Lubricants and functional fluids from renewable sources

Wilson, Bill

doi:10.1108/00368799810781274

Cited by 86 publications

(47 citation statements)

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“…Vegetable oils primarily consist of triglycerides; [13][14][15] the triglycerol structure of vegetable oil makes it a strong competitor as a base stock for lubricants and functional fluids [16]. Vegetable oils are triglycerides in which C18 carboxylic acids are dominant.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Jatropha and Pongamia Oil Based Environmentally Friendly Cutting Fluids for Turning AA 6061

Jeevan

Jayaram

2018

Advances in Tribology

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Owing to the desirable properties of vegetable oils as cutting fluids, an attempt is made to explore the potentiality of plentifully available vegetable oils as a cutting fluid for turning AA 6061. Two nonedible vegetable oils, Jatropha and Pongamia, in their chemically modified (epoxidized) versions are used as straight cutting fluids. Cutting fluids are introduced to the machining zone with the aid of Minimal Quantity Lubrication (MQL) method. Taguchi's technique of orthogonal arrays is used to develop an effective design of experiments. The results obtained under epoxidized versions of Jatropha and Pongamia oils are compared with the results of mineral oil in terms of cutting forces and surface roughness. Experimental observations and statistical analysis show that, compared to mineral oil, the modified versions of vegetable oil-based cutting fluids are more effective in reducing the cutting forces and increasing surface finish. It is also observed that the modified Pongamia oil showed lesser flank wear compared to the other two tested oils.

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Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Jatropha and Pongamia Oil Based Environmentally Friendly Cutting Fluids for Turning AA 6061

Jeevan

Jayaram

2018

Advances in Tribology

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“…Vegetable oils primarily consist of triglycerides [23] [24]; the triacylglycerol structure in vegetable oil has molecules which arrange themselves in such a manner to make a closed packed monomolecular layer which enhanced the surface film, makes it a strong competitor as a base stock for MWFs and functional fluids [25] [26] [27]. The chemical composition and fatty acid profiles of vegetable oils (VO) are the primary reasons behind their performance as cutting fluid.…”

Section: Properties Of Vegetable Oilsmentioning

confidence: 99%

Tribological Properties and Machining Performance of Vegetable Oil Based Metal Working Fluids—A Review

Jeevan¹,

Jayaram²

2018

MME

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Lubricants are playing an important role in world industrial and economic development, mainly by reducing friction and wear in mechanical contacts. The outlook for eco-friendly MWFs for the next decade is 15% of global volume share. Due to ever increasing demand for environmentally acceptable products suitable for use as MWFs, vegetable oil-based MWFs are drawing the attention of researchers across the globe. Owing to the desirable properties of vegetable oils as cutting fluids, vegetable oil-based cutting fluids play an important role in conserving the environment by means of sustainability. This paper focuses on various vegetable oil being developed to promote biodegradable MWFs across the world. The performance of vegetable oils with respect to cutting and thrust force, tool wear, temperature, surface roughness in turning, drilling, milling and grinding a wide variety of materials are studied and reported. The review also throws light on the tribological behavior of vegetable oils that influence the lubricity in Metal working process. The review reveals that vegetable oils offer an alternative, eco-friendly and sustainable MFWs for the future of manufacturing.

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“…However, every year, worldwide, millions of tonnes of engine, industrial and hydraulic oils leak into the ground or waterways or are disposed of in the environment, with the well-known adverse effect on aquatic life. In order to minimize the contamination damage that petroleum-based products cause in the environment, there has been an increasing demand for environmentally acceptable products suitable for use as lubricants (Wilson, 1998). In this sense, a slow, but steady, movement toward the use of "environmentally friendly" or more readily biodegradable lubricants has been promoted during the last decade.…”

Section: Introductionmentioning

confidence: 99%

Rheology of oleogels based on sorbitan and glyceryl monostearates and vegetable oils for lubricating applications

Sánchez¹,

Franco²,

Delgado³

et al. 2011

Grasas y Aceites

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Oleogels based on sorbitan and glyceryl monostearates and different types of vegetable oils, potentially applicable as biodegradable alternatives to traditional lubricating greases, have been studied. In particular, the rheological behavior, by means of small-amplitude oscillatory shear (SAOS) measurements, and some lubrication performance-related properties (mechanical stability and tribological response) have been evaluated in this work. SAOS response and mechanical stability of these oleogels are significantly influenced by the type and concentration of the organogelator and the vegetable oil used in the formulations. Glyceryl monostearate (GMS) generally produces stronger gels than sorbitan monostearate (SMS). The use of low-viscosity oils, such as rapeseed and soybean oils, yields gels with significantly higher values of the linear viscoelastic functions than oleogels prepared with high-viscosity oils, i.e. castor oil. The rheological behavior of SMS-based oleogels also depends on the cooling rate applied during the gelification process. On the other hand, the oleogels studied present low values of the friction coefficient obtained in a tribological contact, although only some GMS/castor oil-based oleogels exhibit a suitable mechanical stability.<br><br>En el presente trabajo se han estudiado diferentes oleogeles, basados en monoestearatos de sorbitano y glicerilo y aceites vegetales, que podrían ser potencialmente empleados como alternativas biodegradables a las grasas lubricantes tradicionales. En concreto, se ha evaluado su comportamiento reológico, a través de ensayos en cizalla oscilatoria, y algunas propiedades relacionadas con su rendimiento en la lubricación, tales como su estabilidad mecánica y comportamiento tribológico. La respuesta reológica y la estabilidad mecánica de los oleogeles estudiados están significativamente influenciadas por el tipo y la concentración del agente gelificante y por el aceite vegetal empleado. Así, el monoestearato de glicerilo (GMS) produce, generalmente, geles más fuertes que el monoestearato de sorbitano (SMS). El uso de aceites de baja viscosidad, como los aceites de colza o de soja, dan lugar a geles con valores más altos de las funciones viscoelásticas lineales que los oleogeles preparados con aceite de ricino. El comportamiento reológico de los oleogeles de SMS depende, además, de la velocidad de enfriamiento durante la gelificación. Por otra parte, los oleogeles estudiados presentan bajos valores del coeficiente de fricción, determinado en un contacto tribológico, aunque sólo algunos oleogeles que contienen GMS y aceite de ricino muestran una estabilidad mecánica adecuada

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Lubricants and functional fluids from renewable sources

Cited by 86 publications

References 0 publications

Performance Evaluation of Jatropha and Pongamia Oil Based Environmentally Friendly Cutting Fluids for Turning AA 6061

Performance Evaluation of Jatropha and Pongamia Oil Based Environmentally Friendly Cutting Fluids for Turning AA 6061

Tribological Properties and Machining Performance of Vegetable Oil Based Metal Working Fluids—A Review

Rheology of oleogels based on sorbitan and glyceryl monostearates and vegetable oils for lubricating applications

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