摘要
聚四氟乙烯(PTFE)作为一种特种工程塑料具有自润滑性优异、化学稳定性良好、使用温度范围广泛等诸多优点,但核心缺点是耐磨性差、易磨损,严重缩短其使用寿命。本文从PTFE分子结构特点出发,以转移膜理论为主线,深入分析了PTFE摩擦磨损机理及研究发展历程,综述了PTFE摩擦学改性方法,分析了表面改性、填充改性、共混改性及复合改性的常见方法,深入对比了这4类改性方法的内在机理,并总结了复合改性的发展趋势。最后,结合近年来的研究成果及在研究过程中存在的问题对PTFE摩擦学改性研究方向进行了展望,对转移膜的定量研究、多方式协同复合改性的工业化可行性、实际工况下的改性体系选择及应用等方面给出了建议。
Polytetrafluoroethylene(PTFE),as a special engineering plastic,has many advantages such as excellent self-lubricating properties,good chemical stability,and a wide range of operating temperatures.However,its core disadvantages are poor wear resistance and easy wear,which seriously shorten its service life.Starting from the structural characteristics of PTFE molecules,this article takes the transfer film theory as the main thread to deeply analyze the friction and wear mechanism of PTFE and the research and development process.It summarizes the tribological modification methods of PTFE,analyzes the common methods of surface modification,filling modification,and blending modification,compares the internal mechanisms of these three types of modification methods,and summarizes the development trend of composite modification.Finally,based on recent research achievements and existing problems in the research process,the research direction of PTFE tribological modification is discussed,some suggestions on the quantitative study of transfer film,the industrial feasibility of multimode type collaborative composite modification,the selection and application of modification system under actual working conditions are given.
作者
朱巧思
ZHU Qiaosi(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)
出处
《材料工程》
北大核心
2025年第6期87-104,共18页
Journal of Materials Engineering
基金
国家自然科学基金项目(51802296)。
关键词
聚四氟乙烯
摩擦学
转移膜
复合改性
polytetrafluoroethylene
tribology
transfer film
composite modification
