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首先用γ-环氧丙氧基三甲氧基硅烷(KH-560)和亚磷酸二乙酯(DEP)反应的中间产物进行水解缩合反应,合成了一种含磷低聚硅氧烷杂化物.并用FTIR,NMR,GPC对其结构及分子量进行了表征.然后将含磷低聚硅氧烷引入到双酚A环氧树脂(E-54)制备硅磷杂化物环氧树脂的固化物.对这种含硅磷杂化物环氧树脂固化物的性能研究发现其极限氧指数为23～29,DSC分析结果玻璃化转变温度(Tg)可以达到204℃,失重5%的温度(Td)5%比纯E-54提高近20℃.该固化物具有阻燃性能,同时具有较好的热性能。
First, an intermediate containing phosphoglyceryl trimethoxysilane (KH-560) and diethyl phosphite (DEP) was subjected to hydrolysis and condensation reaction to synthesize a phosphorus-containing oligosiloxane hybrid. And its structure and molecular weight were characterized by FTIR, NMR and GPC.The phospholipid oligosiloxane was then introduced into bisphenol A epoxy resin (E-54) to prepare the cured product of silicon-phosphorus hybrid epoxy resin. The results show that the limit oxygen index is 23 ~ 29, the glass transition temperature (Tg) of DSC analysis can reach 204 ℃, the temperature 5% weight loss of Td (Td) Compared to pure E-54 increased by nearly 20 ℃. The cured product has flame retardant properties, while having good thermal properties.