THE ROLE OF SURFACE ACTIVE SILICONE DERIVATIVES AS ADDITIVES MODIFYING THE LUBRICITY OF WATER
Journal Title: Tribologia - Year 2012, Vol 243, Issue 3
Abstract
Silicone oils are used as lubricants or additives modifying lubricating properties of oil bases. However, these compounds are not water soluble. Therefore, the following silicone derivatives were selected as additives improving the lubricity of water: quaternary diamide polydimethylsiloxane (Quaternium-80) which is a cationic surfactant and an ethoxylated silicone that is a nonionic surfactant (Bis-PEG/PPG-20/20 Dimethicone). In this study, the motion resistance and wear of steel were determined in the presence of aqueous solutions of selected silicone derivatives as model lubricating substances. The tests were carried out using a T-02 testing apparatus produced by the Institute for Sustainable Technologies in Radom. It has been found that the cationic surfactant considerably decreases motion resistance in comparison with its nonionic equivalent in the low concentration range of the order of a few percent.
Authors and Affiliations
Marian W. Sułek, Małgorzata Zięba, Tomasz Wasilewski, Witold Sas
Keywords
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