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利用MM - 2 0 0 0型摩擦磨损试验机研究了不同体积含量的纳米氧化锌 (ZnO)填充的PTFE基复合材料在干摩擦条件下与不锈钢对摩时的摩擦学性能 ,并利用扫描电子显微镜 (SEM)对PTFE及纳米ZnO/PTFE复合材料的微观结构、磨损表面和转移膜进行了观察和分析。结果表明 ,纳米ZnO/PTFE复合材料的摩擦性能与纯PTFE基本相当 ,但耐磨性明显优于后者 ,纳米ZnO在复合材料中的最佳含量为 15vol %左右。
The tribological properties of PTFE composites filled with nano-ZnO with different volume contents and stainless steel were investigated by MM-2000 friction and wear testing machine. The tribological properties of the composites were characterized by scanning electron microscopy (SEM) The microstructure, wear surface and transfer film of PTFE and nano-ZnO / PTFE composites were observed and analyzed. The results show that the tribological properties of nano-sized ZnO / PTFE composites are almost the same as that of pure PTFE, but their wear resistance is obviously better than the latter. The optimum content of nano-ZnO in the composites is about 15vol%.