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Tribological Properties of Porous PEEK Composites Containing Ionic Liquid under Dry Friction Condition
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing .
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Key Laboratory of Material and Chemical Engineering, Nanjing Tech University, Nanjing .
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing .
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2017 (English)In: Lubricants, ISSN 2075-4442, Vol. 5, no 2, 19Article in journal (Refereed) Published
Abstract [en]

NaCl particles were added into Polyetheretherketone (PEEK) and its composites to produce porous PEEK-based materials by washing NaCl away after the high-temperature compression molding process. After that, an ionic liquid was added into the porous materials under vacuum condition. Carbon fibers (CF), as reinforcement, and PTFE, as an internal solid lubricant, were employed to prepare PEEK composites. Tribological properties under dry friction condition were studied on a ring-on-disc tribo-meter. The influence of CF and PTFE on tribological properties was carefully investigated. The results indicated that, in comparison with traditional PEEK composites (CF/PTFE/PEEK), the porous PEEK composites containing ionic liquid showed much better tribological properties. It is found that CF can help PEEK form effective pores to suck in the ionic liquid resulting in a better tribological performance. CF reinforced porous PEEK containing ionic liquid (p-CF/PEEK + IL) demonstrated the lowest friction coefficient (27% of CF/PTFE/PEEK) and the lowest wear loss (only 0.9% of CF/PTFE/PEEK). Long time tribological test revealed that the wear mass loss comes from the running-in period, while its wear is negligible after this period. It is also found that the addition of PTFE has a negative influence on the tribological behaviors, especially under high sliding velocity and applied load

Place, publisher, year, edition, pages
MDPI AG , 2017. Vol. 5, no 2, 19
National Category
Tribology
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-64637DOI: 10.3390/lubricants5020019OAI: oai:DiVA.org:ltu-64637DiVA: diva2:1117756
Note

Validerad;2017;Nivå 2;2017-06-29 (andbra)

Available from: 2017-06-29 Created: 2017-06-29 Last updated: 2017-07-07Bibliographically approved

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CiteExportLink to record
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