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Surface-Modified Sepiolite Nanofibers as a Novel Lubricant Additive

Published online by Cambridge University Press:  01 January 2024

Fei Wang ,
Peizhang Gao ,
Jinsheng Liang ,
Baizeng Fang ,
Tingting Zhang  and
Huimin Liu
Fei Wang*
Affiliation:
Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin 300130, China Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China
Peizhang Gao
Affiliation:
Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin 300130, China Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China
Jinsheng Liang
Affiliation:
Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin 300130, China Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China
Baizeng Fang
Affiliation:
Department of Chemical & Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
Tingting Zhang
Affiliation:
Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin 300130, China Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China
Huimin Liu
Affiliation:
Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin 300130, China Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China
*
*E-mail address of corresponding author: [email protected]
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Abstract

Lubricants are an essential component in high-performance mechanical equipment, but traditional lubricants are becoming inadequate for meeting the increasing demands for anti-friction and anti-wear properties and they discharge harmful chemicals to the environment. The purpose of the present study was to explore the use of sepiolite as a novel oil additive to extend the performance of lubricants. Sepiolite nanofibers were first treated by acid followed by a dry air flow, aimed at increasing the pore volume and decreasing the particle size. Then the nanofibers were further modified by an organosilane coupling agent to reduce the surface free energy and to improve the dispersion stability in lubricant. A significant improvement in the performance of the lubricant was achieved by using the modified sepiolite nanofibers as an additive. When the amount of modified sepiolite nanofibers added was 1.5 wt.%, the best performance was demonstrated by the lubricant, showing a viscosity increase at 40°C and 100°C, and an increase in resistance to oxidation. Moreover, the acid value and pour point decreased, and the copper sheet corrosion level dropped to its lowest value.

Keywords

AdditiveLubricantSepioliteSurface ModificationUtilization
Type
Article
Information
Clays and Clay Minerals , Volume 67 , Issue 4 , August 2019 , pp. 283 - 290
Copyright
Copyright © Clay Minerals Society 2019

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Footnotes

This paper was originally presented during the World Forum on Industrial Minerals, held in Qing Yang, China, October 2018

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