News Details
Curing flame retardant
2017-9-28 11:14:31
Curing flame retardant
The curing flame retardant is an important aspect of the research of structural flame retardant epoxy resin. The cured epoxy resin with curing agent has excellent flame retardant and no precipitate phenomenon.
At present, the curing flame retardants mainly contain brominated chloride curing flame retardants, phosphorous curing flame retardants, nitrogen curing flame retardants and 4 kinds of silicon curing retardants. Contain the bromine flame retardant research first, curing technology is also the most mature, because of its low cost, good flame retardant effect and is widely used, but also the combustion will produce poisonous gas, increasingly replaced by no halogen curing flame retardants.
Due to the high amount of hydroxyl in the epoxy curing substance and the phosphorous compounds are easy to react with hydroxyl, phosphorous flame retardant is the high effective flame retardant of epoxy resin.
Toldy etc with phosphorus pentoxide and three between phenol and melamine containing the organic phosphorus was synthesized material: generation of three between phenol (MPP), the second generation between phenol (DPP) and phenol (TPP) between three generations, at the same time as the EP curing agent, and study the thermal performance of the system. The results showed that when the phosphorus content was 2.5%, the LOI value of the system reached 28%, and the flame retardant performance reached UL94 V- 0.
C S Wang et al. responded by DOPO and formaldehyde, and prepared two kinds of phenolic epoxy curing agent dopo-fp and dopo-fmp respectively with phenolic resin and melamine and phenol. Research shows that these two kinds of curing agent curing resin at 700 ℃, the residual carbon amount > 30%. Dopo-fp cured resin reached UL94 v-0 with a phosphorus quality score of 1.45%, and dopo-fmp cured resin reached UL94 V-0 with 0.81% and 2.36% respectively.
Sergei V Lechik synthesized by A new type of phosphorus curing agents such as BAMPO (2 amino phenyl methyl phosphonic acid ester), used to DGEBA cured epoxy resin (bisphenol A glycidyl ester), can be used in the production of epoxy resin/glass fiber laminate. Compared with the cured epoxy resin of DDS, the mechanical properties of the epoxy resin prepared by BAMPO are comparable, but the flame retardant performance is greatly improved.
Isopropylphenyl Phosphate(IPPP65) Uses:
Isopropylphenyl Phosphate, Flame Retardant IPPP65 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.
Ying Ling Liu et al. used DOPO and 4-hydroxybenzoic acid to prepare new phenolic resin (dopo-pn) as the curing agent for epoxy resin, and studied the thermal properties of the curing system. The results showed that when the phosphorus content was 2 %, the LOI of the solidified substance was 26 %, and it reached UL94 V0. The curing system also has the very high thermal stability, the Tg is as high as 160 ℃.
Wei Zhenjie use (2, 3 - epoxypropyl oxygen radicals) propyl silane three oxygen radicals reaction with phosphoric acid was prepared by A kind of organic silicon complex compound containing phosphorus, and join the bisphenol A epoxy resin / 4, 4 - diamino diphenyl methane system was prepared by epoxy resin/organic silicon complex compound containing phosphorus curing.
The study shows that the Tg of the curing system is higher than that of pure epoxy resin curing system, and the initial decomposition temperature is lower than that of pure epoxy resin. When the phosphorus content of organic silicon complex compound of 30, curing system of Tg increased 9 ℃, limit oxygen index of 27.3%, to 700 ℃ carbon residue rate of 34.1%, higher than that of pure epoxy resin respectively 28% and 77.8%.
Flame retardant epoxy resin
The flame retardant group (except halogen elements) is introduced into the main chain of epoxy resin, thus becoming the essential flame retardant epoxy resin. Nature of flame retardant epoxy resin flame retardant effectiveness persistent, there is no additive flame retardants have volatilizing, dissolution, and the problem of migration and intramolecular synergistic flame retardant effect can be realized, is environmentally friendly flame retardant polymer materials. But high production costs and complex manufacturing processes limit their use and can only be considered for places that don't pay much attention to economic factors.
Phosphorus phosphate ester flame retardant epoxy resin epoxy resin is organic phosphorus is an important series of halogen-free flame retardant epoxy resin, main chain connected with epoxy compounds containing phosphate ester compared with pure resin showed excellent flame retardant properties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The curing flame retardant is an important aspect of the research of structural flame retardant epoxy resin. The cured epoxy resin with curing agent has excellent flame retardant and no precipitate phenomenon.
At present, the curing flame retardants mainly contain brominated chloride curing flame retardants, phosphorous curing flame retardants, nitrogen curing flame retardants and 4 kinds of silicon curing retardants. Contain the bromine flame retardant research first, curing technology is also the most mature, because of its low cost, good flame retardant effect and is widely used, but also the combustion will produce poisonous gas, increasingly replaced by no halogen curing flame retardants.
Due to the high amount of hydroxyl in the epoxy curing substance and the phosphorous compounds are easy to react with hydroxyl, phosphorous flame retardant is the high effective flame retardant of epoxy resin.
Toldy etc with phosphorus pentoxide and three between phenol and melamine containing the organic phosphorus was synthesized material: generation of three between phenol (MPP), the second generation between phenol (DPP) and phenol (TPP) between three generations, at the same time as the EP curing agent, and study the thermal performance of the system. The results showed that when the phosphorus content was 2.5%, the LOI value of the system reached 28%, and the flame retardant performance reached UL94 V- 0.
C S Wang et al. responded by DOPO and formaldehyde, and prepared two kinds of phenolic epoxy curing agent dopo-fp and dopo-fmp respectively with phenolic resin and melamine and phenol. Research shows that these two kinds of curing agent curing resin at 700 ℃, the residual carbon amount > 30%. Dopo-fp cured resin reached UL94 v-0 with a phosphorus quality score of 1.45%, and dopo-fmp cured resin reached UL94 V-0 with 0.81% and 2.36% respectively.
Sergei V Lechik synthesized by A new type of phosphorus curing agents such as BAMPO (2 amino phenyl methyl phosphonic acid ester), used to DGEBA cured epoxy resin (bisphenol A glycidyl ester), can be used in the production of epoxy resin/glass fiber laminate. Compared with the cured epoxy resin of DDS, the mechanical properties of the epoxy resin prepared by BAMPO are comparable, but the flame retardant performance is greatly improved.
Isopropylphenyl Phosphate(IPPP65) Uses:
Isopropylphenyl Phosphate, Flame Retardant IPPP65 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.
Ying Ling Liu et al. used DOPO and 4-hydroxybenzoic acid to prepare new phenolic resin (dopo-pn) as the curing agent for epoxy resin, and studied the thermal properties of the curing system. The results showed that when the phosphorus content was 2 %, the LOI of the solidified substance was 26 %, and it reached UL94 V0. The curing system also has the very high thermal stability, the Tg is as high as 160 ℃.
Wei Zhenjie use (2, 3 - epoxypropyl oxygen radicals) propyl silane three oxygen radicals reaction with phosphoric acid was prepared by A kind of organic silicon complex compound containing phosphorus, and join the bisphenol A epoxy resin / 4, 4 - diamino diphenyl methane system was prepared by epoxy resin/organic silicon complex compound containing phosphorus curing.
The study shows that the Tg of the curing system is higher than that of pure epoxy resin curing system, and the initial decomposition temperature is lower than that of pure epoxy resin. When the phosphorus content of organic silicon complex compound of 30, curing system of Tg increased 9 ℃, limit oxygen index of 27.3%, to 700 ℃ carbon residue rate of 34.1%, higher than that of pure epoxy resin respectively 28% and 77.8%.
Flame retardant epoxy resin
The flame retardant group (except halogen elements) is introduced into the main chain of epoxy resin, thus becoming the essential flame retardant epoxy resin. Nature of flame retardant epoxy resin flame retardant effectiveness persistent, there is no additive flame retardants have volatilizing, dissolution, and the problem of migration and intramolecular synergistic flame retardant effect can be realized, is environmentally friendly flame retardant polymer materials. But high production costs and complex manufacturing processes limit their use and can only be considered for places that don't pay much attention to economic factors.
Phosphorus phosphate ester flame retardant epoxy resin epoxy resin is organic phosphorus is an important series of halogen-free flame retardant epoxy resin, main chain connected with epoxy compounds containing phosphate ester compared with pure resin showed excellent flame retardant properties.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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