DocumentCode :
1075255
Title :
Electrical Breakdown of Ethylene Copolymers
Author :
Hikita, M. ; Kanno, I. ; Ieda, M. ; Ishino, I. ; Doi, S. ; Sawa, G.
Author_Institution :
Department of Electrical Engineering Nagoya University, Nagoya, Japan
Issue :
2
fYear :
1987
fDate :
4/1/1987 12:00:00 AM
Firstpage :
175
Lastpage :
179
Abstract :
co was found that the electric strength FB of ethylene co-polymers containing optimum content of halogen compouns copigher than that of LDPE over a wide temperature range from -196 to 90°C, and that their conduction current was suppressed at the higher fields. It is thought that the introductioned comonomers with halogen groups into polyethylene suppresses the electron acceleration due to an increase of the scattering of conduction electrons, leading to an increase of FB which is determined by the electron avalanche breakdown. However, the reason for a fall of FB with halogen content at high content level is not yet clear. A tentative explanation is presented: Existence of high halogen content in the amorphous part of the ethylene chain gives rise to some kind of defects which arise, for example, from locally brittle structures or stereo hindrance due to strong dipole-dipole interaction, leading to a decrease of FB.
Keywords :
Acceleration; Dielectrics and electrical insulation; Electric breakdown; Electrons; Mie scattering; Petrochemicals; Polyethylene; Polymers; Temperature distribution; Voltage;
fLanguage :
English
Journal_Title :
Electrical Insulation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9367
Type :
jour
DOI :
10.1109/TEI.1987.298878
Filename :
4081385
Link To Document :
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