利用微脱粘法、三点弯曲法、扫描电镜(SEM)、力调制模式原子力显微镜(AFM)和动态力学热分析(DMTA)研究了甲基丙烯酰氧基倍半硅氧烷(Methacryl-POSS)涂层改性前后的碳纤维增强的聚芳基乙炔(PAA)复合材料的界面性能.用Wilhelmy法研究了处理前后的碳纤维与PAA树脂的浸润性.结果表明:POSS涂层处理后的碳纤维表面粗糙度增大,与PAA树脂的浸润性提高;复合材料的界面剪切强度提高了36%,层间剪切强度提高了50%.DMTA图谱表明,POSS涂层改性后,复合材料的玻璃化转变温度提高了12℃,损耗因子降低了53%,表明复合材料的界面粘接性能得到大幅度的改善.
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