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Flame retardant mechanism of common flame retardant epoxy resin
2017-11-12 14:59:34
Flame retardant mechanism of common flame retardant epoxy resin
Halogen flame retardants of flame retardant mechanism of epoxy resins. The flame retardant mechanism of halide flame retardant is gas phase mechanism. Halogen containing flame retardant produced by decomposing halogen ions; halogen ions through lively reaction of HX; HX and OHH reaction of hydrogen radicals after consumption. The combustion of chain reaction is inhibited, the combustion speed slows down, so that the flame is extinguished. The flame retardant effect of chlorine based flame retardant is better than that of brominated flame retardant because the binding energy of chlorinated flame retardant is greater than that of bromide and the reaction speed is slow with OH.
Phosphorus flame retardant mechanism of common flame retardant mechanism of epoxy resin. The flame retardant mechanism of phosphorus flame retardants is condensed camera theory. It is generally believed that organic phosphorus flame retardants can play a role of flame retardant in both solid and liquid phases. When burned, non flammable liquid membrane into Mr. phosphorus compound phosphate, phosphoric acid and then further dehydrated to produce phosphate, phosphoric acid and then polymerized into partial polymetaphosphate. In this process, not only the phosphate liquid film covering, and polymetaphosphate is strong and strong dehydrating agent, the dehydration and carbonization of polymer materials. The carbon membrane cut off the air, thereby play a better role in flame retardant phosphide.
Three oxidation of two antimony alone has no flame retardant effect, such as with halogen, that is, flame retardant effect. This is because three oxidation of two antimony reacts with halogen to form antimony halides and oxygen halides. When the gas is burned, the reaction of the free radical can be stopped by the antimony halide. The flame retardant effect is shown.
Aluminum hydrate at 250 DEG to generate thermal decomposition of alumina and water, diluted flame gas concentration, at the same time per mole of A1 (OH) 3 1.9kJ to absorb heat, also play a cooling effect. A1 (OH) 3 has the greatest heat absorption and is beneficial to the formation of charring layer in all kinds of aluminum hydrate, so the flame retardant effect is the best.
Research status and application of epoxy resin flame retardant technology for flame retardant mechanism of epoxy resin. Flame retardant properties of GIng - HoHBiue et al on phosphorus / silicon epoxy resin were studied, proved that the phosphorus / silicon has synergistic effect on improving the performance of flame retardant epoxy resin and limit oxygen index. Provide the carbonized layer formed by the trend in the combustion of phosphorus and silicon, the thermal stability of charring layer is improved, both of them show their own contribution in the aspects of the flame retardant. This synergistic effect increases the ultimate oxygen index of epoxy resin from 26 to 36. In addition, the synergistic effect of phosphorus / silicon on flame retardancy can be further improved by replacing silane with siloxane. Oxygen index can reach 45. The mechanism is mainly that the continuous generation of silica layer reduces the thermal oxidation of the carbonized layer.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
CAS No.:13674-87-8
HS: 29199000
Tax Rate (%): 9%
Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP) Raw Materials: Phosphorus Oxychloride, Epichlorohydrin
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
In general, halogen / three oxidation of two antimony has been proved to play a good synergistic effect in the flame retardancy of epoxy resin, but a large amount of smoke will be produced during combustion. XMxlaot6ng and other scholars have found that the use of MoO2 instead of three oxidation of two antimony can effectively reduce smoke production, but also enhance the synergistic effect. Bisphenol A epoxy resin was used as the research object, methyl four hydrogenated phenyl hydride as curing agent, and 2 - 4 - methyl imidazole as accelerator.
Aromatic bromine and antimony oxide flame retardant technology is widely used in epoxy resin flame retardant system. However, the main problem of the system is that a large amount of toxic and corrosive gas will be produced when the product is burning. Based on this problem, D.DeMel et al "by two alkyl (or aryl) modified epoxy resin was phosphorus. The results show that the double A intoxicated glycidyl ether and two alkyl (or aryl) phosphorus chemical synthesis, and then to 4, 4 '- two amine two phenyl sulfone as curing agent can be produced good flame retardant effect, effectively overcomes the shortcomings of the flame retardant system, oxygen index reached 31.
The flame retardancy of phosphorus containing epoxy resin was studied by G126 - HobIMe et al. They used two amine mixture of 2 P: Double - (4 - amino) - phenyl phosphine oxide and double - (3 - amino) - phenyl phosphine oxide as the curing agent of epoxy resin used in E experiment is epoxy 828 and epoxy 1510.
In order to improve the content of phosphorus compounds, double (glycidyl) phenylphosphine oxide are used, these 2 kinds of flame retardant two amine curing agent of epoxy resin is very similar to the role of. From the pyrolysis quality analysis (TGA) test results, all the phosphorus containing epoxy resin carbon layer production is very high. The experimental results show that their limiting oxygen index can reach 33~51, which has a high flame retardant effect.
Researchers have modified epoxy resin flame retardant formulations with acrylic acid, three antimony oxide and two halides, and used as flame retardants. Each component is evenly mixed with three roller machine to make the light cured solder resist printing ink. Use 300 mesh poly version of the printing ink is printed on the distribution of copper foil etching cheese insulation substrate, the 80W high pressure mercury lamp irradiation, to cure the 15cm distance, 1000mJ / cm2 light. The prepared solder resist film after test can reach UL - 94V - 0 standard flame retardant.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Halogen flame retardants of flame retardant mechanism of epoxy resins. The flame retardant mechanism of halide flame retardant is gas phase mechanism. Halogen containing flame retardant produced by decomposing halogen ions; halogen ions through lively reaction of HX; HX and OHH reaction of hydrogen radicals after consumption. The combustion of chain reaction is inhibited, the combustion speed slows down, so that the flame is extinguished. The flame retardant effect of chlorine based flame retardant is better than that of brominated flame retardant because the binding energy of chlorinated flame retardant is greater than that of bromide and the reaction speed is slow with OH.
Phosphorus flame retardant mechanism of common flame retardant mechanism of epoxy resin. The flame retardant mechanism of phosphorus flame retardants is condensed camera theory. It is generally believed that organic phosphorus flame retardants can play a role of flame retardant in both solid and liquid phases. When burned, non flammable liquid membrane into Mr. phosphorus compound phosphate, phosphoric acid and then further dehydrated to produce phosphate, phosphoric acid and then polymerized into partial polymetaphosphate. In this process, not only the phosphate liquid film covering, and polymetaphosphate is strong and strong dehydrating agent, the dehydration and carbonization of polymer materials. The carbon membrane cut off the air, thereby play a better role in flame retardant phosphide.
Three oxidation of two antimony alone has no flame retardant effect, such as with halogen, that is, flame retardant effect. This is because three oxidation of two antimony reacts with halogen to form antimony halides and oxygen halides. When the gas is burned, the reaction of the free radical can be stopped by the antimony halide. The flame retardant effect is shown.
Aluminum hydrate at 250 DEG to generate thermal decomposition of alumina and water, diluted flame gas concentration, at the same time per mole of A1 (OH) 3 1.9kJ to absorb heat, also play a cooling effect. A1 (OH) 3 has the greatest heat absorption and is beneficial to the formation of charring layer in all kinds of aluminum hydrate, so the flame retardant effect is the best.
Research status and application of epoxy resin flame retardant technology for flame retardant mechanism of epoxy resin. Flame retardant properties of GIng - HoHBiue et al on phosphorus / silicon epoxy resin were studied, proved that the phosphorus / silicon has synergistic effect on improving the performance of flame retardant epoxy resin and limit oxygen index. Provide the carbonized layer formed by the trend in the combustion of phosphorus and silicon, the thermal stability of charring layer is improved, both of them show their own contribution in the aspects of the flame retardant. This synergistic effect increases the ultimate oxygen index of epoxy resin from 26 to 36. In addition, the synergistic effect of phosphorus / silicon on flame retardancy can be further improved by replacing silane with siloxane. Oxygen index can reach 45. The mechanism is mainly that the continuous generation of silica layer reduces the thermal oxidation of the carbonized layer.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
CAS No.:13674-87-8
HS: 29199000
Tax Rate (%): 9%
Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP) Raw Materials: Phosphorus Oxychloride, Epichlorohydrin
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
In general, halogen / three oxidation of two antimony has been proved to play a good synergistic effect in the flame retardancy of epoxy resin, but a large amount of smoke will be produced during combustion. XMxlaot6ng and other scholars have found that the use of MoO2 instead of three oxidation of two antimony can effectively reduce smoke production, but also enhance the synergistic effect. Bisphenol A epoxy resin was used as the research object, methyl four hydrogenated phenyl hydride as curing agent, and 2 - 4 - methyl imidazole as accelerator.
Aromatic bromine and antimony oxide flame retardant technology is widely used in epoxy resin flame retardant system. However, the main problem of the system is that a large amount of toxic and corrosive gas will be produced when the product is burning. Based on this problem, D.DeMel et al "by two alkyl (or aryl) modified epoxy resin was phosphorus. The results show that the double A intoxicated glycidyl ether and two alkyl (or aryl) phosphorus chemical synthesis, and then to 4, 4 '- two amine two phenyl sulfone as curing agent can be produced good flame retardant effect, effectively overcomes the shortcomings of the flame retardant system, oxygen index reached 31.
The flame retardancy of phosphorus containing epoxy resin was studied by G126 - HobIMe et al. They used two amine mixture of 2 P: Double - (4 - amino) - phenyl phosphine oxide and double - (3 - amino) - phenyl phosphine oxide as the curing agent of epoxy resin used in E experiment is epoxy 828 and epoxy 1510.
In order to improve the content of phosphorus compounds, double (glycidyl) phenylphosphine oxide are used, these 2 kinds of flame retardant two amine curing agent of epoxy resin is very similar to the role of. From the pyrolysis quality analysis (TGA) test results, all the phosphorus containing epoxy resin carbon layer production is very high. The experimental results show that their limiting oxygen index can reach 33~51, which has a high flame retardant effect.
Researchers have modified epoxy resin flame retardant formulations with acrylic acid, three antimony oxide and two halides, and used as flame retardants. Each component is evenly mixed with three roller machine to make the light cured solder resist printing ink. Use 300 mesh poly version of the printing ink is printed on the distribution of copper foil etching cheese insulation substrate, the 80W high pressure mercury lamp irradiation, to cure the 15cm distance, 1000mJ / cm2 light. The prepared solder resist film after test can reach UL - 94V - 0 standard flame retardant.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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