Significantly Reducing Friction and Wear of Water-Based Fluids with Shear Thinning Bicomponent Supramolecular Hydrogels

Yurong Wang, Yang Wu, Qiangliang Yu, Jiaying Zhang, Zhengfeng Ma, Ming Zhang, Liqiang Zhang, Yanyan Bai, Meirong Cai, Feng Zhou, Weimin Liu

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The development of low-cost water-based products with environmentally friendly, flame-retardant, and excellent cooling performance is of immense scientific interest in lubrication. For this purpose, a series of water-based lubricant additives have been developed, but most of them lack practical application due to the problems of volatility and viscosity. Herein, a novel semisolid supramolecular hydrogel lubricating material of 2,4,6-triamino-1,3,5-triazin-1-ium diisopentyl phosphate is reported. The functionalized two-component gelator molecule can self-assemble through intermolecular interaction to form 3D network structure effectively traps the diethylene glycol or water-glycol, thereby improving its viscosity and reducing water's volatile. The hydrogel forms an effective protective film on the steel surface during the running-in process that endows unique characters of extreme-pressure and abrasion resistance behaviors. Therefore, the hydrogel always maintains a low coefficient of friction in the load (from 100 to 1200 N) and frequency (from 10 to 40 Hz, at 400 N) conversion tests. This allows to generate potential applications in the field of lubrication, especially as a high water-based lubricant applied in high load.

Original languageEnglish
Article number2001084
JournalAdvanced Materials Interfaces
Volume7
Issue number23
DOIs
StatePublished - 3 Dec 2020
Externally publishedYes

Keywords

  • antiwear
  • extreme-pressure
  • supramolecular hydrogels
  • thixotropic property
  • water-based lubricant

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