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

IF 6.9 2区材料科学 Q2 CHEMISTRY, PHYSICAL Applied Surface Science Pub Date : 2025-06-01 Epub 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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金属纳米颗粒- pda界面改性及其对PTFE自润滑涂层摩擦学性能影响的研究

本研究分别采用聚多巴胺（PDA）和不同的PDA + 金属纳米粒子（PDA + MNPs, M = Ag或Cu）对PTFE/Cu涂层材料进行界面改性。然后，研究了不同界面改性处理对PTFE/Cu涂层材料导热系数、界面结合力和摩擦学性能的影响。结果表明，在PDA界面改性层中加入金属纳米粒子，明显促进了PDA与PTFE涂层之间的化学交联反应，提高了涂层的界面结合力。此外，PDA + MNPs界面改性后的PTFE/Cu涂层材料的导热性也有所提高。经PDA + AgNPs和PDA + CuNPs界面改性后的PTFE/Cu涂层材料的耐久性分别提高了34 %和48 %，耐磨性分别提高了47 %和115 %，这是因为它们具有良好的界面结合、消散摩擦热和传递膜形成能力。

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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.