Page 198 - 《摩擦学学报》2021年第6期

第 41 卷 第 6 期 摩 擦 学 学 报 Vol 41 No 6
2021 年 11 月 Tribology Nov, 2021

DOI: 10.16078/j.tribology.2021005

钢-聚四氟乙烯摩擦界面的摩擦起电行为

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张立强 , 冯雁歌 , 李小娟 , 王楠楠 , 王道爱 1,3*
(1. 中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州 730000;
2. 中国科学院大学, 北京 100049;
3. 青岛市资源化学与新材料研发中心, 山东 青岛 266100)
摘 要: 作为界面摩擦中普遍存在的一种物理现象，摩擦起电由于其对摩擦界面的高度灵敏性而被广泛研究. 以钢-
聚四氟乙烯(PTFE)为研究对象，通过采集摩擦过程中的摩擦系数、钢球的接地电流以及PTFE的表面电势，对其摩擦
界面的起电行为进行了详细研究. 三种信号的波动幅值呈正相关性，反映了摩擦-摩擦起电的内在联系. 在钢-
PTFE的摩擦过程中，材料的转移诱导使得PTFE的表面电势在达到饱和值后会反向演化. 利用钢-PTFE摩擦副进入
稳定摩擦阶段的时间与摩擦电势的反向演化时间的关联性设计钢-PTFE或其他金属-聚合物摩擦副的摩擦状态监测
系统，对实现机械运动过程中的摩擦副运动原位监测和故障预警具有重要价值.
关键词: 钢-聚四氟乙烯; 摩擦起电; 表面电势; 电流; 极性反向演化; 摩擦监测
中图分类号: TH117.3 文献标志码: A 文章编号: 1004-0595(2021)06–0983–12

Triboelectric Behavior at the Friction Interface of Steel and
Polytetrafluoroethylene

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ZHANG Liqiang , FENG Yange , LI Xiaojuan , WANG Nannan , WANG Daoai 1,3*
(1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese
Academy of Sciences, Gansu Lanzhou 730000, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Qingdao Center of Resource Chemistry and New Materials, Shandong Qingdao 266100, China)
Abstract: As a ubiquitous physical phenomenon in the friction interface, triboelectrification has been widely studied due
to its high sensitivity to changes in the friction interface. Among them, the triboelectric behavior of metal-polymer
friction pairs has attracted much attention due to its wide application in industry and production. Especially in recent
years it has been discovered that there is a close relationship between triboelectricity and friction. Not only the friction
conditions affect the triboelectricity, but also the friction can be controlled by controlling the electrostatic charge on the
surface. Here, we’ve designed a test system that simultaneously collects both friction signals and electrical signals. By
collecting the friction coefficient, the current from the steel ball and the surface potential of polytetrafluoroethylene
(PTFE) during the friction process, the triboelectric behavior of steel-PTFE was systematically studied. The fluctuation
amplitude of the three signals presents a proportional relationship, which reflects the internal relationship between
friction and triboelectricity. This method of collecting multiple signals at the same time is a developing trend in the field
of on-line tribology monitoring in the future. In the complex friction interface, the motion of the friction pair had a great

Received 4 January 2021, revised 16 March 2021, accepted 16 March 2021, available online 28 November 2021.
*Corresponding author. E-mail: wangda@licp.cas.cn, Tel: +86-931-4968169.
This work was supported by the National Key Research and Development Program of China (2020YFF0304600), the program for
Taishan Scholars of Shandong Province (ts20190965) and the National Natural Science Foundation of China (51905518).
国家重点研发计划“科技冬奥”重点专项(2020YFF0304600), 山东省泰山学者计划(ts20190965)和国家自然科学基金项目
(51905518)资助.