Tribological behavior and energy dissipation characteristics of nano-Al_2O_3-reinforced PTFE-PPS composites in sliding system  

作　　者：曹文翰 龚俊 杨东亚 高贵 王宏刚 任俊芳 陈生圣 

机构地区：[1]School of Mechanical and Electrical Engineering,Lanzhou University of Technology [2]State Key Laboratory of Solid lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences

出　　处：《Journal of Central South University》2017年第9期2001-2009,共9页中南大学学报（英文版）

基　　金：Project(51165022)supported by the National Natural Science Foundation of China;Project(20122117)supported by the Lanzhou Science and Technology Bureau Foundation,China;Project(1310RJZA036)supported by the Natural Science Foundation of Gansu Province,China

摘　　要：Nanoparticles are increasingly being used to improve the friction and wear performance of polymers. In this study, we investigated the tribological behavior and energy dissipation characteristics of nano-Al_2O_3-reinforced polytetrafluoroethylenepolyphenylene sulfide(PTFE-PPS) composites in a sliding system. The tribological behaviors of the composites were evaluated under different normal loads(100–300 N) at a high linear velocity(2 m/s) using a block-on-ring tester. Addition of the nano-Al_2O_3 filler improved the antiwear performance of the PTFE-PPS composites, and the friction coefficient increased slightly. The lowest wear rate was obtained when the nano-Al_2O_3 content was 3%(volume fraction). Further, the results indicated a linear correlation between wear and the amount of energy dissipated, even though the wear mechanism changed with the nano-Al_2O_3 content, independent of the normal load applied.Nanoparticles are increasingly being used to improve the friction and wear performance of polymers. In this study, we investigated the tribological behavior and energy dissipation characteristics of nano-Al2O3-reinforced polytetrafluoroethylenepolyphenylene sulfide（PTFE-PPS） composites in a sliding system. The tribological behaviors of the composites were evaluated under different normal loads（100–300 N） at a high linear velocity（2 m/s） using a block-on-ring tester. Addition of the nano-Al2O3 filler improved the antiwear performance of the PTFE-PPS composites, and the friction coefficient increased slightly. The lowest wear rate was obtained when the nano-Al2O3 content was 3%（volume fraction）. Further, the results indicated a linear correlation between wear and the amount of energy dissipated, even though the wear mechanism changed with the nano-Al2O3 content, independent of the normal load applied.

关 键 词：NANO-AL2O3 polytetrafluoroethylene-polyphenylene sulfide （PTFE-PPS） tribological behavior dissipated energy 

分 类 号：TB332[一般工业技术—材料科学与工程]