Covalent Functionalization of Fluorinated Graphene and Subsequent Application as Water-based Lubricant Additive

2016 ◽  
Vol 8 (11) ◽  
pp. 7483-7488 ◽  
Author(s):  
Xiangyuan Ye ◽  
Limin Ma ◽  
Zhigang Yang ◽  
Jinqing Wang ◽  
Honggang Wang ◽  
...  
Keyword(s):  
Lubricant Additive ◽  
Covalent Functionalization ◽  
Water Based ◽  
Subsequent Application ◽  
Fluorinated Graphene

Covalent functionalization of fluorinated graphene through activation of dormant radicals for water-based lubricants

Carbon ◽  
2020 ◽  
Vol 167 ◽  
pp. 826-834 ◽  
Author(s):  
Kun Fan ◽  
Xikui Liu ◽  
Yang Liu ◽  
Yu Li ◽  
Yue Chen ◽  
...  
Keyword(s):  
Covalent Functionalization ◽  
Water Based ◽  
Fluorinated Graphene

Preparation of Cu@SiO 2 composite nanoparticle and its tribological properties as water‐based lubricant additive

2020 ◽  
Vol 32 (2) ◽  
pp. 69-79 ◽  
Author(s):  
Tiantian Liu ◽  
Changhua Zhou ◽  
Chuanping Gao ◽  
Yujuan Zhang ◽  
Guangbin Yang ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Lubricant Additive ◽  
Water Based ◽  
Composite Nanoparticle

scholarly journals Black phosphorus quantum dots: A new-type of water-based high-efficiency lubricant additive

Friction ◽  
2020 ◽  
Author(s):  
Weiwei Tang ◽  
Zhiqiang Jiang ◽  
Baogang Wang ◽  
Yufeng Li
Keyword(s):  
Quantum Dots ◽  
High Efficiency ◽  
Lubricant Additive ◽  
Black Phosphorus ◽  
Friction Reduction ◽  
Wear Volume ◽  
Wear Properties ◽  
Water Based ◽  
Black Phosphorus Quantum Dots ◽  
Base Liquid

AbstractBlack phosphorus quantum dots (BPQDs), obtained via a typical solution-based top-down method, were used as water-based lubricant additives. BPQDs exhibited remarkable friction reduction and anti-wear properties even at the ultra-low concentration of 0.005 wt%, which reduced the friction coefficient and wear volume of the base liquid by 32.3% and 56.4%, respectively. In addition, the load-supporting capacity of the base liquid increased from 120 N to over 300 N. BPQDs-based additives exhibited a relatively long lifetime at a relatively high load of 80 N. The performance of BPQDs considerably exceeded that of the BP; this may be attributed to their small and uniform particle size, good dispersion stability in water, and high reactivity at the frictional surfaces. The results of the surface wear resistance analysis demonstrated that a robust tribochemical film with a thickness of approximately 90 nm was formed on the rubbing surface lubricated with 0.005 wt% of BPQDs dispersion. Moreover, the film served as a direct evidence of the excellent tribological performance of BPQDs.

Tribological properties of graphene oxide sheets as water-based lubricant additive

2018 ◽  
Vol 70 (6) ◽  
pp. 1025-1036 ◽  
Author(s):  
Gangqiang Zhang ◽  
Xiangqiong Zeng ◽  
Tianhui Ren ◽  
Emile van der Heide
Keyword(s):  
Graphene Oxide ◽  
Normal Load ◽  
Lubricant Additive ◽  
Tribological Performance ◽  
Content Type ◽  
Angle Measurements ◽  
Water Based ◽  
Stainless Steel Ball ◽  
Microstructure Morphology ◽  
Experimental Findings

Purpose The purpose of this paper is to investigate the tribological performance of graphene oxide (GO) sheets as water-based lubricant additive when ultra-high molecular weight polyethylene (UHMWPE) plates slid against 316L stainless steel ball using a reciprocating tribometre. Design/methodology/approach The factors influencing the tribological performance were considered, including the viscosity of the GO dispersion, normal load, sliding velocity and the roughness of UHMWPE. The surface microstructure and properties of UHMWPE were studied by means of scanning electron microscopy, laser confocal microscopy, Raman spectroscopy and contact angle measurements. Findings The results revealed that the GO dispersion reduced friction and sliding-wear. The surface images of the wear UHMWPE plates indicated that GO sheets were prone to adsorption on the surface and form a thin physical tribofilms at the substrate. Originality/value Based on the experimental findings for the evolution of the microstructure morphology and the development of subsurface cracks, less debris and cracking can be observed in the UHMWPE plates lubricated by GO dispersion.

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