Journal
WEAR
Volume 268, Issue 7-8, Pages 1030-1036Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2009.12.032
Keywords
Polymers; Sliding friction; Tribophysics
Funding
- Faculty of Engineering, NUS [R-265-000-248-112]
- Graduate School of Engineering, NUS
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The relationship between initial coefficient of friction, A, and surface energy (or attractive force) for ultra-high molecular weight polyethylene (UHMWPE) film is modeled and experimentally measured at low normal loads (15-75 mN) The results show that the initial coefficient of friction increases exponentially with increasing attractive force between a silicon nitride ball and visco-elastic soft UHMWPE film There is a strong influence of the normal load on this relationship for the polymer surface in the above-mentioned load range. The magnitude of the initial coefficient of friction decreases for UHMWPE film in the higher normal load regime because of its visco-elastic and soft nature as earlier proposed by Bowden and Tabor (C) 2009 Elsevier B V All rights reserved
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