Amine-terminated ionic liquid modified graphene oxide/copper nanocomposite toward efficient lubrication

被引:111
作者
Gan, Chaoliang [1 ,2 ]
Liang, Ting [1 ,2 ]
Li, Wen [1 ]
Fan, Xiaoqiang [1 ]
Zhu, Minhao [1 ,2 ]
机构
[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China
[2] Southwest Jiaotong Univ, Tribol Res Inst, Sch Mech Engn, Chengdu 610031, Sichuan, Peoples R China
基金
中国国家自然科学基金;
关键词
Graphene oxide; Ionic liquids; Synergistic effect; Lubrication; MULTIWALLED CARBON NANOTUBES; FUNCTIONALIZED GRAPHENE; TRIBOLOGICAL PROPERTIES; THERMAL-CONDUCTIVITY; COPPER NANOPARTICLES; OXYGEN REDUCTION; OXIDE; FABRICATION; NANOMATERIAL; DISPERSIONS;
D O I
10.1016/j.apsusc.2019.06.141
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
How to make full use of the synergistic effect between nanomaterials is of great significance for designing high-performance lubricating materials. Here, novel amine-terminated ionic liquid-modified graphene oxide (GO)/copper nanocomposite (IL-GO/Cu) is synthesized by facile liquid-phase method in which GO nanosheets and Cu nanoparticles are linked by 1-aminoethyl-3-methyl imidazolium nitrate ionic liquid through covalently grafting and electrostatic interaction. Of what interest is the homogeneous distribution of Cu nanoparticles on IL-GO plane/interlayers, possibly being endowed to excellent lubrication function. Results demonstrate that IL-GO/Cu nanocomposite with 0.08 wt% addition amount into polyethylene glycol (PEG 200) improves friction and wear resistance by up to 40.1% and 47%, respectively. Such performance characteristics mainly depend on the synergistic lubrication, including not only the boundary lubrication film composed of adsorbed/transfer/tribochemical film, but also the "third body" from the additive and its wear debris with Fe/Cu nanocrystals-embedded graphene-like structure. This paper offers an attractive strategy for fabricating graphene-based nanocomposite toward real-world application in tribology.
引用
收藏
页码:105 / 115
页数:11
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