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Revista de Chimie (Rev. Chim.), Year 2016, Volume 67, Issue 11,





Iosif Lingvay, Petru Budrugeac, Andreea Voina, Andrei CucoS, Hermina Moscaliuc
Comparative Study of the Thermo-Oxidative Stability
of Some Electro-insulating Oils

Abstract:

The simultaneous TG/DTG+DTA thermal analyses have been performed for assessment of thermal stability in air of two fresh mineral oils, a refined sunflower oil, an oil based on synthetic esters and an oil based on natural esters. The results show that the biodegradable vegetal oil exhibits a better thermo-oxidative stability than mineral oils, and, therefore this oil could be a raw material for preparation of environmental friendly oil useful in cooling of electrical equipments. It has been also investigated the effect of long-term operation in electrical transformers upon a mineral oil. Keywords: transformer oils, mineral oil, vegetable oil, thermal analyses, thermal stability


Issue: 2016, Volume 67, Issue 11
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