CF/PPEK、CF/PPES复合材料高温力学性能研究  

High temperature mechanical properties of CF/PPEK and CF/PPES composites

作　　者：刘文博[1] 王荣国[2] 张洪涛[3] 贾近[1] 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 [3]哈尔滨工业大学科技园,黑龙江哈尔滨150001

出　　处：《材料科学与工艺》2004年第2期183-185,189,共4页Materials Science and Technology

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

摘　　要：采用预浸热压成型工艺制备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)单向复合材料试样,通过对试样在常温和高温条件下的力学性能测试与分析,研究了高性能热塑性复合材料在高温条件下力学性能及其强度和模量保留率的变化规律.实验表明,在250℃下其拉伸和弯曲强度及模量的保留率均在60%以上,仍具有极高的承载能力.利用Tr—n预测模型对这两种复合材料高温力学性能进行的预测结果与试验值基本吻合,从而验证了这个模型的可行性.Carbon fiber reinforced Poly (CF/PPEK) and carbon fiber reinforced Poly(CF/PPES) unidirectional composites specimens were prepared by the pre-impregnated hot compression molding process. And by testing and analyzing their mechanical properties under normal and high temperature, the mechanical properties and changing law of the holding ratio of the strength and modulus of the high performance thermoplastic composites under high temperature were studied. The experiment shows that the retention of extension strength, bending strength and their modulus are above 60% below the 250℃, which has super high loading capacity. The experimental results of high temperature mechanical properties of the composites were found basically identical with that predicted from T_r-n model.

关 键 词：CF/PPEK CF/PPES 高温力学性能 预测模型 保留率 热塑复合材料 碳纤维增强杂萘联苯聚醚酮 碳纤维增强杂萘联苯聚醚砜 

分 类 号：TB332[一般工业技术—材料科学与工程]