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United States Department of Agriculture

Agricultural Research Service

Research Project: NEW METALWORKING FLUIDS FROM BIO-BASED MATERIALS

Location: Bio-oils Research Unit

Title: Film-forming properties of vegetable oil-synthetic oil blends in elastohydrodynamic conditions

Authors
item Bantchev, Grigor
item Biresaw, Girma

Submitted to: Society of Tribologists and Lubrication Engineers
Publication Type: Abstract Only
Publication Acceptance Date: October 15, 2010
Publication Date: May 11, 2011
Citation: Bantchev, G.B., Biresaw, G. 2011. Film-forming properties of vegetable oil-synthetic oil blends in elastohydrodynamic conditions [abstract]. Society of Tribologists and Lubrication Engineers. p. 107.

Technical Abstract: There is a need for more environmentally-friendly and renewable lubricants that can be met by formulating lubricating blends with bio-based components. One of the most important properties of lubricants is its ability to form films between moving parts, such as those encountered in gears and bearings. In this presentation, we will report the study of the viscosity and elastohydrodynamic (EHD) film thickness properties of binary blends of vegetable oils with synthetic oil. The viscosities of the blends were correlated with the predictions of existing theoretical models. The EHD film thicknesses were used to calculate the pressure-viscosity coefficients of the blends. The results for the pressure-viscosity coefficients are compared with the literature data for similar oils. The film thickness of the blends displayed complex dependence on the composition of the blends and could not be fully described with the existing simple models.

Last Modified: 4/19/2014
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