Magnetic lubricating oils based on organosilicon nanofluids

Abstract

The results of studying tribotechnical and physicochemical properties of various liquids have proved applicability of a dispersion medium, which is based on organosilicon liquids, for producing new-generation magnetic lubricating oils. The paper gives recommendations for choosing a dispersed magnetic phase. There is an original approach to selecting surfactants for stabilization of a magnetic oil colloidal structure, taking into account their dielectric properties and the effect on friction. The paper describes technological features of the synthesis of lubricating oils based on polyethylsiloxane PES-5 and chlorphenylsiloxane KhS-2-1VV containing nanosized magnetite. It also investigates lubricating properties of magnetic oils based on oligodiethylsiloxane and oligomethyl(chlorophenyl)siloxane under various friction conditions and shows their specific features. It analyzes the influence of various additives and fillers on tribotechnical characteristics of magnetic oils. It also defines a different mechanism of additives effects on frictional contact properties. The results of magnetic oil tests determine the most promising compositions for practical use in tribounits. Finally, there are recommendations on practical application of optimal compositions of magnetic lubricating oils in traditional and perspective tribounits with various operational parameters.