News Details
Epoxy resin composite flame retardant
2017-9-29 11:41:36
Epoxy resin composite flame retardant
In recent years, the consumption of flame retardant epoxy resin has grown rapidly, and some emerging epoxy resin composite flame retardants have appeared. The flame retardant mechanism is also improved, but existing epoxy resin composite flame retardant technology still has some shortcomings.
Add flame retardant agent dispersed, and the phase interface with epoxy resin problem has always been a focus in the study of people, now with phosphorus-containing flame retardants although there is no the phosphorus-containing flame retardants that serious damage, but there are also certain toxicity, and water absorption of epoxy resin base material can affect the performance and mechanical performance, etc; The ultrafine of inorganic flame retardant makes its production cost increase greatly. The expansion type flame retardant has a certain moisture absorption, which can lead to the insulation performance and weatherability of epoxy resin, which can be reduced from the added amount, which increases the cost of flame retardant.
For structural flame retardant epoxy resin, the production process is complicated, the cost of production is large, quite a few still in experimental stage and some technical problems to be solved, such as flame retardant structure on thermal and mechanical properties of system, etc.), so its promotion has certain restrictions. However, the production cost of flame retardant curing agent is relatively low and will be an important development direction of structural flame retardant.
On the other hand, a variety of epoxy resin composite flame retardant technology has caused the attention of the people, as long as the flame retardant matching is appropriate, can improve the efficiency of system, flame retardant, or reduce to achieve a given flame retardant efficiency under the conditions of flame retardant agent. This not only reduces the cost of flame retardant processing, but also saves the physical mechanical properties of the flame retardant materials.
In addition the study of flame retardant epoxy resin system technology can not only stay on for the study of the structrue of flame retardant additives, curing agent, flame retardant, also from the point of view of comprehensive, system, as far as possible avoid impact on performance of the polymer itself.
Hong-mei wan 36 with phenol, such as xylene formaldehyde resin (XF) and 3 (2, 3 - epoxy propyl) different melamine urea acid ester (also called melamine urea acid three glycidyl ester, TGIC) as raw materials, a kind of TGIC was synthesized via two steps conversion rate of more than 85%, nitrogen mass fraction of 8.0% new nitrogen flame retardant EP, this kind of resin has excellent flame retardant properties.
Isopropylphenyl Phosphate(IPPP95) Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Is Used For Rubber Products And PVC Plastic Flame Retardant Conveyor Belt, Cable, Chloroprene Rubber, Nitrile Rubber And Other Synthetic Rubber Flame Retardant Plasticizer, Triisopropyl Phenyl Phosphate Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Halogen-Free Phosphate Flame Retardant Plasticizer, Will Not Twice Pollute The Environment; In The Phosphate Ester Species Is A Viscosity, Phosphorus Content Is More Moderate A Model. This Product Is Colorless And Transparent, Good Compatibility, The Use Of Both Flame Retardant And Plasticizer, In The Flame Retardant And Plasticizer To Play A Balance Between The Role, But Also To Make The Processing Of The Same Material And Its Physical Properties.
Richard et al. 37 (1) 1-dichloro-2, 2-2 (4-phenol hydroxyl) ethylene, bisphenol C[2, 2-2 (3-methyl-4-hydroxyphenyl) propane], cyanate vinegar, and bisphenol C EP. The experimental results show that the modified cyanate vinegar EP in the carbon residue rate of N2 (900 ℃), up to 55.8%.
Epoxy resin containing silicon system not only has high heat stability and flame retardancy, and has low toxicity and can improve the dielectric performance of condensates, weather resistance and brittleness, can reduce the glassy state of condensate linear expansion coefficient, stress index, etc., most researchers pay attention to. At relatively low temperatures, silicone flame retardants in Si - O key (key for 451.4 kJ/mol) than C - C key (355.3 kJ/mol) button for easy to absorb more energy and its vibrational energy, for curing the energy of the thermal decomposition to dissolve; At a relatively high temperature, the silicon groups in the composition will participate in carbonization, improve the stability of the carbon layer, and form a heat-resistant coating to prevent further thermal decomposition of the solidified material.
Head etc. 39 with diphenyl silicone glycol DPSD reaction with bisphenol A epoxy resin DGEBA generated EPSi2-1, EPSi3-2, three synthesized epoxy monomers glycidyl phenyl silane TGPS, two glycidyl diphenyl silane DGDPS, 1, 4 (glycidyl namely dimethyl silane) benzene BGDMSB, etc.
The solidification of the silicon quality fraction is obtained by curing the epoxy resin with the epoxy resin. The study found that the flame retardant performance of the silicon was improved significantly, and the maximum weightlessness temperature and the rate of residual carbon were obviously increased in nitrogen and air. The LOI value of the limit oxygen index increases with the increase of silicon mass fraction, and the LOI value of BGDMSB can reach 33.5%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
In recent years, the consumption of flame retardant epoxy resin has grown rapidly, and some emerging epoxy resin composite flame retardants have appeared. The flame retardant mechanism is also improved, but existing epoxy resin composite flame retardant technology still has some shortcomings.
Add flame retardant agent dispersed, and the phase interface with epoxy resin problem has always been a focus in the study of people, now with phosphorus-containing flame retardants although there is no the phosphorus-containing flame retardants that serious damage, but there are also certain toxicity, and water absorption of epoxy resin base material can affect the performance and mechanical performance, etc; The ultrafine of inorganic flame retardant makes its production cost increase greatly. The expansion type flame retardant has a certain moisture absorption, which can lead to the insulation performance and weatherability of epoxy resin, which can be reduced from the added amount, which increases the cost of flame retardant.
For structural flame retardant epoxy resin, the production process is complicated, the cost of production is large, quite a few still in experimental stage and some technical problems to be solved, such as flame retardant structure on thermal and mechanical properties of system, etc.), so its promotion has certain restrictions. However, the production cost of flame retardant curing agent is relatively low and will be an important development direction of structural flame retardant.
On the other hand, a variety of epoxy resin composite flame retardant technology has caused the attention of the people, as long as the flame retardant matching is appropriate, can improve the efficiency of system, flame retardant, or reduce to achieve a given flame retardant efficiency under the conditions of flame retardant agent. This not only reduces the cost of flame retardant processing, but also saves the physical mechanical properties of the flame retardant materials.
In addition the study of flame retardant epoxy resin system technology can not only stay on for the study of the structrue of flame retardant additives, curing agent, flame retardant, also from the point of view of comprehensive, system, as far as possible avoid impact on performance of the polymer itself.
Hong-mei wan 36 with phenol, such as xylene formaldehyde resin (XF) and 3 (2, 3 - epoxy propyl) different melamine urea acid ester (also called melamine urea acid three glycidyl ester, TGIC) as raw materials, a kind of TGIC was synthesized via two steps conversion rate of more than 85%, nitrogen mass fraction of 8.0% new nitrogen flame retardant EP, this kind of resin has excellent flame retardant properties.
Isopropylphenyl Phosphate(IPPP95) Use:
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Is Used For Rubber Products And PVC Plastic Flame Retardant Conveyor Belt, Cable, Chloroprene Rubber, Nitrile Rubber And Other Synthetic Rubber Flame Retardant Plasticizer, Triisopropyl Phenyl Phosphate Applicable To Fabric Coating, Circuit Boards, Flooring, Textiles, PVC, Phenolic Resin And Other Fields.
Isopropylphenyl Phosphate, Flame Retardant IPPP95 Halogen-Free Phosphate Flame Retardant Plasticizer, Will Not Twice Pollute The Environment; In The Phosphate Ester Species Is A Viscosity, Phosphorus Content Is More Moderate A Model. This Product Is Colorless And Transparent, Good Compatibility, The Use Of Both Flame Retardant And Plasticizer, In The Flame Retardant And Plasticizer To Play A Balance Between The Role, But Also To Make The Processing Of The Same Material And Its Physical Properties.
Richard et al. 37 (1) 1-dichloro-2, 2-2 (4-phenol hydroxyl) ethylene, bisphenol C[2, 2-2 (3-methyl-4-hydroxyphenyl) propane], cyanate vinegar, and bisphenol C EP. The experimental results show that the modified cyanate vinegar EP in the carbon residue rate of N2 (900 ℃), up to 55.8%.
Epoxy resin containing silicon system not only has high heat stability and flame retardancy, and has low toxicity and can improve the dielectric performance of condensates, weather resistance and brittleness, can reduce the glassy state of condensate linear expansion coefficient, stress index, etc., most researchers pay attention to. At relatively low temperatures, silicone flame retardants in Si - O key (key for 451.4 kJ/mol) than C - C key (355.3 kJ/mol) button for easy to absorb more energy and its vibrational energy, for curing the energy of the thermal decomposition to dissolve; At a relatively high temperature, the silicon groups in the composition will participate in carbonization, improve the stability of the carbon layer, and form a heat-resistant coating to prevent further thermal decomposition of the solidified material.
Head etc. 39 with diphenyl silicone glycol DPSD reaction with bisphenol A epoxy resin DGEBA generated EPSi2-1, EPSi3-2, three synthesized epoxy monomers glycidyl phenyl silane TGPS, two glycidyl diphenyl silane DGDPS, 1, 4 (glycidyl namely dimethyl silane) benzene BGDMSB, etc.
The solidification of the silicon quality fraction is obtained by curing the epoxy resin with the epoxy resin. The study found that the flame retardant performance of the silicon was improved significantly, and the maximum weightlessness temperature and the rate of residual carbon were obviously increased in nitrogen and air. The LOI value of the limit oxygen index increases with the increase of silicon mass fraction, and the LOI value of BGDMSB can reach 33.5%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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