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Research Article | Open Access

Microencapsulated paraffin as a tribological additive for advanced polymeric coatings

Reza GHEISARI1, Mariela VAZQUEZ2, Vasilis TSIGKIS1, Ali ERDEMIR1, Karen L. WOOLEY2,3,4, Andreas A. POLYCARPOU1( )
J. Mike Walker ’66 Department of Mechanical Engineering, Texas A&M University, College Station 77843, USA
Department of Chemistry, Texas A&M University, College Station 77843, USA
Department of Materials Science & Engineering, Texas A&M University, College Station 77843, USA
Department of Chemical Engineering, Texas A&M University, College Station 77843, USA
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Graphical Abstract

Abstract

Numerous tribological applications, wherein the use of liquid lubricants is infeasible, require adequate dry lubrication. Despite the use of polymers as an effective solution for dry sliding tribological applications, their poor wear resistance prevents the utilization in harsh industrial environment. Different methods are typically implemented to tackle the poor wear performance of polymers, however sacrificing some of their mechanical/tribological properties. Herein, we discussed the introduction of a novel additive, namely microencapsulated phase change material (MPCM) into an advanced polymeric coating. Specifically, paraffin was encapsulated into melamine-based resin, and the capsules were dispersed in an aromatic thermosetting co-polyester (ATSP) coating. We found that the MPCM-filled composite exhibited a unique tribological behavior, manifested as "zero wear", and a super-low coefficient of friction (COF) of 0.05. The developed composite outperformed the state-of-the-art polytetrafluoroethylene (PTFE)-filled coatings, under the experimental conditions examined herein.

Keywords

microencapsulated phase change material (MPCM)friction reduction additiveadvanced polymeric coating

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Friction
Volume 11 Issue 10,
October 2023
Pages 1939-1952
DOI: 10.1007/s40544-022-0733-3
Cite this article:
GHEISARI R, VAZQUEZ M, TSIGKIS V, et al. Microencapsulated paraffin as a tribological additive for advanced polymeric coatings. Friction, 2023, 11(10): 1939-1952. https://doi.org/10.1007/s40544-022-0733-3

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Received: 11 September 2022
Revised: 27 November 2022
Accepted: 20 December 2022
Published: 19 April 2023
© The author(s) 2022.

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