Investigating the tribological behavior of PEGylated MoS2 nanocomposites as additives in polyalkylene glycol at elevated temperature

被引：13

作者：

Xu, Zhuang ^{[1
,2
]}

Lou, Wenjing ^{[1
]}

Wu, Xinhu ^{[1
,2
]}

Wang, Xiaobo ^{[1
]}

Hao, Junying ^{[1
]}

机构：

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

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

RSC ADVANCES | 2017年 / 7卷 / 84期

基金：

中国国家自然科学基金;

关键词：

LUBRICANT ADDITIVES; WS2; NANOPARTICLES; WEAR BEHAVIOR; OIL; PERFORMANCE; NANOSHEETS; FRICTION; PARTICLES; NANOTUBES; COMPOSITE;

D O I：

10.1039/c7ra10992j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

MoS2-polydopamine-methoxypolyethyleneglycol amine (MoS2-PDA-MGA) was synthesized through the combination of mussel-inspired chemistry and the Michael addition reaction. The modification of MoS2 via PDA and MGA enhanced its dispersion stability in oil. The tribological properties of MoS2-PDA-MGA for use as additives in polyalkylene glycol (PAG) base oil were investigated using an oscillating reciprocating tribometer at elevated temperatures. The results indicated that the addition of 0.7 wt% MoS2-PDA-MGA in PAG resulted in excellent friction-reducing and anti-wear (AW) performances compared with PAG base oil. The tribological results of MoS2-PDA-MGA and MoS2 dispersed in PAG base oil after settling for 7 days indicate that MoS2-PDA-MGA, with its good dispersion stability, has stable friction-reducing and AW properties. XPS analysis suggested that a protective boundary film formed on the wear surfaces during the friction and wearing process, which was believed to be responsible for the excellent tribological performance of MoS2-PDA-MGA dispersed in PAG at elevated temperature.

引用

页码：53346 / 53354

页数：9

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