Rheological Properties of Polyolester Under an EHD Contact in Some Refrigerant Environments

This is the authors' abstract. We don't add key points for this paper.

EHD traction of polyol ester in some refrigerants is analyzed using the non-Newtonian theory, from which available rheological parameters are determined. Then the rheological parameters are studied in elation to refrigerant concentration. As a result, the viscosity pressure coefficient of the mixtures is inversely correlated with refrigerant concentration in terms of mole per volume, while the representative stress characterizing the non-Newtonian is positively correlated. When the viscous volume relating to the unit of viscous flow is plotted as a function of molecular volume of refrigerant/POE mixture, the relation between them is well described by a single line independent of kinds of refrigerants.