无机填料增强聚苯酯/ 聚四氟乙烯复合材料的力学和摩擦磨损性能

Mechanics| friction and wear properties of inorganic filled Ekonol/ PTFE composites

摘要: 采用石墨/ 二硫化钼填充改性聚苯酯/ 聚四氟乙烯复合材料, 研究了复合材料的力学性能和摩擦磨损性能。研究表明, 石墨和MoS₂ 的加入不仅能够很好地改善Ekonol/ PTFE 复合材料的力学性能, 使复合材料的拉伸强度、弯曲强度和硬度均有所提高, 而且还使Ekonol/ PTFE 复合材料的摩擦系数增加, 磨损体积减小, 耐磨性能显著提高。当Ekonol 含量为5 % , 石墨/ 二硫化钼总含量为8 %时, 拉伸强度、弯曲强度分别提高了31 %和41 % ,硬度值约提高了713 %。SEM 分析表明, Ekonol/ 石墨/ MoS₂ / PTFE 复合材料的磨损主要以粘着磨损为主。

Abstract: The mechanics , f riction and wear properties of graphite/ MoS₂ filled Ekonol/ PTFE composites werestudied. The result shows that the addition of graphite/ MoS₂ not only increases the mechanical properties ofEkonol/ PTFE composites , but also causes the f riction coefficient to increase , the wear volume to decrease , and theabrasive resistance to remarkably increase. When Ekonol and graphite/ MoS₂ mass f ractions are 5 % and 8 % , thetensile st rength and bend st rength of composites increase 31 % and 41 % , and the hardness increases 713 % too. Thewear mechanism of Ekonol/ graphite/ MoS₂ / PTFE composites is adhesive wear , as indicated by SEM analysis of theworn surface.