Page 14 - 《摩擦学学报》2020年第6期

第 40 卷 第 6 期 摩 擦 学 学 报 Vol 40 No 6
2020 年 11 月 Tribology Nov, 2020

DOI: 10.16078/j.tribology.2020030

表面织构对PTFE复合材料摩擦

磨损行为的影响

1
2*
1,2
高 贵 , 龚 俊 , 李瑞红 , 王宏刚 , 任俊芳 , 陈生圣 2
1*
2
(1. 兰州理工大学 机电工程学院，甘肃 兰州 730050;
2. 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)
摘 要: 为了研究表面织构对聚四氟乙烯(PTFE)复合材料摩擦磨损性能的影响规律及其作用机理，采用BBD响应面
法对试验进行设计与分析，利用LSR-2M往复摩擦试验机测试了复合材料的摩擦学性能，建立了织构参数与摩擦系
数和体积磨损率之间的二次回归模型，研究了槽宽、间距和角度参数及其交互作用对复合材料摩擦学性能的影响.
结果表明：二次回归模型显著，拟合精度分别为82.9%和83.2%，预测出槽宽323.2 μm、间距295.4 μm、角度88.7°时摩
−5
3
擦系数存在最小值0.147，槽宽331.1 μm、间距307.6 μm、角度87.6°时体积磨损率存在最大值8.11×10 mm /(Nm)；织
构增大了初始摩擦系数和体积磨损率，但有利于储存磨屑，在接触应力作用下磨屑中的纳米粒子与槽底及侧面的
粗糙峰形成了机械互锁，提高了磨屑的附着力，促进了转移膜的生成.
关键词: BBD-响应面法; PTFE复合材料; 表面织构; 摩擦转移机理; 转移膜
中图分类号: TH117.1 文献标志码: A 文章编号: 1004-0595(2020)06–0697–10

Effect of Surface Texture on Friction and Wear

Behavior of PTFE Composites

2
2*
1,2
1*
1
GAO Gui , GONG Jun , LI Ruihong , WANG Honggang , REN Junfang , CHEN Shengsheng 2
(1. School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Gansu Lanzhou 730050, China
2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics,
Chinese Academy of Sciences, Gansu Lanzhou 730000, China)
Abstract: In order to study the effect of counterpart surface texture on the friction and wear properties of PTFE
composites and its mechanism, the BBD Response Surface Method was used to design the tests and analyze the test data,
and the LSR-2M reciprocating friction tester was used to conducte the tests. After that a quadratic regression model
between texture parameters and friction coefficient/volume wear rate was established. The effects of groove width,
groove spacing, friction angle and their interaction on the tribological properties of the composites were investigated.
The results showed that the quadratic regression model was significant, and the fitting accuracy reached 82.85% and
83.21%. It was predicted that the friction coefficient had a minimum value of 0.147 when the groove width was 323.2 μm,
−5 3
the groove spacing was 295.4 μm, the angle was 88.7°. The volume wear rate had a maximum value of 8.11×10 mm /(Nm)
when the groove width was 331.1 μm, the groove spacing was 307.6 μm and the angle was 87.6°. Surface texture
increased the initial friction coefficient and the volume wear rate, but it was beneficial to the storage of the wear debris.
Under the action of contact stress, a strong mechanical interlocking force was formed between the nanoparticles
contained in the debris and the rough peaks at the bottom and sides of the groove, which improved the adhesion of the

Received 23 February 2020, revised 27 June 2020, accepted 28 June 2020, available online 28 November 2020.
*Corresponding author. E-mail:gongjjdxy@sohu.com, Tel:+86-13609351341; E-mail: hgwang@licp.cas.cn, Tel: +86-13919247704.
The project was supported by the National Natural Science Foundation of China (51675509).
国家自然科学基金项目(51675509)资助.