Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions--颗粒学报PARTICUOLOGY

Wang, H., Feng, X., Shi, Y., & Lu, X. (2007). Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions. China Particuology, 5(6), 414–419. https://doi.org/10.1016/j.cpart.2007.08.003

Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions

Huaiyuan Wang ^a, Xin Feng ^a *, Yijun Shi ^a, Xiaohua Lu ^a

a State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

10.1016/j.cpart.2007.08.003

Volume 5, Issue 6, December 2007, Pages 414-419

Received 8 May 2007, Accepted 8 August 2007, Available online 19 November 2007.

E-mail: xfeng@njut.edu.cn

Highlights

Abstract

The friction and wear behavior and mechanism as well as the mechanical properties of polytetrafluoroethylene (PTFE) composites filled with potassium titanate whiskers (PTW) and short carbon fibers (CF) under dry, wet and alkaline conditions were investigated. Experiments indicated that owing to appropriate cooling and boundary lubricating effects, the filled PTFE composites showed much lower frictional coefficient and better wear resistance under alkaline than dry and wet sliding conditions. The wear resistance of carbon-fiber-filled PTFE was much better than that of potassium titanate-whisker-filled PTFE composites in water. Results also showed that the transfer film on counterpart rings was significantly hindered by water and alkali. Hydrophilic-filler-reinforced PTFE composites yield higher wear rate when sliding under water.

Graphical abstract

Keywords

PTFE composites; Whiskers; Carbon fibers; Friction and wear properties; Alkaline solution

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