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Open Access Tribological properties of self-reinforced ultra-high molecular weight polyethylene composites

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In this paper, high strength and high modulus UHMWPE fiber into UHMWPE powder was added into UHMWPE powder to gain a series of ultra-high molecular weight polyethylene (UHMWPE) self-reinforced modification composites by hot pressing. Friction and wear behaviors were evaluated on M-2000 tester. The results show that the friction coefficient of the fiber-UHMWPE composites is lower than pure UHMWPE, with a minimum value of 0.250 of reinforced samples with 50 wt% content of long fiber. The samples with 50 wt% content of fiber also show a better performance on wear resistance than others with the wear rate of 1.886 × 10–7mg ˙ m –1N–1. SEM morphology of worn surface reveals that adhesive wear is the main wear mechanism for pure UHMWPE which also has a small size of wear debris. Correspondingly, the wear pattern of fiber-UHMWPE composites is fatigue wear and big size of wear debris is formed during the sliding process.

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Keywords: ARTIFICIAL JOINTS; FRICTION; SELF-REINFORCEMENT; UHMWPE; UHMWPE FIBER; WEAR

Document Type: Research Article

Publication date: April 1, 2015

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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