Triboelectric Performance of Ionic Liquid, Synthetic, and Vegetable Oil-Based Polytetrafluoroethylene (PTFE) Greases

Bibliographic Details
Title: Triboelectric Performance of Ionic Liquid, Synthetic, and Vegetable Oil-Based Polytetrafluoroethylene (PTFE) Greases
Authors: Nur Aisya Affrina Mohamed Ariffin, Chiew Tin Lee, Arunkumar Thirugnanasambandam, King Jye Wong, William Woei Fong Chong
Source: Lubricants, Vol 12, Iss 8, p 272 (2024)
Publisher Information: MDPI AG, 2024.
Publication Year: 2024
Collection: LCC:Science
Subject Terms: oleic acid, polyalphaolefin (PAO), trimethylolpropane oleate (TMPO), lubrication, friction, triboelectric, Science
More Details: Within electrical contacts, poor electrical conductivity of lubricants can lead to triboelectric charging, causing electrostatic currents and thermal effects, which accelerate lubrication failure. This study aimed to address these challenges by producing and testing three greases with different base oils: ionic liquid ([Oley][Oleic]), synthetic oil (PAO4), and vegetable oil-based synthetic ester (trimethylolpropane oleate). Each grease was prepared with polytetrafluoroethylene powder as the thickener. The greases were tested using a custom-made tribometer, integrated with a grounded electrical current system, with friction tests conducted with up to a 2 A electrical current flow at a constant voltage supply of 4.5 V. Under triboelectric friction testing, [Oley][Oleic] grease outperformed a commercial perfluoropolyether grease by 27.7% in friction and 16.3% in wear. This grease also showed better performance than formulated lithium grease with extreme pressure additives. The study demonstrates that greases with low interfacial resistance can retain their lubrication capacity under triboelectric conditions. These results indicate that [Oley][Oleic] grease, with its ionic liquid base oil, offers a promising solution for applications involving electrical contacts. This study highlights the potential of using advanced base oils and thickeners to enhance the performance and sustainability of lubricants in demanding environments.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2075-4442
Relation: https://www.mdpi.com/2075-4442/12/8/272; https://doaj.org/toc/2075-4442
DOI: 10.3390/lubricants12080272
Access URL: https://doaj.org/article/102a348a98f9428bad14916898695907
Accession Number: edsdoj.102a348a98f9428bad14916898695907
Database: Directory of Open Access Journals
More Details
ISSN:20754442
DOI:10.3390/lubricants12080272
Published in:Lubricants
Language:English