Next Article in Journal
Laser Textured Surfaces for Mixed Lubrication: Influence of Aspect Ratio, Textured Area and Dimple Arrangement
Previous Article in Journal
Lube Oil Wear Reduction via Organic Tribofilms
Previous Article in Special Issue
Time-Resolved Characterization of Dynamic Tribochemical Processes for Dicationic Imidazolium Ionic Liquid
Article Menu

Export Article

Open AccessArticle
Lubricants 2017, 5(3), 31; doi:10.3390/lubricants5030031

Ionic Liquids as Grease Base Liquids

1,†
,
2,†
,
2,* and 2,*
1
Priority Research Centre for Advanced Fluids and Interfaces, University of Newcastle, Callaghan, NSW 2308, Australia
2
School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Received: 10 July 2017 / Revised: 31 July 2017 / Accepted: 4 August 2017 / Published: 8 August 2017
(This article belongs to the Special Issue Ionic Liquids in Tribology)
View Full-Text   |   Download PDF [1707 KB, uploaded 8 August 2017]   |  

Abstract

The rheological characteristics of one mineral oil and two ionic liquid (IL) based lubricating greases were explored as a function of thickener concentration. The ILs used are 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][TFSI]) and trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)imide ([P6,6,6,14][TFSI]), with polytetra-fluoroethylene (PTFE) particles used as thickeners. Greases with different base liquid concentrations (60–80 wt %) were investigated using small-amplitude oscillatory shear and viscous flow measurements, and contact angle measurements probed adhesion at base liquid–PTFE interfaces. Rheological properties are influenced by base liquid–PTFE adhesion and the chemical structure of the grease base liquids. With the addition of thickener, the greases generally have higher elasticity, strain resistance, and frequency independent properties. Viscometric rheological tests illustrate non-Newtonian shear-thinning behaviour for all greases. [BMIM][TFSI] based greases show the most elastic properties and strain resistance, as well as the highest initial and lowest final viscosities of the greases tested. View Full-Text
Keywords: ionic liquids; lubricating grease; rheology ionic liquids; lubricating grease; rheology
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Mozes, R.; Cooper, P.K.; Atkin, R.; Li, H. Ionic Liquids as Grease Base Liquids. Lubricants 2017, 5, 31.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Lubricants EISSN 2075-4442 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top