RESEARCH THERMODYNAMICS OF VISCOUS FLOW OF BASE OILS THAT ARE THE BASIS FOR LUBRICANT COMPOSITIONS

The thermodynamic characteristics of the process of viscous flow of mineral base lubricating oils (SGK grade AU, naphthenic T-110) and synthetic (Synfluid PAO 6 cSt) were found. It was found that the activation energy and the change in the activation entropy of the viscous flow of mineral oils, considered trade marks, are higher than that of synthetic oil. The obtained thermodynamic data made it possible to establish the mechanism of the flow of lubricating oils.