Tribology and Materials | Volume 3 | Issue 4 | 2024 | 172-177
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https://doi.org/10.46793/tribomat.2024.017
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Pyridinium-based ionic liquids as anti-wear additives for calcium sulfonate greases
Nikita Semenov
,
Nikolay Pugachev
,
Anna Peskovets
National University of Oil and Gas "Gubkin University", Moscow, Russia
Abstract: The present study showed the usage of ionic liquids as
anti-wear additives for greases. New pyridinium-based ionic liquids
bearing long alkyl chains were prepared and evaluated as wear-reducing
additives in calcium sulfonate greases. The physical properties of the
synthetic ionic liquids were identified. The obtained liquids were then
added to greases at a concentration of 2 wt. %. The tribological
performance of the greases was measured by using a standard benchtop
test ASTM D2266. The results obtained allow us to conclude that the
introduction of ionic liquids into polyalkylene glycol (PAG)-based
calcium sulfonate grease has a positive effect on anti-wear properties
since the wear decreases by several orders of magnitude. The
interoperability of the synthetic ionic liquids with the calcium
sulfonate greases and its potential influence upon solubility and
tribological performance are tentatively proposed to be a result of the
molecular structure.
Keywords: ionic liquids, anti-wear additives, sulfonate grease.
Received: 22-10-2024, Revised: 25-11-2024, Accepted: 28-11-2024
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt,
and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.
Abstract: The present study showed the usage of ionic liquids as anti-wear additives for greases. New pyridinium-based ionic liquids bearing long alkyl chains were prepared and evaluated as wear-reducing additives in calcium sulfonate greases. The physical properties of the synthetic ionic liquids were identified. The obtained liquids were then added to greases at a concentration of 2 wt. %. The tribological performance of the greases was measured by using a standard benchtop test ASTM D2266. The results obtained allow us to conclude that the introduction of ionic liquids into polyalkylene glycol (PAG)-based calcium sulfonate grease has a positive effect on anti-wear properties since the wear decreases by several orders of magnitude. The interoperability of the synthetic ionic liquids with the calcium sulfonate greases and its potential influence upon solubility and tribological performance are tentatively proposed to be a result of the molecular structure.
Keywords: ionic liquids, anti-wear additives, sulfonate grease.
Received: 22-10-2024, Revised: 25-11-2024, Accepted: 28-11-2024
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt, and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.