The Enhanced Lubrication of Water-Based Cutting Fluid by Functionalized GO

Xue, Shaoqing; Cen, Yuemei; Yang, Hongmei; Honda, Takeshi; Nakanishi, Yoshitaka; Zhang, Li; Zhang, Baohua; Zeng, Xiangqiong

doi:10.1007/s11249-020-01324-7

Cited by 12 publications

(9 citation statements)

References 34 publications

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“…Therefore, the interfacial behavior of fGO-based emulsion at the liquid–solid interface can be characterized by a friction test. Emulsions are widely applied as lubricants in metal manufacturing process for their excellent film-forming properties and water-lubrication performance. ,, Therefore, the stable emulsion was prepared, and then the tribological test was conducted. The emulsion was observed using light microscopy and cryo-SEM.…”

Section: Resultsmentioning

confidence: 99%

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Study on the Liquid–Liquid and Liquid–Solid Interfacial Behavior of Functionalized Graphene Oxide

Shang

Zeng

et al. 2022

Langmuir

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With the rise of carbon neutrality, the applications of carbon-based materials are gaining considerable attention. Graphene oxide (GO) is a two-dimensional sheet with epoxy and hydroxyl groups on the basal plane and carboxyl groups at the edge. In order to change the oil/water (o/w) interfacial activity, GO was controlled and modified by dodecylamine to get two kinds of functionalized GOs (fGOs), named as basal plane-functionalized GO (bGO) and edge-functionalized GO (eGO), respectively. The interfacial tension measurement showed that fGOs could reduce more interfacial tension at the poly-α-olefin/water interface than those at synthetic esters or aromatic compounds/water interfaces. Besides, eGO can reduce more poly-α-olefin-4/water interfacial tension compared to bGO. The interfacial dilatational rheology of eGO and fatty alcohol polyoxyethylene ether-4 (MOA4) showed that MOA4 gradually replaced eGO at the interface with the increase of MOA4, until the interface was completely occupied. eGO and MOA4 complex emulsion exhibited the best friction-reducing performance at 250 rpm. The coefficient of friction (COF) curves of the emulsions with eGO showed two platforms, with the COF reduced by 37.42% at the most. The rheological results of emulsions showed that the addition of eGO increased the elasticity of the emulsion. Emulsions showed shear-thinning and friction-thickening properties, which make it easier for the emulsion to form a lubricating film on the metal surface. Our research results suggested that the functionalization on the edge of GO will change the interfacial properties significantly, which have widespread applications in the encapsulation of active materials, surface protection, adsorption, and separation of pollutants.

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Section: Resultsmentioning

confidence: 99%

“…lubricants in metal manufacturing process for their excellent film-forming properties and water-lubrication performance. 30,59,60 Therefore, the stable emulsion was prepared, and then the tribological test was conducted. The emulsion was observed using light microscopy and cryo-SEM.…”

Section: Methodsmentioning

confidence: 99%

Study on the Liquid–Liquid and Liquid–Solid Interfacial Behavior of Functionalized Graphene Oxide

Shang

Zeng

et al. 2022

Langmuir

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“…The alkylation of GO improves its interfacial property and broadens the types of the emulsified oil. In our previous work [119], we prepared GO-based Pickering emulsion as water-based cutting fluid through a combination of functionalized GO and commercial cutting fluids. The tribology tests proved that the performance is diverse and is influenced by the structure of the functionalized GO and the type of the commercial cutting fluids.…”

Section: Application Of Go In Water-based Cutting Fluidsmentioning

confidence: 99%

Water lubrication of graphene oxide-based materials

Xue

Guo

et al. 2021

Friction

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Water is as an economic, eco-friendly, and efficient lubricant that has gained widespread attention for manufacturing. Using graphene oxide (GO)-based materials can improve the lubricant efficacy of water lubrication due to their outstanding mechanical properties, water dispersibility, and broad application scenarios. In this review, we offer a brief introduction about the background of water lubrication and GO. Subsequently, the synthesis, structure, and lubrication theory of GO are analyzed. Particular attention is focused on the relationship between pH, concentration, and lubrication efficacy when discussing the tribology behaviors of pristine GO. By compounding or reacting GO with various modifiers, amounts of GO-composites are synthesized and applied as lubricant additives or into frictional pairs for different usage scenarios. These various strategies of GO-composite generate interesting effects on the tribology behaviors. Several application cases of GO-based materials are described in water lubrication, including metal processing and bio-lubrication. The advantages and drawbacks of GO-composites are then discussed. The development of GO-based materials for water lubrication is described including some challenges.

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“…In additional, more and more novel additives are used in emulsions. [6][7][8][9] Therefore, effective additives play an irreplaceable role in the domain of emulsions.…”

Section: Introductionmentioning

confidence: 99%

“…In order to resolve the above problems of phosphate esters, some novelty phosphate esters derivatives by introduction of sulfur, nitrogen, boron and other elements was researched and commercialization for further improving their performance. In additional, more and more novel additives are used in emulsions 6–9 . Therefore, effective additives play an irreplaceable role in the domain of emulsions.…”

Section: Introductionmentioning

confidence: 99%

Tribological performance of protic ionic liquids containing dibutyldithiophosphate as lubricating additives in O/W emulsions

Zhao

Wang

2022

Lubrication Science

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A series of protic ionic liquids (PILs) containing dibutyldithiophosphate were simply synthesised and used as lubricant additive in base emulsion. The physico‐chemical and lubricating properties of PILs in emulsion were systematically investigated. The stability of prepared emulsions containing PILs were similar with base emulsions by particle size distribution tests. Compared with traditional additive of polysulfide, the PILs in emulsion exhibited superior lubricating properties under harsh conditions. Surprisingly, the oil‐miscible O‐PILs in emulsion showed better friction and wear reduction than water‐miscible T‐PILs in emulsion. The stable protective films formed on the steel surface by results of scanning electron microscope and X‐ray photoelectron spectroscopy were the main reason for the preferable performance.

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The Enhanced Lubrication of Water-Based Cutting Fluid by Functionalized GO

Cited by 12 publications

References 34 publications

Study on the Liquid–Liquid and Liquid–Solid Interfacial Behavior of Functionalized Graphene Oxide

Study on the Liquid–Liquid and Liquid–Solid Interfacial Behavior of Functionalized Graphene Oxide

Water lubrication of graphene oxide-based materials

Tribological performance of protic ionic liquids containing dibutyldithiophosphate as lubricating additives in O/W emulsions

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