七苯基倍半硅氧烷三硅醇改性双马来酰亚胺纳米复合材料

Bismaleimide modified by heptamertic phenyl silsesquioxane trisilanol nanocomposites

通过熔融共聚法制备了七苯基倍半硅氧烷三硅醇(POSS-triol)/双马来酰亚胺(BMI)/二烯丙基双酚A(BA)纳米复合材料。利用扫描电镜(SEM)、透射电镜(TEM)、动态力学分析(DMA)及热重分析(TGA)对BMI复合材料的结构形态与热性能进行了研究。实验结果表明,POSS-triol粒子能均匀分散于树脂体系,POSS-triol的加入能明显地提高BMI复合材料的热性能,与纯BMI/BA树脂体系相比,含10%POSS-triol复合材料的玻璃化转变温度提高约12℃。随着POSS-triol的加入,复合材料的热分解温度也有了较大的提高。

A series of bismaleimide/diallybisphenol nanocomposites containing heptamertic phenyl silsesquioxane trisilanol （POSS-triol） were prepared by melting copolymerization. The structure and thermal properties of nanocomposites was investigated by SEM, TEM, DMA and TGA techniques. Results showed that POSS-triol particles can disperse into bismaleimide resin homogeneously and the addition of POSS-triol contributed to the improvement of thermal properties of composites. Compared with pure BMI/BA system, the glass transition temperature （Tg） of composite containing 10% POSS-triol was enhanced about 12℃. The thermal decompose temperature of composites improved significantly with the POSS-triol content increasing.