中国塑料 ›› 2009, Vol. 23 ›› Issue (03): 28-31 .DOI: 10.19491/j.issn.1001-9278.2009.03.006

• 材料与性能 • 上一篇    下一篇

纳米SiC及其与石墨、二硫化钼填充PTFE基复合材料摩擦磨损性能研究

路琴 杨明   

  1. 南京农业大学工学院机械工程系
  • 收稿日期:2008-10-29 修回日期:1900-01-01 出版日期:2009-03-26 发布日期:2009-03-26

Friction and Wear Properties of PTFE Composites Filled with Nano-SiC,Nano-SiC/Graphite and Nano-SiC/MoS2

  • Received:2008-10-29 Revised:1900-01-01 Online:2009-03-26 Published:2009-03-26

摘要: 用摩擦磨损试验机对纳米碳化硅(SiC)及其与石墨、二硫化钼(MoS2)混合填充聚四氟乙烯(PTFE)复合材料在干摩擦条件下与45#钢对磨时摩擦磨损性能进行了研究,用洛氏硬度计对PTFE及其复合材料的硬度进行了测量,用扫描电子显微镜对PTFE复合材料磨损表面进行了观察。结果表明,纳米SiC的加入能提高PTFE复合材料的硬度和耐磨性,纳米SiC与MoS2混合填充会使PTFE复合材料的耐磨性提高更多,特别是在载荷增大时其耐磨效果更好。纳米SiC填充PTFE复合材料的摩擦因数比纯PTFE大,且随载荷增加有所减小, MoS2、石墨的加入可降低PTFE的摩擦因数。

关键词: 纳米碳化硅, 石墨, 二硫化钼, 聚四氟乙烯, 摩擦, 磨损

Abstract: The friction and wear properties of PTFE composites filled with nano-SiC, nano-SiC-graphite or nano-SiC- MoS2 against 45# steel under dry conditions were studied using MM-200 wear tester. The hardness of the materials was examined using HR-150A, the frictional surface was observed using scanning electron microscope (SEM). It showed that the addition of nano-SiC increased the wear resistance and hardness of PTFE. When a mixture of nano-SiC and MoS2 was used, the wear resistance of PTFE was remarkably enhanced, especially at high loads. The friction coefficient of nano-SiC filled PTFE decreased with increasing load, which could further reduced by introducing MoS2 and graphite.

Key words: nano-carborundum, graphite, molybdenum, polytetrafluoroethylene, friction, wear