低聚物型溴/氮阻燃剂在环氧树脂中的应用  

Applications of Bromine/Nitrogen-containing Oligomeric Flame Retardant in Epoxy Resins

作　　者：贾修伟[1] 刘治国[2] 王素敏[2] 楚红英[2] 

机构地区：[1]中山大学材料科学研究所 [2]河南大学精细化学与工程研究所,河南开封475001

出　　处：《中国塑料》2007年第9期75-81,共7页China Plastics

摘　　要：以α,α′,2,3,5,6-六溴对二甲苯与乙二胺的线形低聚物(BNFR)为阻燃剂,采用热分析、红外光谱、有限氧指数和UL94V燃烧实验分析了BNFR对环氧树脂热性能和阻燃性能的影响。结果表明:BNFR能够参与树脂的固化反应,通过化学键成为树脂立体固化网络的组成部分。加入BNFR后,体系热降解5%和10%时的热降解温度均升高了15℃。在常规环氧树脂中添加6%BNFR(间苯二胺为固化剂)或者11%BNFR(邻苯二甲酸酐或JA-1改性胺为固化剂)即能赋予基材UL 94 V-0的阻燃级别,有限氧指数大于26。使阻燃体系交联密度增加的固化剂及固化条件能进一步提升该体系的阻燃性能和热性能。阻燃体系中,n(Br)∶n(Sb)最佳配比为3∶1。Linear oligomer from the condensation of α,α＇, 2,3,5,6-hexabromo-p-dimethyl benzene and ethylene diamine （BNFR） was introduced into epoxy resins to improve the thermal and flame retarded performances. It was found that BNFR participated in the curing of epoxy compounds and the hardeners and thus present as a part of the network. The 5 % and 10 % degradation temperatures of the system were increased about 15 ℃ by the inclusion of BNFR. When the loading of BNFR was 6 % （m-phenyl diamine as hardener） or 11% （phthalic anhydride or JA-I modified amine as hardener）, a grade of UL 94V-0 and a limit oxygen index of 26 were obtained. The fire retardancy and thermal stability of the epoxy resin system may be further enhanced with increasing cross-linking density. The optimum ratio of bromine to antimony was found to be 3 ： 1.

关 键 词：环氧树脂 反应型阻燃剂 阻燃性能 固化反应 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] TQ314.248