Effect of atomic oxygen irradiation on the structural and tribological characteristics of polytetrafluoroethylene and its composites

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• 作者：Xiangli Wang ; Baixing Liu ; Guoheng Zhang ; Liwei Liu ; Qiong Chen ; Wanjun Chen and Xiaoyong Li
• 刊名：Surface and Interface Analysis
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：49
• 期：2
• 页码：112-116
• 全文大小：664K
• ISSN：1096-9918

文摘

Based on the ground-based simulation facility, the effects of atomic oxygen (AO) irradiation on the structural and tribological properties of pure polytetrafluoroethylene (PTFE) and carbon fiber and MoS₂-filled PTFE composites were studied by scanning electron microscopy, X-ray photoelectron spectroscopy, and a ball-on-disc tribometer. The results shown that AO irradiation had significant effects on the structural and tribological properties of pure PTFE, in which the surface morphologies, mass loss, friction coefficient, and wear rate had been changed greatly after AO irradiation. However, it was noticeable that the addition of carbon fiber and MoS₂ filler to PTFE could improve the AO resist capacity and tribological properties of PTFE composites significantly. Copyright