News Details
Nitrogen and phosphorus expansive flame retardant
2017-10-5 12:01:54
Nitrogen and phosphorus expansive flame retardant is widely concerned because of its high efficiency and low toxicity. This paper introduces the composition of the nitrogen and phosphorus expansive flame retardant.
Along with the social development, high polymer material widely used in industrial production and People's Daily life, high-rise buildings, indoor decoration, electrical appliances, cars and conveyor belt and so on involved in the coal mine is the existence of polymer materials. However, most macromolecular materials have a fatal defect, which is to decompose and burn at high temperature. Most of them the oxygen index of less than 21, so, as long as meet the fire, most high polymer material would was lit in the air, then burning, its molten drop objects can also be other fuel, ignition of fire spread, in addition, the polymer materials by thermal decomposition is released by burning gas, black smoke poses a great threat to people's life safety is and damage. Therefore, the flame retardant of high polymer materials has attracted more and more attention. Flame retardants for high polymer materials should be applied.
Flame retardant according to the attributes can be divided into organic flame retardants and inorganic flame retardants and inorganic flame retardants have low smoke, low toxicity, no halogen, good stability, price is low wait for an advantage, but there is a large, poor compatibility with material and reduce the material performance and so on shortcomings, is limited to a certain degree of. Although organic halogen flame retarding agent has good compatibility with material, adding amount of small, cost-effective, small influence on the performance of the material, but the large amount of smoke when burning and produce the large amounts of toxic gases such as hydrogen halide, cause harm to human beings and their environment.
With the emergence of dioxins, people actively develop new halogen organic flame retardants to replace halogen flame retardants. System also contains acid source, carbon source and gas source of nitrogen and phosphorus expansion type flame retardant (IntumescentFlameRetardant, nitrogen and phosphorus expansion type flame retardant) filled polymer by strong heat or burning, the surface to generate a uniform layer of porous carbon foam layer, insulation, oxygen, smoke suppression and the role of the drop, and halogen free, low smoke, low toxicity, no corrosive gases, has good flame retardant and smoke suppression function, thus is becoming more and more attention.
Nitrogen and phosphorus expansion type flame retardant in antimony oxide as the association effect agent, do not contain halogen, when heated, polymer containing this kind of flame retardant in the polymer surface can generate a uniform layer of carbon foam layer, insulation, oxygen, smoke suppression and prevent drop produce effect [2]. Nitrogen and phosphorus expansive flame retardant is mainly composed of three parts, the source of acid source, gas source and carbon source. Acid source, namely the dehydrating agent or carbonized promoter, usually in the form of inorganic acid or when heated to generate inorganic acid salt, can promote the formation of carbon, inorganic acid requires high boiling point, and oxidation is not too strong.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
The common acid source types include phosphoric acid, diphosphate, trichloro phosphorus, phosphorus trichloride, sulfuric acid, boric acid, borate, phosphate, phosphate and so on. Gas source, namely foaming source, can produce inert gas, for ammonium and amide substances, commonly seen type has melamine, dicyandiamide, urea, polyamide, urea formaldehyde resin and so on.
Carbon source, namely into carbon agent, bubble carbonization layer, mainly high carbon content of polyol, common types are starch, dextrin, phenolic resin, triazine derivatives, pentaerythritol and dimer and trimer, neopentyl glycol, glycerin, etc. The selection principle of each component is:
(1) acid source: the acid source must be able to dehydrate the carbonyl alcohol. The acid source must release the acid at a lower temperature, especially the decomposition temperature of the polyol.
(2) carbon source: the validity of carbon source is related to the amount of carbon and the number of active hydroxyl. The carbon source should react with the catalyst at a lower temperature before the decomposition of the material itself or the material;
(3) air source: the foaming agent should be decomposed before the solidified flame retardant system of nitrogen and phosphorus, and release a large amount of gas.
For a particular inflatable flame retardant polymer system, there are sometimes no three components at the same time, and the polymer itself can act as one of the components. Yan-ming liu studied such as melamine/phosphoric acid synthesis expansion type flame retardant poly (melamine phosphate on the properties of glass fiber reinforced polyamide (PA6) flame retardant effect, the results show that when the melamine/phosphate mole ratio is 1.0:1.2 the synthesis of poly (melamine phosphate flame retardant performance is best, flame retardant performance can be achieved UL94V level 0, and the comprehensive performance of flame retardant glass fiber reinforced PA6 can reach the indexes of the same products abroad.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Along with the social development, high polymer material widely used in industrial production and People's Daily life, high-rise buildings, indoor decoration, electrical appliances, cars and conveyor belt and so on involved in the coal mine is the existence of polymer materials. However, most macromolecular materials have a fatal defect, which is to decompose and burn at high temperature. Most of them the oxygen index of less than 21, so, as long as meet the fire, most high polymer material would was lit in the air, then burning, its molten drop objects can also be other fuel, ignition of fire spread, in addition, the polymer materials by thermal decomposition is released by burning gas, black smoke poses a great threat to people's life safety is and damage. Therefore, the flame retardant of high polymer materials has attracted more and more attention. Flame retardants for high polymer materials should be applied.
Flame retardant according to the attributes can be divided into organic flame retardants and inorganic flame retardants and inorganic flame retardants have low smoke, low toxicity, no halogen, good stability, price is low wait for an advantage, but there is a large, poor compatibility with material and reduce the material performance and so on shortcomings, is limited to a certain degree of. Although organic halogen flame retarding agent has good compatibility with material, adding amount of small, cost-effective, small influence on the performance of the material, but the large amount of smoke when burning and produce the large amounts of toxic gases such as hydrogen halide, cause harm to human beings and their environment.
With the emergence of dioxins, people actively develop new halogen organic flame retardants to replace halogen flame retardants. System also contains acid source, carbon source and gas source of nitrogen and phosphorus expansion type flame retardant (IntumescentFlameRetardant, nitrogen and phosphorus expansion type flame retardant) filled polymer by strong heat or burning, the surface to generate a uniform layer of porous carbon foam layer, insulation, oxygen, smoke suppression and the role of the drop, and halogen free, low smoke, low toxicity, no corrosive gases, has good flame retardant and smoke suppression function, thus is becoming more and more attention.
Nitrogen and phosphorus expansion type flame retardant in antimony oxide as the association effect agent, do not contain halogen, when heated, polymer containing this kind of flame retardant in the polymer surface can generate a uniform layer of carbon foam layer, insulation, oxygen, smoke suppression and prevent drop produce effect [2]. Nitrogen and phosphorus expansive flame retardant is mainly composed of three parts, the source of acid source, gas source and carbon source. Acid source, namely the dehydrating agent or carbonized promoter, usually in the form of inorganic acid or when heated to generate inorganic acid salt, can promote the formation of carbon, inorganic acid requires high boiling point, and oxidation is not too strong.
Cresyl Diphenyl Phosphate(CDP) Use
This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.
The common acid source types include phosphoric acid, diphosphate, trichloro phosphorus, phosphorus trichloride, sulfuric acid, boric acid, borate, phosphate, phosphate and so on. Gas source, namely foaming source, can produce inert gas, for ammonium and amide substances, commonly seen type has melamine, dicyandiamide, urea, polyamide, urea formaldehyde resin and so on.
Carbon source, namely into carbon agent, bubble carbonization layer, mainly high carbon content of polyol, common types are starch, dextrin, phenolic resin, triazine derivatives, pentaerythritol and dimer and trimer, neopentyl glycol, glycerin, etc. The selection principle of each component is:
(1) acid source: the acid source must be able to dehydrate the carbonyl alcohol. The acid source must release the acid at a lower temperature, especially the decomposition temperature of the polyol.
(2) carbon source: the validity of carbon source is related to the amount of carbon and the number of active hydroxyl. The carbon source should react with the catalyst at a lower temperature before the decomposition of the material itself or the material;
(3) air source: the foaming agent should be decomposed before the solidified flame retardant system of nitrogen and phosphorus, and release a large amount of gas.
For a particular inflatable flame retardant polymer system, there are sometimes no three components at the same time, and the polymer itself can act as one of the components. Yan-ming liu studied such as melamine/phosphoric acid synthesis expansion type flame retardant poly (melamine phosphate on the properties of glass fiber reinforced polyamide (PA6) flame retardant effect, the results show that when the melamine/phosphate mole ratio is 1.0:1.2 the synthesis of poly (melamine phosphate flame retardant performance is best, flame retardant performance can be achieved UL94V level 0, and the comprehensive performance of flame retardant glass fiber reinforced PA6 can reach the indexes of the same products abroad.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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