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DETERMINATION OF THE ENERGY OF ACTIVATION OF THE SYNTHESIS OF MAGNETIC LUBRICANT NANOOILS BASED ON VISCOSIMETRIC STUDIES

DOI: 10.46573/2658-7459-2021-85-95

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Authors

A.N. Bolotov, O.O. Novikova, A.V. Novikov

Abstract

Equipment for experimental studies of the rheological behavior of magnetic nanofluids has been developed. It is indicated that the design of a rotational magnetic viscometer makes it possible to measure the standard characteristics of colloidal systems and to establish the structural features of liquids under shear stresses in a wide range of magnetic fields. A new method has been implemented to improve the antifriction and antiwear properties of magnetic nano-oils. It is proposed to estimate the activation energy of the chemical reaction of stabilization of colloidal systems using polymers based on the results of viscometric studies. The initial data for the calculation are experimental rheological curves taken at intermediate stages of the synthesis of polymer shells on dispersed particles in the process of obtaining magnetic nanofluids. The rate of the polymerization reaction was estimated as a function of temperature. It is noted that the results obtained will make it possible to obtain magnetic oils with specified rheological and tribotechnical properties.

Keywords

colloidal systems, magnetic nanofluid, magnetic lubricating nano-oils, viscometric studies, activation energy.