News Details
Halogen containing halogenated polymers flame retardant
2017-11-24 15:24:01
Halogen containing halogenated polymers flame retardant
Nearly 80% of the modified flame retardants used in plastics are halogen containing flame retardants, and the halogenated polymers containing halogenated flame retardants are represented by polybrominated diphenyl ethers (PBDEs), two phenyl ethers and polybrominated diphenyl ethers (PBDEs).
The brominated flame retardants in poly (halogenated plastics) containing halogen flame retardants have high efficiency, low dosage, little influence on the properties of the brominated flame retardants, and the brominated flame retardants are moderately priced. Compared with other halogenated halogenated polymer flame retardants, brominated flame retardants have better performance / price ratio.
However, in recent years, some EU countries think that the combustion of brominated flame retardants will produce toxic carcinogenic polybrominated benzoxadiazol Ying (PBDD) and polybrominated dibenzofuran (PBDF) two. The European Union has issued a ban on all electronic and electrical equipment sold in EU countries that cannot contain polybrominated diphenyl ethers and polybrominated diphenyl ethers (two phenyl ethers).
At present, more and more people pay attention to the development of environmental friendly flame retardants. At the same time, people's demand for fire safety and flame retardant products is also getting higher and higher. Halogen free, low smoke, low toxic environment-friendly flame retardant has become the goal of people.
The flame retardant decomposes into non volatile protective film. The flame retardant decomposes at the burning temperature of the plastic, and the decomposition product forms a non volatile protective film covering the surface, so as to cut off the air and prevent the combustion.
Flame retardant decomposition products of active free radical chain reaction to cut off the chain reaction of active radicals can make flame retardant continues, decomposition products will cut off the activity of free radical chain reaction, so as to effectively prevent the flame burning.
The dispersion of combustion heat and dilution of combustible substance is one of the ways to realize flame retardancy. Because the heat of combustion is absorbed largely, the temperature of the plastics is reduced, and the decomposition, evaporation and combustion are slowed down. On the other hand, the flame retardant system of plastics can decompose and produce non combustible gas, thus diluting the combustible gas and achieving the purpose of flame retardant.
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 oxygen separation of heavier gas or high boiling liquid. The water absorbed in the reaction absorbs a large amount of heat, reduces the surface temperature of fuel, and is gasified into steam. A protective film is formed on the surface of combustible material, so as to realize flame retardant.
The process of plastic burning can believe that: in the air, due to external heat or fire the plastic is heated, and eventually led to the degradation of the volatile products, flammable products and energy products, the external heat source to reach a certain temperature under the action of plastic will burn up. The plastic part of the combustion heat by conduction, radiation and convection of biodegradable plastic is being absorbed, more volatile flammable products; on the other hand, in the process of combustion, the flame of the air surrounding the intense disturbance, increase the combustible volatiles and air mixing speed, making the combustion more violent.
Polyolefin plastics containing halogen flame-retardant mechanism of flame retardant is a kind of can prevent and reduce the burning rate of combustion or improve the ignition point of a substance.
The dehydration of the decomposition products of the flame retardant causes the carbonization of the organic matter to prevent the combustion of the burning plastic from decomposition combustion, while the ordinary carbon does not produce the evaporation combustion and decomposition combustion of the flame. Therefore, if the thermal decomposition of the material can be carried out rapidly without burning at the flammable material stage and decomposed into carbon, the combustion can be prevented.
The quality of eight bromine ether is basically the same as that of foreign countries, but attention should be paid to improving the shape of the product. The thermal stability of six bromo twelve alkane affects its application in the processing of flame retardant products. The heat resistant type six bromine ring twelve alkane can keep the structure in the general polymer processing temperature, and once it is burned, it will not produce too much smoke.
Brominated flame retardants are still the main force in the worldwide flame retardant technology. At present, the bias of brominated flame retardants will follow the further development of science, and it will still be used in 20 years. Our evaluation is: we hate it, but we can't do without it.
Because of the environmental problems caused by halogen compounds, the research on flame retardants gradually transferred to halogen free compounds. Halogen free phosphorus containing flame retardants have aroused people's interest. The halogen phosphorus flame retardant has the following changes when it is burning: phosphorus compounds, phosphoric acid, phosphoric acid and poly phosphoric acid. Polymetaphosphate vitreous body covered on the burning surface, forming a protective film, can be separated as oxygen, flame retardant effect; in addition, phosphate and polymetaphosphate are strong, have very strong dehydration, dehydration and carbonization can make the polymer, carbonized layer formed on the surface of isolating oxygen and heat transfer to polymer therefore, no halogen and phosphorus containing flame retardant has good flame retardant effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Nearly 80% of the modified flame retardants used in plastics are halogen containing flame retardants, and the halogenated polymers containing halogenated flame retardants are represented by polybrominated diphenyl ethers (PBDEs), two phenyl ethers and polybrominated diphenyl ethers (PBDEs).
The brominated flame retardants in poly (halogenated plastics) containing halogen flame retardants have high efficiency, low dosage, little influence on the properties of the brominated flame retardants, and the brominated flame retardants are moderately priced. Compared with other halogenated halogenated polymer flame retardants, brominated flame retardants have better performance / price ratio.
However, in recent years, some EU countries think that the combustion of brominated flame retardants will produce toxic carcinogenic polybrominated benzoxadiazol Ying (PBDD) and polybrominated dibenzofuran (PBDF) two. The European Union has issued a ban on all electronic and electrical equipment sold in EU countries that cannot contain polybrominated diphenyl ethers and polybrominated diphenyl ethers (two phenyl ethers).
At present, more and more people pay attention to the development of environmental friendly flame retardants. At the same time, people's demand for fire safety and flame retardant products is also getting higher and higher. Halogen free, low smoke, low toxic environment-friendly flame retardant has become the goal of people.
The flame retardant decomposes into non volatile protective film. The flame retardant decomposes at the burning temperature of the plastic, and the decomposition product forms a non volatile protective film covering the surface, so as to cut off the air and prevent the combustion.
Flame retardant decomposition products of active free radical chain reaction to cut off the chain reaction of active radicals can make flame retardant continues, decomposition products will cut off the activity of free radical chain reaction, so as to effectively prevent the flame burning.
The dispersion of combustion heat and dilution of combustible substance is one of the ways to realize flame retardancy. Because the heat of combustion is absorbed largely, the temperature of the plastics is reduced, and the decomposition, evaporation and combustion are slowed down. On the other hand, the flame retardant system of plastics can decompose and produce non combustible gas, thus diluting the combustible gas and achieving the purpose of flame retardant.
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 oxygen separation of heavier gas or high boiling liquid. The water absorbed in the reaction absorbs a large amount of heat, reduces the surface temperature of fuel, and is gasified into steam. A protective film is formed on the surface of combustible material, so as to realize flame retardant.
The process of plastic burning can believe that: in the air, due to external heat or fire the plastic is heated, and eventually led to the degradation of the volatile products, flammable products and energy products, the external heat source to reach a certain temperature under the action of plastic will burn up. The plastic part of the combustion heat by conduction, radiation and convection of biodegradable plastic is being absorbed, more volatile flammable products; on the other hand, in the process of combustion, the flame of the air surrounding the intense disturbance, increase the combustible volatiles and air mixing speed, making the combustion more violent.
Polyolefin plastics containing halogen flame-retardant mechanism of flame retardant is a kind of can prevent and reduce the burning rate of combustion or improve the ignition point of a substance.
The dehydration of the decomposition products of the flame retardant causes the carbonization of the organic matter to prevent the combustion of the burning plastic from decomposition combustion, while the ordinary carbon does not produce the evaporation combustion and decomposition combustion of the flame. Therefore, if the thermal decomposition of the material can be carried out rapidly without burning at the flammable material stage and decomposed into carbon, the combustion can be prevented.
The quality of eight bromine ether is basically the same as that of foreign countries, but attention should be paid to improving the shape of the product. The thermal stability of six bromo twelve alkane affects its application in the processing of flame retardant products. The heat resistant type six bromine ring twelve alkane can keep the structure in the general polymer processing temperature, and once it is burned, it will not produce too much smoke.
Brominated flame retardants are still the main force in the worldwide flame retardant technology. At present, the bias of brominated flame retardants will follow the further development of science, and it will still be used in 20 years. Our evaluation is: we hate it, but we can't do without it.
Because of the environmental problems caused by halogen compounds, the research on flame retardants gradually transferred to halogen free compounds. Halogen free phosphorus containing flame retardants have aroused people's interest. The halogen phosphorus flame retardant has the following changes when it is burning: phosphorus compounds, phosphoric acid, phosphoric acid and poly phosphoric acid. Polymetaphosphate vitreous body covered on the burning surface, forming a protective film, can be separated as oxygen, flame retardant effect; in addition, phosphate and polymetaphosphate are strong, have very strong dehydration, dehydration and carbonization can make the polymer, carbonized layer formed on the surface of isolating oxygen and heat transfer to polymer therefore, no halogen and phosphorus containing flame retardant has good flame retardant effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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