Physical and Tribological Properties Degradation of Silicone Rubber Using <i>Jatropha</i> Biolubricant

Farfán-Cabrera, Leonardo Israel; Gallardo-Hernández, Ezequiel Alberto; Resendiz-Calderon, Cesar David; Rosa, C. Sedano-de la

doi:10.1080/10402004.2017.1386808

Cited by 12 publications

(6 citation statements)

References 22 publications

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“…The plant has a high oil content; it can grow on marginal lands in tropical and sub-tropical climates enabling an extensive oil source supply, and it is not considered as human feedstock [11,21]. It has been demonstrated that JO exhibits better tribological properties than other bio-oils, for example, rapeseed oil [10] and is compatible with different sealing elastomers from fuel and lubrication systems [22,23,24]. It has also been reported that the frictional coefficients are reduced by blending JO with mineral oils for different applications, namely, hydraulic fluids [25], engine oils [14], metal working fluids [26,27], automatic transmission fluids [28], drilling muds [29], etc.…”

Section: Introductionmentioning

confidence: 99%

Effects of Jatropha lubricant thermo-oxidation on the tribological behaviour of engine cylinder liners as measured by a reciprocating friction test

Farfán-Cabrera

Gallardo-Hernández

Perez‐González

et al. 2019

Wear

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Bio-lubricants have emerged as a potential and viable way to replace, totally or partially, mineral oils due to their effectiveness in the boundary lubrication regime for different applications, including, automotive engine operation. However, the effect of thermo-oxidation caused by the long-term use of the bio-lubricants on their tribological properties has been scarcely analyzed. In this work, the effect of thermo-oxidation of Jatropha oil (JO), an engine mineral oil (EMO) and a blend made up of 80%vol. EMO and 20%vol. JO (B20) on the tribological behavior of a simulated piston ring/engine cylinder liner interface was studied in reciprocating friction tests at 26 and 100°C. The oils were thermally oxidized and characterized in terms of carbonyl compounds, depletion of ZDDP additives, changes in kinematic viscosity and viscosity index. Friction coefficients, wear rates and scar morphologies were assessed. Thermo-oxidation resulted in significant viscosity increases in JO compared to EMO and B20. Also, it generated increased friction coefficients for JO and B20. However, they were lower than those for fresh and aged EMO. EMO increased the wear rate after thermo-oxidation in contrast to JO. Smearing was generated using most oil samples while severe scuffing was only produced by using fresh JO at 100°C.

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Section: Introductionmentioning

confidence: 99%

Effects of Jatropha lubricant thermo-oxidation on the tribological behaviour of engine cylinder liners as measured by a reciprocating friction test

Farfán-Cabrera

Gallardo-Hernández

Perez‐González

et al. 2019

Wear

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“…Taking into consideration the specifications from manufacturers, the silicone fulfilled all the requirements respecting admissible changes in hardness, Ford's being the most restrictive (−30 ShA). This material showed a lower decrease in hardness when aged (672 h) at room temperature [21]. It was the high temperature, rather than the oil type, that led to a decrease in the hardness of the silicone.…”

Section: Changes In Hardnessmentioning

confidence: 81%

Automatic Transmission Fluids in Electrified Transmissions: Compatibility with Elastomers

et al. 2022

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The location of the electric motor (EM) inside the transmission in an electric vehicle requires the compatibility of the automatic transmission fluids (ATFs) with the materials of the EM and the transmission. This work studies the compatibility of four conventional ATFs with three elastomers: fluoroelastomer (FKM), ethylene-propylene-diene monomer (EPDM), and vinyl-methyl silicone rubber (silicone). Changes in volume, hardness, tensile strength, and elongation at break of the elastomers after aging in the ATFs were measured, and additional Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric and derivative thermogravimetric (TGA and DTGA) tests were performed. The four ATFs showed high or medium compatibility with FKM and silicone, and low compatibility with EPDM. This low compatibility was related to changes in the composition and crystalline structure of the elastomer. The non-compatibility of the EPDM with the oils from Group III was also proven.

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“…It depends on the supplier, feed stocks, and production methods, which is line with the microalgae-based oil production challenges. -Guaranty of proper compatibility with machine materials [201][202][203], acceptable thermal oxidation stability and cold weather operation. These properties must be further evaluated and improved for each oil/lubricant meeting with stringent specifications before marketing.…”

Section: Challenges In the Microalgae-to-biolubricant Production And Usementioning

confidence: 99%

Microalgae Biomass as a New Potential Source of Sustainable Green Lubricants

et al. 2022

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Lubricants are materials able to reduce friction and/or wear of any type of moving surfaces facilitating smooth operations, maintaining reliable machine functions, and reducing risks of failures while contributing to energy savings. At present, most worldwide used lubricants are derived from crude oil. However, production, usage and disposal of these lubricants have significant impact on environment and health. Hence, there is a growing pressure to reduce demand of this sort of lubricants, which has fostered development and use of green lubricants, as vegetable oil-based lubricants (biolubricants). Despite the ecological benefits of producing/using biolubricants, availability of the required raw materials and agricultural land to create a reliable chain supply is still far from being established. Recently, biomass from some microalgae species has attracted attention due to their capacity to produce high-value lipids/oils for potential lubricants production. Thus, this multidisciplinary work reviews the main chemical-physical characteristics of lubricants and the main attempts and progress on microalgae biomass production for developing oils with pertinent lubricating properties. In addition, potential microalgae strains and chemical modifications to their oils to produce lubricants for different industrial applications are identified. Finally, a guide for microalgae oil selection based on its chemical composition for specific lubricant applications is provided.

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Physical and Tribological Properties Degradation of Silicone Rubber Using Jatropha Biolubricant

Cited by 12 publications

References 22 publications

Effects of Jatropha lubricant thermo-oxidation on the tribological behaviour of engine cylinder liners as measured by a reciprocating friction test

Effects of Jatropha lubricant thermo-oxidation on the tribological behaviour of engine cylinder liners as measured by a reciprocating friction test

Automatic Transmission Fluids in Electrified Transmissions: Compatibility with Elastomers

Microalgae Biomass as a New Potential Source of Sustainable Green Lubricants

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