喷涂法制备PTFE基减摩耐磨涂层工艺参数的优化  

Optimization of Process Parameters for PTFE-Based Anti-friction and Wear-Resistance Coating Prepared By Spraying Method

作　　者：李迎春[1] 李庆林[1] 邱明[1] 张瑞[1] 

机构地区：[1]河南科技大学机电工程学院,洛阳471003

出　　处：《机械工程材料》2017年第9期73-76,共4页Materials For Mechanical Engineering

基　　金：河南省科技创新杰出人才计划项目(154200510013);河南省高校科技创新团队支持计划项目(13IRTSTHN025)

摘　　要：以环氧树脂为黏结剂,聚四氟乙烯(PTFE)为固体润滑剂,MoS_2为填料,采用空气喷涂法在GCr15钢基体上制备PTFE基减摩耐磨涂层,利用往复式摩擦磨损试验机测试了涂层的摩擦磨损性能,并采用正交试验法对固化温度、固化时间、喷枪压力等喷涂工艺参数进行了优化。结果表明:影响PTFE基减摩耐磨涂层摩擦学性能的喷涂工艺参数的主次顺序为喷枪压力、固化时间、固化温度;当固化温度为120℃、固化时间为60 min、喷枪压力为0.3 MPa时,涂层的平均摩擦因数为0.106,磨损体积为0.001 5mm^3,此时摩擦学性能最优。The PTFE-base anti-friction and wear resistance coating which used PTFE as solid lubricant, epoxy resin as binder and MoS2 as filler was prepared by air spraying method on GCrl5 steel substrate. The properties of friction and wear of coating were tested by reciprocating friction and wear tester. The orthogonal test approach was employed to optimize the curing temperature, curing time and the pressure of air spray gun. The results show that the primacy sequence of these factors affected the tribological properties of coating was pressure of air spray gun, curing time, curing temperature. When curing temperature was 120℃, curing time was 60 min and pressure of air spray gun was 0.3 MPa, the average frictional coefficient of coating was 0.106 and wear volume was 0.001 5 mm^3 that performed the excellent tribological properties.

关 键 词：聚四氟乙烯(PTFE) 涂层 摩擦因数 磨损体积 

分 类 号：TH117.1[机械工程—机械设计及理论]