Fat mimicking compounds as grease thickeners in Poly(ethylene glycol)/water: Adopting the solution from history

Shetty, Pramod; Mu, Liwen; Shi, Yijun

doi:10.1016/j.jcis.2020.06.039

Cited by 5 publications

(3 citation statements)

References 74 publications

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“…Moreover, the addition of a solid lubricant to the formulation did not affect the shear flow properties because the behavior was closed to that of the commercial grease. The viscosity of both greases [Figure 6(b)] decreased as the shear rate increased, revealing a shear thinning (pseudoplastic) behavior of gel-like lubricants (Shetty et al , 2019; Mohamed et al , 2020; Shetty et al , 2020).…”

Section: Resultsmentioning

confidence: 99%

Laboratory evaluation of a nanostructured lubricating grease for tram runflat tires

Pérez Giraldo,

Vasquez,

Toro

et al. 2024

ILT

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Purpose This paper aims to develop a stable gel-type lubricant emulating commercial conditions. This encompassed rheological and tribological assessments, alongside field trials on the Medellín tram system. Design/methodology/approach The gel-type lubricant with graphite and aluminum powder is synthesized. Rheological tests, viscosity measurements and linear viscoelastic regime assessments are conducted. Subsequently, tribological analyses encompassing four-ball and twin disc methods are executed. Finally, real-world testing is performed on the Medellín tram system. Findings An achieved lubricant met the stipulated criteria, yielding innovative insights into the interaction of graphite and aluminum powder additives under varying tests. Originality/value Novel findings are unveiled regarding the interaction of graphite and aluminum powder additives in tribological, rheological and real-world trials. In addition, the wear behavior of polymers is observed, along with the potential utilization of such additives in tramway systems.

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Section: Resultsmentioning

confidence: 99%

Laboratory evaluation of a nanostructured lubricating grease for tram runflat tires

Pérez Giraldo,

Vasquez,

Toro

et al. 2024

ILT

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“…The tribological results revealed a significant reduction in friction (35%-58% reduction) and wear (29%-41% reduction). 27 The PAO oil-based lithium grease doped with CaCO 3 nanoparticles (5.0 wt%) exhibited excellent antifriction (AF), antiwear (AW) and loadcarrying capacity. 28 Chen et al investigated the effect of solid additives (such as PTFE, MoS 2 and graphite) on the tribo-performance of PAO 40 thickened with attapulgite/ bentonite clay grease.…”

Section: Introductionmentioning

confidence: 99%

“…The grease samples were formulated with dextrin as a thickener and a blend of PEG 200 and water as the base fluid. The tribological results revealed a significant reduction in friction (35%–58% reduction) and wear (29%–41% reduction) 27 . The PAO oil‐based lithium grease doped with CaCO 3 nanoparticles (5.0 wt%) exhibited excellent antifriction (AF), antiwear (AW) and load‐carrying capacity 28 .…”

Section: Introductionmentioning

confidence: 99%

Tribological evaluation of PAO 100 oil‐based lithium greases with chemically functionalized nanoadditives

Kumar

Harsha

Rawat

2023

Lubrication Science

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The lubricating greases employed in this study were formulated with polyalphaolefin (PAO) 100 as the base oil and 12‐lithium hydroxystearate as the thickener. The sol–gel method was used to produce the LaF3 nanoadditives. The oleic acid‐treated LaF3 (i.e., OA‐LaF3) and carboxylic acid‐treated MWCNTs (i.e., COOH‐MWCNTs) were blended in the formulated grease samples and used as nanoadditives. The detailed microstructural and chemical properties of chemically treated nanoadditives were investigated using HR‐TEM, XRD, FTIR and XPS analyses. Using a four‐ball tester, the effect of different concentrations of nanoadditives on the tribo‐performance of greases was investigated. Tribo‐test results revealed the role of nanoadditives in PAO‐based grease lubrication performance. COOH‐MWCNTs and OA‐LaF3 nanoadditives outperformed PAO grease in terms of physicochemical and tribo‐performance for steel‐steel tribo‐pair. The improved tribo‐performance is attributed to the formation of tribo‐film on the contact interfaces via nanoadditives. The development of tribo‐film was confirmed by XPS analysis of worn surfaces.

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Biolubricant

Cao,

Matsakas,

Zhang

et al. 2023

Sustainable Production Innovations

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Fat mimicking compounds as grease thickeners in Poly(ethylene glycol)/water: Adopting the solution from history

Cited by 5 publications

References 74 publications

Laboratory evaluation of a nanostructured lubricating grease for tram runflat tires

Laboratory evaluation of a nanostructured lubricating grease for tram runflat tires

Tribological evaluation of PAO 100 oil‐based lithium greases with chemically functionalized nanoadditives

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