THE ANALYZES OF COPOLYMER SHELVIS USED AS VISCOSITY IMPROVERS FOR SAE 10W-40 MINERAL OIL
Journal Title: PARIPEX-Indian Journal of Research - Year 2015, Vol 4, Issue 1
Abstract
Copolymer Shelvis is used as automotive for as viscosity improvers for multi-grade oils. The properties chemical and physical of copolymer are: physical state – solid, form – white solid blocks, colour – compressed crumbs, odourless, flashpoint > 150oC, insoluble in water, is not material hygroscopic, stable, density (15oC) – 0.272 g•cm-3 and none hazardous decomposition. In this study we established the physico-chemical analyzes vized of a copolymer Shelvis used as viscosity improvers for SAE 10W-40 mineral oil was: spectroscopy FTIR, thermo-gravimetric differential thermal analysis (TG-DTA). The diagram DSC evaluates the glass transition temperature. The thermogrames TG and DTA to evaluates their heat resistance of copolymer Shelvis. The kinetic parameters of copolymer hydrogenated poly (isoprene-co-styrene) were determination a method of multilinear regression analysis.
Authors and Affiliations
Ioana Stanciu
Keywords
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