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Development and Characterisation of Multi-Scale Carbon Reinforced PPS Composites for Tribological Applications
Luleå University of Technology, Department of Engineering Sciences and Mathematics.ORCID iD: 0000-0001-9126-3938
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0002-4940-8176
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-8676-8819
2019 (English)In: Lubricants, E-ISSN 2075-4442, Vol. 7, no 4, article id 34Article in journal (Refereed) Published
Abstract [en]

Polymer-based materials show to be of increasing interest in replacing metal based materials in tribological applications due to their low weight, cost and easy manufacturability. To further reduce the environmental impact of these bearing materials recyclability is becoming more crucial, stimulating the need for high performing thermoplastic materials. In this study, polyphenylene sulfide (PPS) composites were prepared in an effort to enhance its tribological properties. Short carbon fibres (SCFs), graphene oxide (GO) and nano diamonds (NDs) as well as polytetrafluoroethylene (PTFE) were used as micro and nano reinforcements. The addition of SCFs especially decreased the linear coefficient of thermal expansions while enhancing the micro hardness and wettability of the polymer. Under water lubricated conditions, a decrease in friction up to 56% and a reduction of wear rate in the order of 103 was observed by the addition of SCF. The reduction in friction and wear was further enhanced by the addition of NDs, providing a synergistic effect of the reinforcements in micro and nano scale. By testing the individual reinforcements under dry conditions, PTFE and SCFs were especially effective in reducing friction while the release and consequent abrasion of NDs and SCFs increased the wear under a higher contact pressure.

Place, publisher, year, edition, pages
MDPI, 2019. Vol. 7, no 4, article id 34
Keywords [en]
PPS, short carbon fiber, nanocomposites, PTFE, wear, friction
National Category
Composite Science and Engineering Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-73529DOI: 10.3390/lubricants7040034ISI: 000467292800006Scopus ID: 2-s2.0-85066439713OAI: oai:DiVA.org:ltu-73529DiVA, id: diva2:1303293
Note

Validerad;2019;Nivå 2;2019-06-17 (johcin)

Available from: 2019-04-09 Created: 2019-04-09 Last updated: 2024-04-04Bibliographically approved

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Somberg, JulianEmami, Nazanin

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