Preparation and tribological properties of graphene oxide/nano-MoS2 hybrid as multidimensional assembly used in the polyimide nanocomposites

被引：28

作者：

Xin, Yuanshi ^{[1
]}

Li, Tongsheng ^{[1
]}

Gong, Dafei ^{[1
]}

Xu, Fanglin ^{[1
]}

Wang, Mingming ^{[1
]}

机构：

[1] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China

来源：

RSC ADVANCES | 2017年 / 7卷 / 11期

关键词：

FUNCTIONALIZED GRAPHENE; MOLYBDENUM-DISULFIDE; WEAR BEHAVIORS; FILLER CONTENT; FRICTION; OXIDE; COMPOSITES; SIZE; PERFORMANCE; SURFACE;

D O I：

10.1039/c6ra27108a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A three-step strategy was employed to prepare a self-lubricating and anti-wear graphene oxide/nano-MoS2 (GO/nano-MoS2, abbreviated GMS) hybrid by chemical compounding as a novel multidimensional assembly. This development aims to overcome the high friction coefficient of GO/polymer composites and to explore the variations in the tribological properties stemming from the different nanoparticles immobilized on the GO surface. The as-prepared GMS was incorporated into a polyimide (PI) matrix to yield GMS/PI composites by in situ polymerization. The mechanical, thermodynamic, surface, and tribological properties of the GMS/PI composites were investigated, and the synergistic effects of the abovementioned properties between nano-MoS2 and GO were discussed in detail. A homogeneous dispersion of GMS, a suppressive and protective effect of graphene sheets, a rolling friction effect of the detached nano-MoS2 particles, and a transfer film composed of MoS2 were achieved herein, contributing to the enhanced tribological properties. The differences in the enhancement effects of nanohybrids can be mainly attributed to two aspects: the intrinsic characteristics of the assembled nanoparticles and the combinational structure of the multidimensional assemblies.

引用

页码：6323 / 6335

页数：13

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