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材料工程  2014 

国产T800级炭纤维表面特性及其复合材料微观界面性能

DOI: 10.11868/j.issn.1001-4381.2014.09.014, PP. 83-88

Keywords: T800炭纤维,复合材料,界面,上浆剂,湿热

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Abstract:

采用扫描电镜(SEM)、原子力显微镜(AFM)、X射线光电子能谱(XPS)等测试方法表征了两种国产上浆/去浆T800级炭纤维的表面特性,并通过单丝断裂实验测试了单丝复合体系微观界面剪切强度(IFSS),在此基础上研究了炭纤维表面特性对单丝复合体系微观界面性能及其耐湿热性能的影响。结果表明去浆后炭纤维表面含氧活性官能团含量降低,粗糙度增加,与基体树脂的界面结合强度增大;湿热环境对复合材料的微观界面性能影响显著,尤其是破坏了纤维/基体间的化学键合作用,但去湿后部分界面性能可恢复。

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