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Tribological properties of the P and S-free protic ionic liquids as water-based lubricants.

Tribological properties of the P and S-free protic ionic liquids as water-based lubricants.

Authors :
Yang, Shenghui
Shi, Yongjia
Zuo, Xiangyu
Zhang, Xia
Source :
Journal of Molecular Liquids. Nov2024:Part A, Vol. 414, pN.PAG-N.PAG. 1p.
Publication Year :
2024

Abstract

[Display omitted] • The phosphorus and sulfur free protic ionic liquid have been successfully synthesized. • The synthesized protic ionic liquids as water-based lubricants were observed to significantly reduce the coefficient of friction and the wear volume. • The protic ionic liquid also possess excellent anti-corrosion properties. • The system is suitable for different load ranges, sliding speed ranges and types of alcohol. Three kinds of P and S-free 1,8-Diazabicyclo[5.4.0] undec-7-ene water-soluble protic ionic liquids (PILs) were successfully synthesized and applied as additives in water-1,2-Propylene glycol (PG). The physicochemical properties of PILs and the anti-friction, anti-wear and anti-corrosion properties were investigated. Research results demonstrated that the addition PILs lubricant additive could greatly improve the tribological properties of water-1,2-PG. The addition of 5 wt% PILs with long alkyl chain will result in the reduction of friction coefficient and wear volume by about 45 % and 95 %, respectively. Meanwhile, the PILs with long-chain show more effect lubrication behavior than the short one. In addition, the obtained PILs also possess excellent anti-corrosion properties as water-based lubrication additives. The elemental analysis of the contact area showed that the PILs would generate a chemical reaction film during the friction process, and the carboxylate anion could form a chemical and physical adsorption film on the surface of contact area, which would provide better anti-friction and anti-wear properties. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
01677322
Volume :
414
Database :
Academic Search Index
Journal :
Journal of Molecular Liquids
Publication Type :
Academic Journal
Accession number :
180797569
Full Text :
https://doi.org/10.1016/j.molliq.2024.126101