Using Green, Economical, Efficient Two-Dimensional (2D) Talc Nanosheets as Lubricant Additives under Harsh Conditions

被引：7
|
作者：
Zhao, Jun [1 ,2 ,3 ]
Gao, Tong [1 ]
Dang, Jie [1 ]
Cao, Weiyu [3 ]
Wang, Ziqi [1 ]
Li, Shuangxi [1 ]
Shi, Yijun [2 ]
机构：
[1] Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China
[2] Lulea Univ Technol, Div Machine Elements, S-97187 Lulea, Sweden
[3] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
来源：
NANOMATERIALS | 2022年 / 12卷 / 10期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
2D nanomaterial; additive; grease; green lubrication; friction; wear; TRIBOLOGICAL PROPERTIES; ANTIWEAR ADDITIVES; FRICTION; ASH; ADSORPTION; GRAPHENE;
D O I：
10.3390/nano12101666
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two-dimensional (2D) nanomaterials have attracted much attention for lubrication enhancement of grease. It is difficult to disperse nanosheets in viscous grease and the lubrication performances of grease under harsh conditions urgently need to be improved. In this study, the 2D talc nanosheets are modified by a silane coupling agent with the assistance of high-energy ball milling, which can stably disperse in grease. The thickness and size of the talc nanosheet are about 20 nm and 2 mu m. The silane coupling agent is successfully grafted on the surface of talc. Using the modified-talc nanosheet, the coefficient of friction and wear depth can be reduced by 40% and 66% under high temperature (150 degrees C) and high load (3.5 GPa), respectively. The enhancement of the lubrication and anti-wear performance is attributed to the boundary adsorbed tribofilm of talc achieving a repairing effect of the friction interfaces, the repairing effect of talc on the friction interfaces. This work provides green, economical guidance for developing natural lubricant additives and has great potential in sustainable lubrication.
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收藏
页数：13
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