CF/PPEK、CF/PPES单向板的制备工艺和力学性能研究  

Processing and mechanical properties of CF/PPEK and CF/PPES unidirectional compound plates

作　　者：刘文 王荣国[2] 矫维成[1] 谢怀勤[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001 [2]哈尔滨工业大学复合材料研究所,黑龙江哈尔滨150001

出　　处：《高科技纤维与应用》2004年第3期19-23,共5页Hi-Tech Fiber and Application

基　　金：黑龙江省青年基金资助项目(QC01C05);哈尔滨工业大学校科学研究基金资助项目(HIT2000.71)

摘　　要：本文研究了碳纤维增强杂萘联苯聚醚酮(CF/PPEK)和碳纤维增强杂萘联苯聚醚砜(CF/PPES)2 种 　复合材料单向板的预浸热压成型工艺,对制备的单向板进行了力学性能试验研究,并利用 X 射线光电子能 谱(XPS)和扫描电子显微镜(SEM)对这两种复合材料的界面状态和结构进行了分析。研究表明,由于 PPEK和 PPES 分子结构的特点,使其具有良好的韧性和高温性能,且可与碳纤维形成良好的复合界面,从而有效地缓解应力集中,提高其复合材料的力学性能,并具有良好的成型加工特性,同时,在 250℃ 高温条件下的拉伸和弯曲强度和模量保留率均达到 60% 以上,这些结果为进一步研究和应用这种高性能热塑性复合材料提供了一定的参考依据。In this paper pre-impregnated hot compression molding process of the CF/PPEK and CF/PPES unidirectional compound plates were studied and mechanical properties of prepared unidirectional composites were discussed by experiment. And interfacial state and structure of theses kinds composites were studied using X-ray photoelectron spectroscopy (XPS) and scan electron microscope (SEM). Study proved that PPEK and PPES had very good toughness and high temperature integrity due to the characteristics of their molecule structures which provide good toughness and high temperature properties and can form good composite interface with carbon fiber. And this could relax stress concentration effectively and improve the mechanical properties of their composites and so the composites had good molding processing characteristics. Meanwhile the holding ratio of tensile and bending properties of CF/PPEK and CF/PPES under high temperature (250℃) could reach up to 60%. The results would be helpful for further development and application of high performance thermoplastic composites.

关 键 词：碳纤维增强杂萘联苯聚醚酮 碳纤维增强杂萘联苯聚醚砜 复合材料单向板 预浸热压成型 工艺参数 力学性能 复合界面 

分 类 号：TQ330[化学工程—橡胶工业]