AC aging of impregnated polypropylene films: Effect of oxygen

The mechanism of O/sub 2/ enhanced AC aging of impregnated PP (polypropylene) films is elucidated. Analysis by gas chromatography of the liquid and by FTIR (Fourier-transform infrared) of the polymer show an electrically enhanced oxidation rate of liquid and polymer. The electrical stress acts mainl...

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Main Authors: Gadoum, A., Gosse, B., Gosse, J.P.
Format: Conference Proceeding
Language:English
Subjects:
Accelerated aging
Breakdown voltage
Electrodes
Gas chromatography
Oxidation
Oxygen
Polymers
Power capacitors
Thermal degradation
Thermal stresses
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Gosse, B.
Gosse, J.P.
description The mechanism of O/sub 2/ enhanced AC aging of impregnated PP (polypropylene) films is elucidated. Analysis by gas chromatography of the liquid and by FTIR (Fourier-transform infrared) of the polymer show an electrically enhanced oxidation rate of liquid and polymer. The electrical stress acts mainly at the initiation step by creating the first radicals. The oxidation byproducts of the liquid do not influence the degradation rate, and AC aging of PP films is mainly due to the scission of macromolecular chains greatly enhanced by O/sub 2/.
doi_str_mv 10.1109/ICDL.1993.593986
format conference_proceeding
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Analysis by gas chromatography of the liquid and by FTIR (Fourier-transform infrared) of the polymer show an electrically enhanced oxidation rate of liquid and polymer. The electrical stress acts mainly at the initiation step by creating the first radicals. The oxidation byproducts of the liquid do not influence the degradation rate, and AC aging of PP films is mainly due to the scission of macromolecular chains greatly enhanced by O/sub 2/.</abstract><pub>IEEE</pub><doi>10.1109/ICDL.1993.593986</doi><tpages>6</tpages></addata></record>
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ispartof Proceedings of 1993 IEEE 11th International Conference on Conduction and Breakdown in Dielectric Liquids (ICDL '93), 1993, p.461-466
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Accelerated aging
Breakdown voltage
Electrodes
Gas chromatography
Oxidation
Oxygen
Polymers
Power capacitors
Thermal degradation
Thermal stresses
title AC aging of impregnated polypropylene films: Effect of oxygen
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