News Details
Polyolefin plastic flame retardant
2017-12-4 11:15:52
Polyolefin plastic flame retardant
The polyolefin plastic flame retardant is decomposed between 340 and 490, and the amount of heat absorption is 187cal/g. The starting temperature of polyolefin plastic flame retardant is much higher than that of hydrated alumina. It has good thermal stability and good flame retardancy and smoke elimination effect. It is especially suitable for high temperature polyolefin plastics.
Mg (OH) 2 has good flame retardancy when applied to PP (adding more than 50%). When Mg (OH) 2 is applied to PE, its flame retardance effect is superior to Al (OH) 3. This is because magnesium hydroxide is not only dehydrated when it burns, but also has a certain carbonization effect on the polymer, forming a protective layer and playing a flame retardant effect. Under the same filling volume, the difference of flame retardant effect between different aluminum hydroxide and magnesium hydroxide is not obvious, but the two compound uses are better than single use, because although they all are dehydration reaction, they are different in decomposition temperature and heat absorption.
Magnesium hydroxide needs to be dehydrated at a higher temperature and has a carbonization effect at the same time. The heat absorption of magnesium hydroxide is relatively small, because its effect on inhibiting material temperature rise is not as good as that of aluminum hydroxide. The combination of them can complement each other, and its flame retardancy is better than that of single use. Magnesium hydroxide has a good smoke suppression effect. The onset time of smoke onset of PP samples containing Mg (OH) 2 is significantly delayed, the maximum smoke volume and the smoke volume after 4 minutes are much lower than those of halide /Sb2O3 PP samples. Therefore, Mg (OH) 2 is a high efficient smoke elimination filler for PP under the appropriate amount of addition.
Ammonium polyphosphate (ammoniumpolyphosphate, called APP) in polyolefin plastic flame retardant is long chain phosphorus and nitrogen, and its molecular general formula is: (NH4P03) n. It has the advantages of good chemical stability, low hygroscopicity, good dispersity, small specific gravity and low toxicity.
Ammonium polyphosphate in recent years are widely used in plastics, rubber, fiber as flame retardant agent; also can be used for the preparation of expandable fireproof paint, for fire ships, train, cable and high-rise building; also used in the production of powder extinguishing agent for coal, oil, forest fire; in addition, also can be used as fertilizer.
The degree of polymerization of ammonium polyphosphate is the key to determine its quality as a flame retardant. The higher the polymerization degree, the better the fire retardant and fire prevention effect. The development of ammonium polyphosphate in China began in 1978. After more than 20 years of development, the production of ammonium polyphosphate in China has a certain scale, which has adapted to the needs of the domestic market.
The production capacity of ammonium polyphosphate in China is mainly concentrated in southwest, East China and South China, with the largest production in Southwest China, followed by East China and South China. There are few ammonium polyphosphate production in North China, northeast and northwest regions. With the continuous expansion of the consumption market of ammonium polyphosphate, its output will continue to increase.
Triphenyl Phosphate (TPP)
Triphenyl Phosphatetpp-cas: 15-86-6
EINECS number: 204-112-2
Chinese Name: Triphenyl Phosphate
Chinese alias: phosphoric acid three phenyl ester; flame retardant TPP; TPP
English Name: Triphenyl Phosphate
English alias: Triphenyl Phosphate free of phenol; Triphenyl Phosphate (TPPa); Triphenyl Phosphate white XTL Phosphoric acid triphenyl ester; TPP
Molecular formula: C18H15O4P; OP (OC6H5) 3
Appearance and properties: white crystalline powder, odorless, slightly deliquescence
Molecular weight: 326.29
Steam pressure: 0.01kPa/20 ℃
The above is the product of the CAS, such as Triphenyl Phosphate tpp-cas: 15-86-6 other information please contact us!
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.
In the application of inorganic flame retardants, anionic layered functional materials have developed rapidly as flame retardants. It is a kind of inorganic compound with special structure, M2+ is two valence ion, usually magnesium, M3+ is trivalent metal ion, and An- is anionic. This material is called water talcum (LDHs) for short. Hydrotalcite has been widely applied in catalysis, ion exchange, adsorption, medicine and other fields due to its unique lamellar structure, lamellar composition and interlayer anionic tunable denaturation.
As a halogen-free high smoke retarding agent, hydrotalcite can be widely used in plastics, rubber, coatings and other fields. The development of magnesium anionic layered functional materials in China started in the late 1990s, although the development history is short, but it has developed rapidly.
From the current situation of magnesium resources in China and the urgent demand and huge potential of the new flame retardant market, it is not difficult to predict that the time for rapid development of China's Magnesia anion layered functional materials is ripe. In the next 5 years, as a substitute for bromine - based flame retardants, the Chinese magnesium anionic layered functional materials will enter the peak period of development.
Phosphorous additives are mainly in the condensed phase. The mechanism of flame retardance is: (1) phosphoric acid is used as a dehydrating agent, and carbon is promoted. The generation of carbon reduces the heat conduction from flame to condensed phase. (2) the phosphoric acid can absorb heat, because it prevents the CO oxidation to CO2 and reduces the heating process.
The condensed phase protective layer to form a thin layer of glass or liquid, thus reducing the oxygen diffusion heat and mass transfer between gas and solid phase, inhibited the carbon oxidation process, reducing flame retardant thermal decomposition change as follows: flame retardant, phosphorous acid, phosphoric acid, partial polymetaphosphate polymetaphosphate is stable, less volatile compounds, with strong dehydration, in the polymer surface complexes isolated from air and water; out absorb a lot of heat, so that the flame retardant polymer surface thermal decomposition release of volatile phosphides by mass spectrometry analysis showed that the concentration of hydrogen storage is greatly reduced, showed that the PO capture H?? that is, PO? +H =HPO?. These substances are mainly red phosphorus, ammonium polyphosphate and phosphorus amine, tricresyl phosphate and most phosphorus compounds, can make the ignition temperature.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The polyolefin plastic flame retardant is decomposed between 340 and 490, and the amount of heat absorption is 187cal/g. The starting temperature of polyolefin plastic flame retardant is much higher than that of hydrated alumina. It has good thermal stability and good flame retardancy and smoke elimination effect. It is especially suitable for high temperature polyolefin plastics.
Mg (OH) 2 has good flame retardancy when applied to PP (adding more than 50%). When Mg (OH) 2 is applied to PE, its flame retardance effect is superior to Al (OH) 3. This is because magnesium hydroxide is not only dehydrated when it burns, but also has a certain carbonization effect on the polymer, forming a protective layer and playing a flame retardant effect. Under the same filling volume, the difference of flame retardant effect between different aluminum hydroxide and magnesium hydroxide is not obvious, but the two compound uses are better than single use, because although they all are dehydration reaction, they are different in decomposition temperature and heat absorption.
Magnesium hydroxide needs to be dehydrated at a higher temperature and has a carbonization effect at the same time. The heat absorption of magnesium hydroxide is relatively small, because its effect on inhibiting material temperature rise is not as good as that of aluminum hydroxide. The combination of them can complement each other, and its flame retardancy is better than that of single use. Magnesium hydroxide has a good smoke suppression effect. The onset time of smoke onset of PP samples containing Mg (OH) 2 is significantly delayed, the maximum smoke volume and the smoke volume after 4 minutes are much lower than those of halide /Sb2O3 PP samples. Therefore, Mg (OH) 2 is a high efficient smoke elimination filler for PP under the appropriate amount of addition.
Ammonium polyphosphate (ammoniumpolyphosphate, called APP) in polyolefin plastic flame retardant is long chain phosphorus and nitrogen, and its molecular general formula is: (NH4P03) n. It has the advantages of good chemical stability, low hygroscopicity, good dispersity, small specific gravity and low toxicity.
Ammonium polyphosphate in recent years are widely used in plastics, rubber, fiber as flame retardant agent; also can be used for the preparation of expandable fireproof paint, for fire ships, train, cable and high-rise building; also used in the production of powder extinguishing agent for coal, oil, forest fire; in addition, also can be used as fertilizer.
The degree of polymerization of ammonium polyphosphate is the key to determine its quality as a flame retardant. The higher the polymerization degree, the better the fire retardant and fire prevention effect. The development of ammonium polyphosphate in China began in 1978. After more than 20 years of development, the production of ammonium polyphosphate in China has a certain scale, which has adapted to the needs of the domestic market.
The production capacity of ammonium polyphosphate in China is mainly concentrated in southwest, East China and South China, with the largest production in Southwest China, followed by East China and South China. There are few ammonium polyphosphate production in North China, northeast and northwest regions. With the continuous expansion of the consumption market of ammonium polyphosphate, its output will continue to increase.
Triphenyl Phosphate (TPP)
Triphenyl Phosphatetpp-cas: 15-86-6
EINECS number: 204-112-2
Chinese Name: Triphenyl Phosphate
Chinese alias: phosphoric acid three phenyl ester; flame retardant TPP; TPP
English Name: Triphenyl Phosphate
English alias: Triphenyl Phosphate free of phenol; Triphenyl Phosphate (TPPa); Triphenyl Phosphate white XTL Phosphoric acid triphenyl ester; TPP
Molecular formula: C18H15O4P; OP (OC6H5) 3
Appearance and properties: white crystalline powder, odorless, slightly deliquescence
Molecular weight: 326.29
Steam pressure: 0.01kPa/20 ℃
The above is the product of the CAS, such as Triphenyl Phosphate tpp-cas: 15-86-6 other information please contact us!
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.
In the application of inorganic flame retardants, anionic layered functional materials have developed rapidly as flame retardants. It is a kind of inorganic compound with special structure, M2+ is two valence ion, usually magnesium, M3+ is trivalent metal ion, and An- is anionic. This material is called water talcum (LDHs) for short. Hydrotalcite has been widely applied in catalysis, ion exchange, adsorption, medicine and other fields due to its unique lamellar structure, lamellar composition and interlayer anionic tunable denaturation.
As a halogen-free high smoke retarding agent, hydrotalcite can be widely used in plastics, rubber, coatings and other fields. The development of magnesium anionic layered functional materials in China started in the late 1990s, although the development history is short, but it has developed rapidly.
From the current situation of magnesium resources in China and the urgent demand and huge potential of the new flame retardant market, it is not difficult to predict that the time for rapid development of China's Magnesia anion layered functional materials is ripe. In the next 5 years, as a substitute for bromine - based flame retardants, the Chinese magnesium anionic layered functional materials will enter the peak period of development.
Phosphorous additives are mainly in the condensed phase. The mechanism of flame retardance is: (1) phosphoric acid is used as a dehydrating agent, and carbon is promoted. The generation of carbon reduces the heat conduction from flame to condensed phase. (2) the phosphoric acid can absorb heat, because it prevents the CO oxidation to CO2 and reduces the heating process.
The condensed phase protective layer to form a thin layer of glass or liquid, thus reducing the oxygen diffusion heat and mass transfer between gas and solid phase, inhibited the carbon oxidation process, reducing flame retardant thermal decomposition change as follows: flame retardant, phosphorous acid, phosphoric acid, partial polymetaphosphate polymetaphosphate is stable, less volatile compounds, with strong dehydration, in the polymer surface complexes isolated from air and water; out absorb a lot of heat, so that the flame retardant polymer surface thermal decomposition release of volatile phosphides by mass spectrometry analysis showed that the concentration of hydrogen storage is greatly reduced, showed that the PO capture H?? that is, PO? +H =HPO?. These substances are mainly red phosphorus, ammonium polyphosphate and phosphorus amine, tricresyl phosphate and most phosphorus compounds, can make the ignition temperature.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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