News Details
Phosphorus nitrogen flame retardants for polyurethane elastomer
2017-11-23 11:05:12
Phosphorus nitrogen flame retardants for polyurethane elastomer
Brominated flame retardants are one of the most effective flame retardants for many daily necessities and industrial products. They are one of the largest flame retardants in the world. But brominated flame retardants release irritating and corrosive gases as well as a large amount of smoke during combustion, and have been banned in recent years. The polyurethane elastomer has been developed with phosphorus nitrogen flame retardants.
There are two kinds of phosphorus nitrogen flame retardants for polyurethane elastomer, which are mixed and simple. They consist of acid source (dehydrating agent), carbon source (carbon forming agent) and gas source (foaming agent). In the combustion process, the foam carbon layer is formed on the surface of the material, so as to heat insulation, oxygen separation, smoke suppression, and to prevent the droplet melting and ending chain reaction of the synthetic material, and the flame retardant function and development prospect of the phosphorus nitrogen flame retardant for the polyurethane elastomer.
Flame retardant, attenuation and smoke suppression capacity of phosphorus nitrogen flame retardant for polyurethane elastomer. Most of the natural polymer materials and organic synthetic polymers are flammable and combustible. Flame retardants are used to prevent these materials from being ignited and to inhibit flame propagation. Materials containing flame retardants are more difficult to ignite and inhibit flame propagation, thus preventing fire.
Fire retardants should minimize the amount of toxic and corrosive gases and smoke produced during thermal decomposition and combustion of materials. They are often the first and most dangerous factors in fires. The majority of deaths in fires are caused by toxic gases and smoking. Therefore, flame retardant and reduce toxicity, smoke suppression in the same breath. By flame retardant materials, the rate of flame propagation and heat release is greatly reduced, which can effectively reduce the fire environment temperature and the speed of fire propagation, and reduce the amount of toxic gas and smoke generated in the fire scene.
The safety evaluation of flame retardants includes the acute toxicity, carcinogenicity, mutagenicity and irritation of the flame retardants themselves, and the toxic gases and smoke produced during combustion.
Flame retardant is divided into three types: adding type, reactive type and finishing type. Add type is in a physical form dispersed in a matrix, used for thermoplastic polymers, such as flame retardant and synthetic fiber spinning solution mixing and spinning; reaction type is used as a monomer of polymer, participate in copolymerization, and finally become a monomer molecular structure of polymers, used for thermosetting polymers; finishing is the flame retardant finishing in fiber or fabric.
Triphenyl Phosphate (TPP)
The product output : 100 tons / month
Shipping Port: China Shanghai
Price offer is valid : 15 days
Export rights: the right to import and export company .
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
The largest users of flame retardants are plastic products, accounting for about 80%. In addition, textiles account for about 5%, and coatings account for about 3%.
Flame retardant textiles are generally used for wearing, decorating and industrial fabrics. To wear work clothes, fire fighting clothing, uniforms, shirts, pajamas, children and adults; decorative fabrics including aircraft, train, car and ship seat fabric, and the EMU and the high iron seats and carpets and other textile products, decorative fabrics with hotels, high-rise buildings and public places, home textiles such as curtains, curtain, table cloth, mattress (single), carpet, wall cloth, sofa sets; industrial fabrics for toys, tents etc..
The world's flame retardant dosage is 1500~1600 tons. The amount of inorganic flame retardants in the United States and Europe accounted for 50%~55% and 40%~45% of the total amount, 30% in Japan and 15% in other parts of asia. The proportion of halogenated flame retardants in the United States is about 20%, Europe is less than 20%, Japan is about 30%, and other parts of Asia is about 50%.
At present, China's annual output of flame retardant is about 130~160 tons, with an average annual growth rate of 15%~20%, higher than the world average growth rate of 3%~4% level. Moreover, the ratio of halogen and halogen phosphorus flame retardants is too high, up to about 70%. Among them, brominated flame retardants accounted for about 37%, chlorine series accounted for about 6%, halogen phosphorus series accounted for about 25%. As a flame retardant, such as aluminum hydroxide, magnesium hydroxide, zinc borate and other inorganic compounds, the amount is very low, accounting for about 8%.
With flame retardant effect of boron and aluminum elements: A III, suitable for inorganic compounds in non durable flame retardant and organic boron based flame retardant; IV group B and group V B titanium and zirconium niobium and their compounds are suitable for wool fabric flame retardant; group V A nitrogen and phosphorus, antimony and VII A family is the main element of halogen flame retardant, which is suitable for nitrogen and phosphorus flame retardant cellulose fiber, halogen and antimony is suitable for flame retardant synthetic fiber.
The main advantages of brominated flame retardants are flame retardant and high efficiency, little impact on the performance of the matrix, good price, high thermal stability, mostly in the decomposition temperature of 300 DEG C; excellent hydrolytic stability, adequate sources of raw materials, mature manufacturing process, moderate price; applicable to a variety of plastics, rubber, synthetic fiber and coating. About 70% of the flame retardants used in global electronic and electrical products are still brominated flame retardants. They are the mainstream of flame retardants used in synthetic and plastic products.
Brominated flame retardants release hydrogen gas with irritant and corrosive properties when burning, especially when used in conjunction with antimony oxide, combustion will release a large number of flue gas, which poses a serious threat to the safety of life.
Especially the unknown substances produced two polybrominated diphenyl ether during combustion, found to contain carcinogens of polybrominated dibenzo two dioxane and four polybrominated dibenzo furan, the potential harm to the environment and human health.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Brominated flame retardants are one of the most effective flame retardants for many daily necessities and industrial products. They are one of the largest flame retardants in the world. But brominated flame retardants release irritating and corrosive gases as well as a large amount of smoke during combustion, and have been banned in recent years. The polyurethane elastomer has been developed with phosphorus nitrogen flame retardants.
There are two kinds of phosphorus nitrogen flame retardants for polyurethane elastomer, which are mixed and simple. They consist of acid source (dehydrating agent), carbon source (carbon forming agent) and gas source (foaming agent). In the combustion process, the foam carbon layer is formed on the surface of the material, so as to heat insulation, oxygen separation, smoke suppression, and to prevent the droplet melting and ending chain reaction of the synthetic material, and the flame retardant function and development prospect of the phosphorus nitrogen flame retardant for the polyurethane elastomer.
Flame retardant, attenuation and smoke suppression capacity of phosphorus nitrogen flame retardant for polyurethane elastomer. Most of the natural polymer materials and organic synthetic polymers are flammable and combustible. Flame retardants are used to prevent these materials from being ignited and to inhibit flame propagation. Materials containing flame retardants are more difficult to ignite and inhibit flame propagation, thus preventing fire.
Fire retardants should minimize the amount of toxic and corrosive gases and smoke produced during thermal decomposition and combustion of materials. They are often the first and most dangerous factors in fires. The majority of deaths in fires are caused by toxic gases and smoking. Therefore, flame retardant and reduce toxicity, smoke suppression in the same breath. By flame retardant materials, the rate of flame propagation and heat release is greatly reduced, which can effectively reduce the fire environment temperature and the speed of fire propagation, and reduce the amount of toxic gas and smoke generated in the fire scene.
The safety evaluation of flame retardants includes the acute toxicity, carcinogenicity, mutagenicity and irritation of the flame retardants themselves, and the toxic gases and smoke produced during combustion.
Flame retardant is divided into three types: adding type, reactive type and finishing type. Add type is in a physical form dispersed in a matrix, used for thermoplastic polymers, such as flame retardant and synthetic fiber spinning solution mixing and spinning; reaction type is used as a monomer of polymer, participate in copolymerization, and finally become a monomer molecular structure of polymers, used for thermosetting polymers; finishing is the flame retardant finishing in fiber or fabric.
Triphenyl Phosphate (TPP)
The product output : 100 tons / month
Shipping Port: China Shanghai
Price offer is valid : 15 days
Export rights: the right to import and export company .
Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.
Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.
The largest users of flame retardants are plastic products, accounting for about 80%. In addition, textiles account for about 5%, and coatings account for about 3%.
Flame retardant textiles are generally used for wearing, decorating and industrial fabrics. To wear work clothes, fire fighting clothing, uniforms, shirts, pajamas, children and adults; decorative fabrics including aircraft, train, car and ship seat fabric, and the EMU and the high iron seats and carpets and other textile products, decorative fabrics with hotels, high-rise buildings and public places, home textiles such as curtains, curtain, table cloth, mattress (single), carpet, wall cloth, sofa sets; industrial fabrics for toys, tents etc..
The world's flame retardant dosage is 1500~1600 tons. The amount of inorganic flame retardants in the United States and Europe accounted for 50%~55% and 40%~45% of the total amount, 30% in Japan and 15% in other parts of asia. The proportion of halogenated flame retardants in the United States is about 20%, Europe is less than 20%, Japan is about 30%, and other parts of Asia is about 50%.
At present, China's annual output of flame retardant is about 130~160 tons, with an average annual growth rate of 15%~20%, higher than the world average growth rate of 3%~4% level. Moreover, the ratio of halogen and halogen phosphorus flame retardants is too high, up to about 70%. Among them, brominated flame retardants accounted for about 37%, chlorine series accounted for about 6%, halogen phosphorus series accounted for about 25%. As a flame retardant, such as aluminum hydroxide, magnesium hydroxide, zinc borate and other inorganic compounds, the amount is very low, accounting for about 8%.
With flame retardant effect of boron and aluminum elements: A III, suitable for inorganic compounds in non durable flame retardant and organic boron based flame retardant; IV group B and group V B titanium and zirconium niobium and their compounds are suitable for wool fabric flame retardant; group V A nitrogen and phosphorus, antimony and VII A family is the main element of halogen flame retardant, which is suitable for nitrogen and phosphorus flame retardant cellulose fiber, halogen and antimony is suitable for flame retardant synthetic fiber.
The main advantages of brominated flame retardants are flame retardant and high efficiency, little impact on the performance of the matrix, good price, high thermal stability, mostly in the decomposition temperature of 300 DEG C; excellent hydrolytic stability, adequate sources of raw materials, mature manufacturing process, moderate price; applicable to a variety of plastics, rubber, synthetic fiber and coating. About 70% of the flame retardants used in global electronic and electrical products are still brominated flame retardants. They are the mainstream of flame retardants used in synthetic and plastic products.
Brominated flame retardants release hydrogen gas with irritant and corrosive properties when burning, especially when used in conjunction with antimony oxide, combustion will release a large number of flue gas, which poses a serious threat to the safety of life.
Especially the unknown substances produced two polybrominated diphenyl ether during combustion, found to contain carcinogens of polybrominated dibenzo two dioxane and four polybrominated dibenzo furan, the potential harm to the environment and human health.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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