Proton irradiation effects on the structural and tribological properties of polytetrafluoroethylene

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• 作者：Bai-xing Liu 刘百幸 ; Jun Liang ; Zhen-jun Peng…
• 关键词：Polytetrafluoroethylene ; Proton irradiation ; Degradation ; Friction and wear
• 刊名：Chinese Journal of Polymer Science
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：34
• 期：12
• 页码：1448-1455
• 全文大小：978 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Condensed Matter Physics
  Industrial Chemistry and Chemical Engineering
  Polymer Sciences
  Characterization and Evaluation of Materials
  
• 出版者：Chinese Chemical Society and Institute of Chemistry, CAS, co-published with Springer
• ISSN：1439-6203
• 卷排序：34

文摘

Polytetrafluoroethylene (PTFE) was irradiated with protons in a ground-based simulation facility to study the effects of proton irradiation on the structural and tribological properties of PTFE. The structural changes were characterized by X-ray photoelectron spectroscopy (XPS) and attenuated total-reflection FTIR (ATR-FTIR), while the tribological properties were evaluated by friction and wear tests. It was found that proton irradiation induced the degradation of PTFE molecular chains, resulting in the increase of C concentration and the decrease in F concentration on the sample surfaces, and the surface chemical structure and morphology of the samples changed, which affected the friction coefficient and decreased the wear rate of the specimens as the friction and wear tests revealed.