PEK-PPI/CF耐磨复合材料的制备与性能  

Preparation and properties of PEK-PPI/CF wear-resistant composites

作　　者：王向地 孙雁宾 王志超 夏英 王书唯 王志鹏 李晓丹[3] WANG Xiangdi;SUN Yanbin;WANG Zhichao;XIA Ying;WANG Shuwei;WANG Zhipeng;LI Xiaodan(School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116034,China;Division of Energy Materials,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;Lequn Campus of the First Hospital of Jilin University,Changchun 130021,China)

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034 [2]中国科学院大连化学物理研究所能源材料部,辽宁大连116023 [3]吉林大学第一医院乐群院区,吉林长春130021

出　　处：《大连工业大学学报》2025年第2期92-97,共6页Journal of Dalian Polytechnic University

基　　金：辽宁省教育厅高等学校基本科研项目(J202104);吉林省科技发展计划项目(20210101289JC)。

摘　　要：以无定形聚芳醚酮(PEK-PPI)为基体树脂,碳纤维(CF)为耐磨填料,采用球磨机粉末共混法和高温模压法制备了PEK-PPI/CF耐磨复合材料,探究了碳纤维长度和含量对PEK-PPI/CF复合材料摩擦磨损性能和力学性能的影响。研究结果表明,碳纤维的引入有利于转移膜的形成,摩擦系数降低,同时可以有效提升PEK-PPI/CF复合材料的耐磨性能。碳纤维越长、含量越高,PEK-PPI/CF复合材料的体积磨损率越低,耐磨性越好。当碳纤维为50目、质量分数为40%时,复合材料体积磨损率达到最小值5.782×10^(-16),耐磨性较纯PEK-PPI树脂提升两个数量级。碳纤维加入后,复合材料的导热系数明显提高,便于摩擦点附近温度的扩散,有利于降低体积磨损率。Wear-resistant PEK-PPI/CF composites were prepared using amorphous poly(aryl ether ketone)(PEK-PPI)as the matrix resin and carbon fiber(CF)as the wear-resistant filler through the ball-milling and high temperature molding methods.The effects of carbon fiber length and content on the friction and wear properties and mechanical strength of the composites were investigated.The results indicated that the incorporation of carbon fiber displayed a positive impact on the formation of transferring film and a reduction in the friction coefficient,thus effectively enhanced the wear-resistant properties of PEK-PPI/CF composites.The wear-resistant properties of the composites were enhanced with the length and content of carbon fiber increasing.When the dimension of carbon fiber was 50 mesh and its content was 40%,the volume wear rate of the composites was lowest to 5.782×10^(-16),whose wear resistance was improved by two orders of magnitude compared to pure PEK-PPI resin.The thermal conductivity of the composites was significantly improved by adding carbon fiber and was beneficial to the diffusion of temperature near the friction point,which eventually generate a reduced volumetric wear rate.

关 键 词：无定形聚芳醚酮 碳纤维 复合材料 耐磨材料 

分 类 号：TQ322.9[化学工程—合成树脂塑料工业]