不同填料增强Ekonol/PTFE复合材料力学性能和摩擦学性能的研究

PTFE

不同填料增强Ekonol/PTFE复合材料力学性能和摩擦学性能的研究
蔡立芳[1] 梁新[2] 董华东[3] 黄承亚[4][1]郑州轻工业学院河南省表界面科学重点实验室 [2]华南理工大学材料科学与工程学院 河南郑州 [3]河南郑州 [4]广东广州

摘　要:研究了不同的无机填料对Ekonol/PTFE复合材料的力学性能和摩擦学性能的影响,用扫描电子显微镜观察了复合材料磨损后的表面形貌,并探讨了其磨损机制。结果表明:无机填料的加入改善了Ekonol/PTFE复合材料的力学性能和抗磨损性能。添加石墨与MoS2的Ekonol/PTFE复合材料的力学性能最好,当石墨与MoS2的质量分数为5%和3%时,复合材料的力学性能达到最佳值,拉伸强度提高了34%,弯曲强度提高了62%,弯曲模量提高了75%;添加石墨的Ekonol/PTFE复合材料的抗磨损性能最好,磨损体积最大减少了42%,且受外界条件变化的影响较小。SEM分析表明:在低速低载荷下,复合材料主要以粘着磨损为主;在高速高载荷下,主要以磨粒磨损为主。

关键词:聚四氟乙烯 Ekonol 复合材料 填料
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Key wordsTFE; Ekonol; composite material; fillers;