Microencapsulated paraffin as a tribological additive for advanced polymeric coatings

Reza GHEISARI; Mariela VAZQUEZ; Vasilis TSIGKIS; Ali ERDEMIR; Karen L. WOOLEY; Andreas A. POLYCARPOU

doi:10.1007/s40544-022-0733-3

Friction 2023, 11(10): 1939-1952 https://doi.org/10.1007/s40544-022-0733-3

Research Article |

Open Access | Issue | Published: 19 April 2023

Microencapsulated paraffin as a tribological additive for advanced polymeric coatings

Show Author's Information Hide Author's Information Reza GHEISARI^¹, Mariela VAZQUEZ^², Vasilis TSIGKIS^¹, Ali ERDEMIR^¹, Karen L. WOOLEY^{²^,³^,⁴}, Andreas A. POLYCARPOU^¹(

)

1 J. Mike Walker ’66 Department of Mechanical Engineering, Texas A&M University, College Station 77843, USA

2 Department of Chemistry, Texas A&M University, College Station 77843, USA

3 Department of Materials Science & Engineering, Texas A&M University, College Station 77843, USA

4 Department of Chemical Engineering, Texas A&M University, College Station 77843, USA

Keywords:

microencapsulated phase change material (MPCM), friction reduction additive, advanced polymeric coating

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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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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.

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Microencapsulated paraffin as a tribological additive for advanced polymeric coatings

Show Author's information Hide Author's Information Reza GHEISARI^¹, Mariela VAZQUEZ^², Vasilis TSIGKIS^¹, Ali ERDEMIR^¹, Karen L. WOOLEY^{²^,³^,⁴}, Andreas A. POLYCARPOU^¹(

)

1 J. Mike Walker ’66 Department of Mechanical Engineering, Texas A&M University, College Station 77843, USA

2 Department of Chemistry, Texas A&M University, College Station 77843, USA

3 Department of Materials Science & Engineering, Texas A&M University, College Station 77843, USA

4 Department of Chemical Engineering, Texas A&M University, College Station 77843, USA

Abstract

Keywords: microencapsulated phase change material (MPCM), friction reduction additive, advanced polymeric coating

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Publication history

Received: 11 September 2022

Revised: 27 November 2022

Accepted: 20 December 2022

Published: 19 April 2023

Issue date: October 2023

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Acknowledgements

Fundings of the present study were provided by Texas A&M University X-Grant and by Strategic Transformative Research Program (STRP) Grant, College of Science. The authors also acknowledge the use of the Texas A&M Materials Characterization Core Facility (RRID: SCR_022202). We gratefully acknowledge the financial support from the Robert A. WELCH Foundation through the W.T. Doherty-WELCH Chair in Chemistry (A-0001). Mariela VAZQUEZ appreciates the support by the National Science Foundation Graduate Research Fellowship Program (Grant No. M1703014). Insightful discussions with Ms. Yidan SHEN are also greatly appreciated.

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