Page 12 - 《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.2020182

聚酰胺酰亚胺/聚四氟乙烯复合涂层的制备及

其摩擦学性能和耐腐蚀性能

1,2
1,2
1
1,2
1,2*
1,2
李桂花 , 冶银平 , 马彦军 , 万宏启 , 陈 磊 , 周惠娣 , 陈建敏 1,2
(1. 中国科学院材料磨损与防护重点实验室，中国科学院兰州化学物理研究所，甘肃 兰州 730000;
2. 材料与光电研究中心，中国科学院大学，北京 100049)
摘 要: 制备了具有良好摩擦学性能和优异耐腐蚀性能的聚酰胺酰亚胺/聚四氟乙烯(PAI/PTFE)多功能复合涂层. 采
用CSM摩擦磨损试验机评估了涂层的摩擦学性能，采用P4000A电化学工作站研究了PAI/PTFE复合涂层在质量分
数为3.5% NaCl溶液中的抗电化学腐蚀性能. 重点研究了PTFE与PAI的固体质量比对涂层摩擦学性能和耐腐蚀性能
的影响. 结果表明：适量PTFE的引入极大增强了PAI涂层的摩擦学性能和耐腐蚀性能. 特别是，当PTFE与PAI的固体
3
-6
质量比为0.6时，涂层的摩擦学性能最佳，摩擦系数为0.075，磨损率为3.72×10 mm /(N·m). 当PTFE与PAI的固体质
量比为1时，复合涂层在质量分数为3.5%的NaCl溶液中浸泡240 h后涂层的低频阻抗值∣Z∣ 0.01 Hz 高达3.83×10 Ω∙cm ，
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2
仍表现出较好的耐腐蚀性能. 此外，经过240 h中性盐雾试验，复合涂层表面没有出现起泡、生锈等现象. 复合涂层具
有如此优异的摩擦学性能和耐腐蚀性能归因于PTFE优异的润滑性能以及涂层对腐蚀介质阻隔性能的增强.
关键词: 聚四氟乙烯; 聚酰胺酰亚胺; 复合涂层; 耐腐蚀性能; 摩擦学性能
中图分类号: TG174.2; TG174.4 文献标志码: A 文章编号: 1004-0595(2021)04–0455–12

Preparation of Polyamideimide/Polytetrafluoroethylene

Composite Coatings and Its Tribological and

Anti-Corrosion Properties

1,2 1,2* 1 1,2 1,2
LI Guihua , YE Yinping , MA Yanjun , WAN Hongqi , CHEN Lei ,
1,2
ZHOU Huidi , CHEN Jianmin 1,2
(1. Key Laboratory of science and technology on wear and protection of materials, 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)
Abstract: Polyamideimide/polytetrafluoroethylene (PAI/PTFE) multifunctional composite coatings with good
tribological properties and excellent corrosion resistance were prepared. The CSM friction and wear tester was used to
study the tribological performances of the coatings, and the P4000A electrochemical workstation was used to measure
the electrochemical corrosion resistance of the PAI/PTFE composite coatings in 3.5% NaCl solution. The focus was on
the influence of the solid mass ratio of PTFE to PAI on the tribological properties and corrosion resistance of the
coatings. The results showed that the introduction of an appropriate amount of PTFE greatly enhanced the tribological
properties and corrosion resistance of the PAI coatings. In particular, when the solid mass ratio of PTFE to PAI was 0.6,
the coating exhibited the best tribological performances, as friction coefficient of 0.075 and wear rate of 3.72×
−6 3
10 mm /(N·m). When the solid mass ratio of PTFE to PAI was 1, the low-frequency impedance value of the composite
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9
coatings immersed in 3.5% NaCl solution for 240 h was as high as 3.83×10 Ω∙cm showing excellent corrosion

Received 26 August 2020, revised 9 November 2020, accepted 10 November 2020, available online 28 July 2021.
*Corresponding author. E-mail: yyp@licp.cas.cn, Tel: +86-13519668264.