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Open AccessArticle

PEEK Composites as Self-Lubricating Bush Materials for Articulating Revolute Pin Joints

1
The Leonardo Centre for Tribology, Department of Mechanical Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
2
School of Mechanical & Automotive Engineering, Nanyang Institute of Technology, Nanyang 473004, China
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(3), 665; https://doi.org/10.3390/polym12030665
Received: 10 February 2020 / Revised: 6 March 2020 / Accepted: 13 March 2020 / Published: 17 March 2020
(This article belongs to the Special Issue Reinforced Polymer Composites)
In this study, bearing bushes made of polyetheretherketone (PEEK), 30 wt % carbon fibre reinforced PEEK, 30 wt % glass fibre reinforced PEEK, each 10 wt % of PTFE, graphite and carbon fibre modified PEEK were investigated on a purpose built pin joint test rig. The unlubricated friction and wear behaviour was assessed in sliding contact with a 300M shaft, subjected to a nominal pressure of 93 MPa, articulating sliding speed of 45 °/s. The worn surface and the subsurface layer were studied using optical profilometry and scanning electron microscopy (SEM). Due to thermal sensitivity of PEEK composites, friction energy and temperature rise were analysed for determining the friction and wear mechanism. The bush made of PTFE, graphite and carbon fibre (each 10 wt %) modified PEEK presented the best performance for friction coefficient, wear loss, friction energy and temperature rise. Current work demonstrated that reinforcement modified PEEK composite possesses desirable properties to perform as a load bearing bush in certain tribological applications. View Full-Text
Keywords: PEEK composites; reinforcements; self-lubricating bush; friction and wear; pin joints PEEK composites; reinforcements; self-lubricating bush; friction and wear; pin joints
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MDPI and ACS Style

Zhu, J.; Xie, F.; Dwyer-Joyce, R.S. PEEK Composites as Self-Lubricating Bush Materials for Articulating Revolute Pin Joints. Polymers 2020, 12, 665.

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