Comparative study of tribological properties of insulated and conductive polyimide composites  

作　　者：Jingfu SONG Yuanhao YU Gai ZHAO Jinhao QIU Qingjun DING 

机构地区：[1]College of Material Science and Technology,Narijing Universiy of Aeronautics andAstronautics,Nanjing 210016,China [2]Slate Key Laboratory of Mechanics and Control of Mechanical Sructures,Nanjing University of Aeronauties and Astronautics,Nanjing 210016,China

出　　处：《Friction》2020年第3期507-516,共10页摩擦（英文版）

基　　金：This work is supported by the Fundamental Research Funds for the Central Universities(NS2018010);the Major State Basic Research Development Program of China(973 Program,Grant No.2015CB057501)。

摘　　要：Insulated polyimide(PI)composites filled with short glass fibers(SGF),polytetrafluoroethylene(PTFE),SiO2,and polyphenylene(PPL)are specially designed,prepared,and the tribological properties are systematically investigated with references to the special requirements for frictional materials used in ultrasonic motors.The hardness and thermal decomposition temperature of the insulated PI composites are comparable to that of conductive PI composites.However,these insulated materials present excellent friction and wear performance,especially under high loads and speeds.Scanning electron microscopy(SEM)analysis of the worn surface indicates that adhesive and fatigue wear dominate the wear mechanisms.

关 键 词：polyimide composites INSULATION FRICTION WEAR 

分 类 号：TB332[一般工业技术—材料科学与工程]