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将苯基三硅羟基倍半硅氧烷(T7)引入氰酸酯树脂(CE)和环氧树脂(EP)复合体系,制备了一系列CE/EP/T7复合材料。采用傅里叶红外光谱(FT-IR)、扫描电镜(SEM)、动态力学热分析(DMA)及热重分析(TGA)对复合材料的形态与性能进行了表征。结果表明,T7能均匀分散于树脂基体中,并参与了复合体系的固化反应;T7的加入有助于提高CE/EP材料的储能模量和玻璃化转变温度;含T7的CE/EP复合材料仍保持了优异的热稳定性,且在高温阶段的热分解残余量随着T7的含量增加而增大,有利于提高氰酸酯基复合材料的阻燃性能。
A series of CE / EP / T7 composites were prepared by introducing phenyltrisilysilsesquioxanes (T7) into cyanate resin (CE) and epoxy resin (EP) The morphology and properties of the composites were characterized by FT-IR, SEM, DMA and TGA. The results show that T7 can be uniformly dispersed in the resin matrix and participate in the curing reaction of the composite system. The addition of T7 helps to increase the storage modulus and glass transition temperature of the CE / EP materials. The T7-containing CE / EP composite The material still retains excellent thermal stability, and the pyrolysis residue at high temperature increases with the content of T7, which is beneficial to improve the flame retardancy of cyanate ester matrix composites.