采用环氧基倍丰硅氧烷(POSS)对双酚A型氰酸酯和环氧树脂共聚体系进行改性.系统研究了该固化体系的纳米粒子相分散状态、热性能以及力学性能、介电性能.当POSS含量为1%(质量分数)时,POsS以分子级分散在树脂基体中,该固化体系的热性能和机械性能均有明显提高,介电常数和介电损耗显著降低.随着POSS含量的提高,部分POSS以自聚和结晶的状态存在于聚合物中,体系的热性能和机械性能有所下降.
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