中国塑料 ›› 2025, Vol. 39 ›› Issue (7): 12-16.DOI: 10.19491/j.issn.1001-9278.2025.07.003

• 材料与性能 • 上一篇    下一篇

辐照改性对聚四氟乙烯结构和耐磨性研究

黄庚1, Bekbolatovich Sagin Abay1, 吴大鸣1,2, 王晓杰1, 高小龙1, 孙靖尧1,2, 黄尧1, 许红1, 郑秀婷1()   

  1. 1.北京化工大学机电工程学院,北京 100029
    2.有机无机复合材料国家重点实验室,北京 100029
  • 收稿日期:2024-08-04 出版日期:2025-07-26 发布日期:2025-07-22
  • 通讯作者: 郑秀婷(1974-),讲师,研究方向为聚合物复合材料的制备,zhengxting@163.com
    E-mail:zhengxting@163.com

Study on structure and wear resistance of PTFE modified by irradiation

HUANG Geng1, Bekbolatovich Sagin Abay1, WU Daming1,2, WANG Xiaojie1, GAO Xiaolong1, SUN Jingyao1,2, HUANG Yao1, XU Hong1, ZHENG Xiuting1()   

  1. 1.College of Electromechanical Engineering,Beijing University of Chemical Technology,Beijing 100029,China
    2.State Key Laboratory of Organic and Inorganic Composites,Beijing 100029,China
  • Received:2024-08-04 Online:2025-07-26 Published:2025-07-22
  • Contact: ZHENG Xiuting E-mail:zhengxting@163.com

摘要:

采用了熔点以上温度的γ射线辐照改性技术,对聚四氟乙烯(PTFE)进行辐照改性,研究辐照改性对PTFE耐磨性的影响。使用差示扫描量热仪(DSC)、扫描电子显微镜(SEM)、广角X射线衍射仪(XRD)、傅里叶变换红外光谱测试仪(FTIR)和摩擦磨损实验机设备,对辐照前后材料的结晶结构和摩擦磨损特性进行了研究。结果表明,该辐照改性技术显著提高了PTFE的结晶度,改性后的PTFE在一定的测试条件下耐磨性提高了约3.31倍,摩擦系数降低了约78 %,表现出了很好的耐磨性能。

关键词: 聚四氟乙烯, 辐照改性, 结晶结构, 摩擦磨损性能

Abstract:

This study reported an investigation on the effects of gamma⁃ray irradiation modification above the melting point on the wear resistance of polytetrafluoroethylene (PTFE). The crystalline structure and tribological properties of PTFE before and after irradiation were characterized using differential scanning calorimetry, scanning electron microscopy, X⁃ray diffraction, Fourier⁃transform infrared spectroscopy, and tribological testing. Results demonstrated that irradiation significantly enhanced PTFE's crystallinity. Under optimized conditions, the modified PTFE exhibits a 3.31⁃fold improvement in wear resistance and a 78 % reduction in friction coefficient, demonstrating superior tribological performance.

Key words: polytetrafluoroethylene, irradiation modification, crystal structure, friction and wear property

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