多壁碳纳米管/聚酰亚胺多孔保持架材料的制备及性能研究  

Preparation and Properties of Multi-Walled Carbon Nanotubes/Polyimide Porous Cage Material

作　　者：李媛媛[1,2] 李柯颖 尚晓辉 陈鑫宇 孙小波 LI Yuanyuan;LI Keying;SHANG Xiaohui;CHEN Xinyu;SUN Xiaobo(Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;Henan Key Laboratory of High Performance Bearing Technology,Luoyang 471039,China)

机构地区：[1]洛阳轴承研究所有限公司,河南洛阳471039 [2]河南省高性能轴承技术重点实验室,河南洛阳471039

出　　处：《轴承》2025年第4期86-91,共6页Bearing

摘　　要：基于碳纳米管优异的性能,通过机械混合法用多壁碳纳米管(MWCNTs)对聚酰亚胺(PI)进行填充,再经冷压烧结得到多孔聚酰亚胺(PPI)保持架材料,对其微孔性能、力学性能以及摩擦学性能进行测试。结果表明:MWCNTs独特的多层管状结构有利于PPI复合材料孔结构的生成;相较于纯PPI,含1.0%MWCNTs的PPI保持架材料耐磨性能明显提高,磨损深度降低了48.4%,磨痕宽度和磨损率分别降低了27.3%和64.8%。将该材料加工成保持架,装配至轴承进行跑合测试,保持架性能优异,轴承组件运行稳定。Based on excellent properties of carbon nanotubes,the polyimide(PI)is filled with multi-walled carbon nanotubes(MWCNTs)by mechanical mixing method,and then the porous polyimide(PPI)cage material is obtained by cold pressing sintering.The microporous properties,mechanical properties and tribological properties of the material are tested.The results show that the unique multi-layer tubular structure of MWCNTs is beneficial to formation of pore structure of PPI composite;compared with pure PPI,the wear resistance of the material containing 1.0%MWCNTs is significantly improved,the wear depth is reduced by 48.4%,the wear scar width and wear rate are reduced by 27.3%and 64.8%,respectively.The material is processed into a cage,and the cage is assembled into a bearing for running-in test.The cage has excellent performance,and the bearing assembly runs stably.

关 键 词：滚动轴承 保持架 碳纳米管 聚酰亚胺 孔径 磨损率 

分 类 号：TH133.33[机械工程—机械制造及自动化] TQ323.7[化学工程—合成树脂塑料工业]