitable for coating, it must not contain fillers , otherwise it will affect the adsorption film formation time , the high chloride resin is synthesized using a specific process .

Swelling polyethylene plus dispersant aqueous suspension is formed , under pressure at a certain common chlorine chloride , after deacidification , perchlorethylene paint washing, neutralization, remove alkali , washed with water, dried to form up to 65% chlorine more than two white powder, but the chlorine atoms in the molecule beam irregularly distributed , not as crystalline as perchlorethylene , it is easy to be dissolved , so it has good workability , to protection and perchlorethylene quite as protective coatings, alternative paint vinyl chloride , chlorinated rubber paint, green, yellow polyethylene paint.

About us

YangGuang Resin Co.,Ltd. is one of the world's leading producers and suppliers of vinyl resin and its chemicals. YangGuang Resin is dedicated to providing highly specialized vinyl resin that meet exacting customer requirements. YangGuang Resin’s materials serve in the field of producing pharmaceutical packaging aluminum foil, aluminum foil varnish, anodized aluminum, coatings, magnetic card material, thermal insulation materials, floor, carpet, plastic inks, ink for high temperature cooking, aluminum foil printing ink, leather surface treatment, PU color ointment, plastic paint, toy paint, UV paint, Wood, ranked nail glue, shoe adhesives, interlayer adhesive, adhesive for carbon ribbon and magnetic tape manufacturers. Whether you need what kind of vinyl resin, YangGuang Resin can fulfill your needs.Our major products include UMOH resin, UMCH resin, UM 55, UM 50 , vinyl resin CK.

Our Products can well replace the Dow Reisn series products such as vagh resin, vmch resin, VYNS-3 resin with high performace and low price. Details about our vinyl resin and chemicals , you can go directly to the product you wish to explore. Pictures and technical specifications are included.

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