Page 79 - 《摩擦学学报》2021年第4期

第 41 卷 第 4 期 摩 擦 学 学 报 Vol 41 No 4
2021 年 7 月 Tribology Jul, 2021

DOI: 10.16078/j.tribology.2020193

PTFE@SiO 核壳型添加剂在不同实验
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条件下的的水润滑性能

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王 娜 , 王宏刚 1,2,3* , 任俊芳 , 高 贵 , 陈生圣 , 赵更锐 , 杨亚文 , 王金清 1,2
(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 材料科学与光电技术学院，北京 100049;
3. 中国科学院 材料磨损与防护重点实验室，甘肃 兰州 730000)
摘 要: 采用原位聚合法制备了聚四氟乙烯@二氧化硅(PTFE@SiO 2 )复合粒子. 利用扫描电子显微镜(SEM)、透射电
子显微镜(TEM)、粒径分布仪以及傅立叶红外光谱仪(FTIR)对复合粒子的形貌、粒径分布和组成结构进行了分析.
结果表明：所制备的复合粒子呈核壳型复合结构，粒子尺寸处于亚微米级别. 分散性试验表明：该粒子在水中具有良
好的分散性和稳定性. 利用LSR-2M往复式摩擦磨损试验机测试了不同试验条件下复合粒子在水环境中的摩擦学性
能，结果表明：在常温、0.019 m/s滑动速率以及0.2 μm的钢盘粗糙度下，PTFE@SiO 2 润滑剂具有最佳的摩擦学性能；
相比于纯水和添加了PTFE/SiO 2 的润滑剂，其摩擦系数降低了近80%，磨损体积减小了1~2个数量级. 分析表明：
PTFE@SiO 2 复合粒子优异的水润滑性能主要与核壳结构的存在以及在摩擦过程中形成的高质量转移膜密切相关.
关键词: PTFE@SiO 2 ; 核壳结构; 水润滑; 添加剂; 摩擦学性能
中图分类号: TB34 文献标志码: A 文章编号: 1004-0595(2021)04–0522–10

Water Lubrication Properties of PTFE@SiO Particles as Novel
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Additive under Different Testing Conditions

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WANG Na , WANG Honggang 1,2,3* , REN Junfang , GAO Gui , CHEN Shengsheng ,
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ZHAO Gengrui , YANG Yawen , WANG Jinqing 1,2
(1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese
Academy of Sciences, Gansu Lanzhou 730000, China
2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of
Sciences, Beijing 100049, China
3. Key Laboratory of Science and Technology on Wear and Protection of Materials, Chinese
Academy of Science, Gansu Lanzhou 730000, China)
Abstract: Novel water lubricating additive of polytetrafluoroethylene@silica (PTFE@SiO 2 ) core-shell composite
particles with submicron size was prepared by in-situ polymerization. The core-shell structure, composition and size
distribution of the composite particles were determined by scanning electron microscope (SEM), transmission electron
microscope (TEM), Fourier transform infrared spectrum (FTIR) and particle size distribution, respectively. The water
dispersion test indicated that the as-synthesized particles had good water dispersibility and stability. The tribological
properties of the particles as water lubricating additive at different testing conditions was investigated by LSR-2M
reciprocating friction and wear testing machine. The results illustrated that the PTFE@SiO 2 lubricant had the best water

Received 9 September 2020, revised 7 November 2020, accepted 10 November 2020, available online 28 July 2021.
*Corresponding author. E-mail: hgwang@licp.cas.cn, Tel: +86-931-4968022.
This project was supported by the National Natural Science Foundation of China (51675509, 51675514).
国家自然科学基金项目(51675509，51675514)资助.