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
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 梁新 董华东 黄承亚郑州轻工业学院河南省表界面科学重点实验室 华南理工大学材料科学与工程学院 河南郑州 河南郑州 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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The Influences of Different Fillers on Mechanical and Tribological Properties of Ekonol/PTFECai Lifang1 Liang Xin1 Dong Huadong1 Huang Chengya21.Keylab of Surface & Interface Science; Zhengzhou University of Light Industry; Zhengzhou Henan 450002; China; 2.Material Science and Engineering College; South China University of Technology; Guangzhou Guangdong 510640; China）;Abstract:The influence of different fillers on the properties of mechanical,friction and wear of Ekonol/PTFE composites was studied.The worn surface of the composite was investigated by SEM and the wear mechanism was discussed.The results show that inorganic fillers added into Ekonol/PTFE enhances the mechanical,friction and wear properties of Ekonol/PTFE.The Ekonol/PTFE composites fillede with graphite and MoS2 has the best mechanical properties,when the ratio of graphite to MoS2 is five to three,the mechanical pro...
Key words:PTFE; Ekonol; composite material; fillers;
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