Study of the Influence of Base Oil on the Lubricating Properties of Greases Obtained from Secondary Raw Materials

Abstract

The article presents the results of a study of the effect of base oil on the lubricating properties of plastic lubricants obtained from secondary raw materials - used lubricating oils and crushed solid polymers (LDPE and HDPE, PP). It was established that the viscosity of the base oil and the type of polymer thickener significantly affect both the colloidal stability of the plastic lubricant and its lubricating properties. The best lubricating properties were demonstrated by plastic lubricants obtained from SAE 85W-90 transmission base oils (ν100=30.0 mm2/s) thickened with crushed HDPE products. Moreover, when comparing these two-component greases with industrial analogues, it was found that their lubricating properties significantly exceed those of companies Agrinol Solidol G0, G1; Agrinol Fiol 1, 2) and are at the level of plastic lubricants Mobil Grease Special; NESTE MP Grease; Shell RETINAX Grease CMX1,2; Mobilux EP.