含烯丙基六苯氧基环三磷腈的合成及其在阻燃丙烯酸酯树脂中的应用

摘要

A novel cyclophosphazene flame retardant monomer with alyl group, 2-allyl phenoxy-pentaphenoxycyclotriphosphazene ( APPCP ) , was synthesized by using hexachlorocyclotriphosphazene ( HCCP) , 2-allylphenol and phenol as the starting materials. The structure of the product was characterized by FTIR, MS, 'H NMR and elemental analysis. The flame retardant acrylate resin was prepared through copolymerized with APPCP and aerylate resin monomers, and the effects of APPCP on the thermal and flame-retardant properties were investigated. With the addition of 20% APPCP, the flammability class of the copolymerized acrylate resin was attained to V-0, with the limiting oxygen index ( LOI) value increased to 31.2%, and the residual mass up to 23. 2% at 600 ℃.%以六氯环三磷腈(HCCP)、苯酚和2-烯丙基苯酚为原料,合成了新型含烯丙基的环磷腈阻燃单体(2-烯丙基苯氧基)五苯氧基环三磷腈(APPCP),用红外光谱、核磁氢谱、质谱和元素分析表征其组成和结构.将APPCP与丙烯酸酯单体共聚制备了阻燃丙烯酸酯树脂,测试了共聚丙烯酸酯树脂的热稳定性和阻燃性,当APPCP用量为20％时,共聚丙烯酸酯树脂燃烧等级(UL-94)可达Ⅴ-0级,极限氧指数(LOI)高达31.2％,在空气中600℃时残留质量提高至23.2％.