Open AccessStudies on the anti-oxidative ability of quinones in natural ester based insulating liquids for transformers
Author(s) -
Miao Zhang,
Shengwei Cai,
Cheng Chen,
Huajun Guo,
M. Shao,
Hui Li,
Juanjuan Yin,
Jiangbo Chen,
Guochuan Yin
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/467/1/012066
Subject(s) - oxidative phosphorylation , chemistry , organic chemistry , biochemistry
Due to the unsaturated olefinic structure of natural esters, their antioxidation ability is generally poorer than that of the mineral oils, thus certain antioxidants were commonly added as the additives to improve the oxidative stability of natural ester for their service as transformer oils. The present study reported the influences of adding quinones as additives on the oxidative stability of versatile natural esters. It was found that, under the accelerated oxidation conditions, added quinones could improve the oxidative stability of these tested natural esters through decreasing their acidic values, viscosity increase and dielectric losses to certain extent, thus providing a new category of antioxidants to improve the oxidative stability of natural ester based transformer oils.