Enhanced lubricity and anti-wear performance of zwitterionic polymer-modified N-enriched porous carbon nanosheets as water-based lubricant additive

被引：58

作者：

Lu, Qi ^{[1
]}

Zhang, Tingting ^{[1
]}

He, Baoluo ^{[1
]}

Xu, Fei ^{[1
]}

Liu, Shujuan ^{[1
]}

Ye, Qian ^{[1
]}

Zhou, Feng ^{[1
,2
]}

机构：

[1] Northwestern Polytech Univ, Ctr Adv Lubricat & Seal Mat, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2022年 / 167卷

关键词：

Water-based lubricant additives; Zwitterion polymer; Porous carbon nanosheets; Friction reduction; TRIBOLOGICAL PERFORMANCE; FRICTION; DOTS; NANOPARTICLES; MECHANISM; GRAPHENE;

D O I：

10.1016/j.triboint.2021.107421

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The zwitterion polymer functionalized N-enriched porous carbon nanosheets were prepared via pyrolysis and etching of pyridine-coordinated polymer for N@PCNS. Subsequently, N@PCNS was modified with polydopamine to grow the zwitterionic polymer (PEIS), thereby acquiring PEIS functionalized N@PCNS (PEIS-PCNS). The exceptional tribological performance of PEIS-PCNS was attributed to the synergistic lubrication effects of N@PCNS along with the zwitterionic polymer PEIS, which facilitates the formation of a stable protective carbon film over the worn surface via complicated tribo-chemical reaction. Meanwhile, the presence of a hydration layer encapsulated by PEIS as the boundary lubricating film proves highly conducive for friction reduction. The average coefficient of friction showed a dramatic decrease to 0.17 from 0.63, and the wear depth of stainless steel dropped 64%.

引用

页数：10

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