Study on metal nanoparticles-PDA interface modification and its effect on the tribology behavior of PTFE self-lubricating coating materials

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL Applied Surface Science Pub Date : 2025-02-28 DOI:10.1016/j.apsusc.2025.162839

Lihua Fu , Bicong Fu , Meng Zhou , Sanming Du , Yongzhen Zhang , Qiongfei Shan , Lvdong Hua , Zhen Ding , Guofeng Zhang

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Abstract

In this study, the PTFE/Cu coating materials has been interface modified by using polydopamine (PDA) and different PDA + metal nanoparticles (PDA + MNPs, M = Ag or Cu), respectively. Then, the effects of different interface modification treatments on the thermal conductivity, interface bonding force and tribological properties of the PTFE/Cu coating materials were investigated. The results showed that the addition of metal nanoparticles to PDA interface modified layer obviously promoted the chemical cross-linking reaction between the PDA and PTFE coatings and improved the interface bonding force of the coatings. Also, the thermal conductivity of the PTFE/Cu coating materials with PDA + MNPs interface modification is improved. The durability of PTFE/Cu coating materials with PDA + AgNPs and PDA + CuNPs interface modification increased 34 % and 48 % respectively, and their wear resistance increased 47 % and 115 % respectively, because of their good interface bonding, dissipate frictional heat and transfer film forming ability.

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.