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Improving the Tribological Performance of POM through the Incorporation of Bio-Based Materials
Lucas M Kneissl1,2, Roberts Joffe3, Mitjan Kalin2
1Polymer-Tribology Group, Division of Machine Elements, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Campus Porsön, 971 87 Luleå, Sweden.
Abstract:
Polyoxymethylene (POM), an engineering polymer commonly used in tribological applications, is often reinforced with fossil-based fibers such as carbon and/or glass fibers to improve its properties. To find more sustainable solutions, in this study, the tribological performance of POM/short cellulose fiber composites at different sliding conditions is investigated. An improvement in the wear coefficient of roughly 69% is observed at the harshest conditions of 5 MPa and 1 m · s-1 with only 10 wt.% cellulose fibers. The friction behavior is furthermore stabilized through fiber addition, as the unfilled polymer did not show a steady state. No signs of thermo-oxidative degradation are found after tribological testing. This study presents promising results for sustainable wear-resistant polymer materials in tribological applications.
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