Study of space-charge effects on dielectric breakdown of polymers by direct probing

Author

Suzuoki, Yasuo ; Matsukawa, Yohji ; Han, Sang-Ok ; Fujii, Akihiro ; Kim, Jong-Seok ; Mizutani, Teruyoshi ; Ieda, Mirai ; Yoshifuji, Naohisa

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Japan

Volume

27

Issue

4

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

758

Lastpage

762

Abstract

Direct and quantitative probing of space charge was carried out to study effects of space charge on dielectric breakdown of polymeric insulating materials. In poly-p-phenylene sulfide, in which dielectric-breakdown characteristics were explained in terms of space-charge formation, positive homo space charge was observed. The amount and the depth of space charge detected could explain the dependence of impulse breakdown strength on prestressing both qualitatively and quantitatively. In oxidized polyethylene, negative homo space charge was observed. This also agreed well with the prestress dependence of the breakdown characteristics. The injecting electrode during the prestressing or the region nearby was suggested to be important in the breakdown process of both materials

Keywords

electric breakdown of solids; electric strength; organic insulating materials; polymers; space charge; dielectric breakdown; direct probing; impulse breakdown strength; insulating materials; negative homo space charge; poly-p-phenylene sulfide; polyethylene; polymers; positive homo space charge; prestressing; space-charge effects; Conducting materials; Dielectric breakdown; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Optical pulses; Plastic insulation; Polyethylene; Polymers; Space charge;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.155793

Filename

155793