Issue 11, 2017

Molecular design of advanced lubricant base fluids: hydrocarbon-mimicking ionic liquids

Abstract

This paper describes the molecular design and tribological evaluation of novel room-temperature ionic liquid (RTIL) lubricants, abbreviated as P–SiSOs. The RTILs are designed to mimic hydrocarbons, in order to ensure their compatibility with existing tribosystems as well as enable use of conventional additives. Steel-on-steel ball-on-flat reciprocating tribotests performed under atmospheric conditions show that the neat P–SiSOs exhibit favorable performances, resulting in friction and wear significantly lower than those in the case of the perfluoropolyether lubricants used as references. Tribotests performed at elevated loads and temperatures indicate the formation of friction-reducing boundary films of the neat P–SiSOs. The tribological performance of the P–SiSO is improved further by the incorporation of additives conventionally used in hydrocarbon oils. When used in a concentration of 5 wt%, the additives glycerol monooleate, dibenzyl disulfide, and oleylamine improve the tribological characteristics of P–SiSO. These results indicate that molecular-designed hydrocarbon-mimicking RTIL lubricants can exhibit suitable performances in the neat form and that their performances can be improved further by using conventional additives, as in the case of hydrocarbon base oil-additive systems.

Graphical abstract: Molecular design of advanced lubricant base fluids: hydrocarbon-mimicking ionic liquids

Supplementary files

Article information

Article type
Paper
Submitted
20 11月 2016
Accepted
06 1月 2017
First published
19 1月 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 6364-6373

Molecular design of advanced lubricant base fluids: hydrocarbon-mimicking ionic liquids

E. Nyberg, C. Y. Respatiningsih and I. Minami, RSC Adv., 2017, 7, 6364 DOI: 10.1039/C6RA27065D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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