›› 2024, Vol. 38 ›› Issue (6): 66-71.

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PTFE纤维等离子体表面改性及机理研究

马义蘅1,王建勇2   

  1. 1. 华中科技大学
    2. 上海市轴承技术研究所有限公司
  • 收稿日期:2023-10-25 修回日期:2023-09-27 出版日期:2024-06-26 发布日期:2024-06-26

Study on plasma surface modification and mechanism of PTFE fiber

  • Received:2023-10-25 Revised:2023-09-27 Online:2024-06-26 Published:2024-06-26

摘要: 通过接触角的测试试验、单丝拔出试验和剥离强度试验研究了聚四氟乙烯(PTFE)纤维等离子表面改性的效果,通过扫描电子显微镜(SEM)、红外光谱(FTIR)、X射线光电子能谱(XPS)等分析设备或方法对样品进行分析研究。结果表明,PTFE纤维等离子表面改性后材料之间的相容性和结合力更高,性能更加优越;界面剪切强度随着时间的增加呈现出先增加后减少的变化规律,效果随着放置时间的增加逐渐变弱,24 h后,改性效果失效。

关键词: 聚四氟乙烯, 等离子体, 表面改性, 反应机理

Abstract: In this paper, the effect of plasma surface modification of PTFE fibers was investigated through contact angle, monofilament pull-out, and peel strength measurements. The obtained samples were analyzed by means of scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The results indicated that the plasma surface modification of PTFE fibers promoted higher compatibility and higher adhesion between materials, thus resulting in better performance. The modified PTFE fibers showed an increase in the interface shear strength at first and then decreased with an increase in the time. Such an effect weakened gradually with an increase in the placement time, leading to a failure in the modification effect failed after 24 h.

Key words: polytetrafluoroethylene, plasma, surface modification, reaction mechanism