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The polyionic liquid poly-PEGMA-r-METAC (PPM) with quaternary ammonium has been synthesized and evaluated as additive in aqueous lubricating fluids. The rheological behavior of aqueous lubricating fluids with PPM has been characterized to confirm PPM’s function as a viscosity modifier. The tribological behavior of aqueous lubricating fluids with PPM has been investigated on SRV-V and MTM testing machines. It was found that PPM has excellent viscosity-increasing, lubricating, and anti-wear properties as an additive for aqueous, which can be attributed to the ability of PPM to form the protective film and boundary tribofilm generated from complex tribochemical reaction on rubbing surface. The obtained PPM with dual functions of anti-corrosion additives and viscosity index improver can play an important role in diverse lubrication regimes.


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A novel polyionic liquid with lubricity and viscosity-increasing dual functionalities as the additive in aqueous lubrication system

Show Author's information Bo YU1,2,3,5Kun ZOU1,2,3,5Rui WANG2,3Qiang CHEN3Rui DONG2Xiao LIU3Jiaying ZHANG2,3Wenquan LV2,3Qiangliang YU2,3,4Meirong CAI2,3,4( )Feng ZHOU2,3( )
College of Science, Nanjing Forestry University, Nanjing 210037, China
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China
Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China
Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China

Abstract

The polyionic liquid poly-PEGMA-r-METAC (PPM) with quaternary ammonium has been synthesized and evaluated as additive in aqueous lubricating fluids. The rheological behavior of aqueous lubricating fluids with PPM has been characterized to confirm PPM’s function as a viscosity modifier. The tribological behavior of aqueous lubricating fluids with PPM has been investigated on SRV-V and MTM testing machines. It was found that PPM has excellent viscosity-increasing, lubricating, and anti-wear properties as an additive for aqueous, which can be attributed to the ability of PPM to form the protective film and boundary tribofilm generated from complex tribochemical reaction on rubbing surface. The obtained PPM with dual functions of anti-corrosion additives and viscosity index improver can play an important role in diverse lubrication regimes.

Keywords: lubricant additives, polyionic liquid, viscosity modifier, lubrication regime

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Publication history

Received: 29 January 2023
Revised: 04 May 2023
Accepted: 21 June 2023
Published: 15 December 2023
Issue date: April 2024

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© The author(s) 2023.

Acknowledgements

Authors gratefully acknowledge the support from the National Key R&D Program of China (2021YFA0716304), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB 0470301), the National Natural Science Foundation of China (U23A20623, 21972153, and 52075524), Gansu Province Science and Technology Plan (20JR10RA060, 22ZD6GA002, and 22ZD6GA025), Openning Project of State Key Laboratory of Solid Lubrication, LICP (LSL-2004), and the Taishan Scholars Program.

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