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Lubricating properties of thymol-based deep eutectic solvents

Ting Li (Shenyang Jianzhu University, Shenyang, China)
Zhipeng Zhang (Shenyang Jianzhu University, Shenyang, China)
Junhai Wang (Shenyang Jianzhu University, Shenyang, China)
Tingting Yan (Shenyang Jianzhu University, Shenyang, China)
Rui Wang (Shenyang Jianzhu University, Shenyang, China)
Xinran Li (Shenyang Jianzhu University, Shenyang, China)
Lixiu Zhang (Shenyang Jianzhu University, Shenyang, China)
Xiaoyi Wei (Shenyang Jianzhu University, Shenyang, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 26 June 2024

Issue publication date: 2 August 2024

87

Abstract

Purpose

This study aims to prepare thymol-based deep eutectic solvents (DESs) and use them as lubricates for friction and wear tests to simulate the wear conditions of hybrid bearings.

Design/methodology/approach

Through the characterization and analysis of the morphology of wear scars and the elemental composition of friction films, the tribological behavior and wear mechanism of sample materials as lubricants were investigated and the anti-wear mechanism of thymol-based DESs was discussed.

Findings

The findings demonstrate that because of the formation of a fluid lubrication film and excellent kinematic viscosity, the lubrication effect of the prepared DES is improved by about 50% compared to the base lubricating oil. The prepared [Ch]Cl-thymol DES has a better anti-friction and lubrication effect than citric-thymol, EG-thymol and urea-thymol DESs, with an average friction coefficient of about 0.04.

Originality/value

In this work, the friction reduction properties of thymol-based DESs were studied as lubricants for the first time, and the lubrication mechanism of sample materials was investigated.

Keywords

Acknowledgements

The authors appreciate the financial support provided by the Key Project of the Education Department of Liaoning Province (JYTZD2023167) and the Natural Science Foundation Project of Liaoning Province (2023-MS-225).

Citation

Li, T., Zhang, Z., Wang, J., Yan, T., Wang, R., Li, X., Zhang, L. and Wei, X. (2024), "Lubricating properties of thymol-based deep eutectic solvents", Industrial Lubrication and Tribology, Vol. 76 No. 6, pp. 759-768. https://doi.org/10.1108/ILT-03-2024-0070

Publisher

:

Emerald Publishing Limited

Copyright © 2024, Emerald Publishing Limited

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