Preparation and tribological behaviors of polyamide-imide/polytetrafluoroethylene lubricating coatings reinforced by in-situ synthesized CeO2 nanoparticles. (April 2021)

• Record Type: Journal Article
• Authors: Zhao, Zhicheng; Ma, Yanjun; Wan, Hongqi; Ye, Yinping; Chen, Lei; Zhou, Huidi; Chen, Jianmin
• Is Part Of: Polymer testing. Volume 96(2021)
• Publication Date: 2021-04
• Subjects: In-situ synthesis -- CeO2 nanoparticles -- PTFE -- Tribological behaviors; Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2021.107100
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: CeO2 nanoparticles prepared by the in-situ synthesis method were used to strengthen the polyamide-imide/polytetrafluoroethylene (PAI/PTFE) lubricating coatings. The crystalline phases and micro-structure of the lubricating coatings were characterized by XRD and SEM. A CSM friction machine was used to test the tribological properties of the coatings. The experimental results showed that CeO2 nanoparticles synthesized in-situ in the PAI/PTFE coatings had good dispersion and a narrow range of particle size (about 80 nm–110nm). The addition of CeO2 nanoparticles could effectively promote the micro-hardness and anti-wear performance of the coatings. Furthermore, the PAI/PTFE lubricating coating filled with 5 wt% CeO2 nanoparticles exhibited superior micro-hardness and wear resistance. In practical applications, The PAI/PTFE lubricating coating filled with 5 wt% CeO2 nanoparticles is more suitable for high max sliding velocity and low applied load. Highlights: In-situ CeO2 nanoparticles with good dispersion were synthesized in the PAI/PTFE lubricating coating. The PAI/PTFE lubricating coating filled with 5 wt.% CeO2 nanoparticles has superior wear resistance. The PAI/PTFE lubricating coating is more suitable for high max sliding velocity and low applied load in applications.