Direct observation of space charge distribution in polyethylene

Author

Mizutani, T. ; Suzuoki, Y. ; Furuta, T. ; Ieda, M. ; Suzuki, T.

Author_Institution

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

fYear

1989

fDate

29 Oct-2 Nov 1989

Firstpage

309

Lastpage

314

Abstract

The space charge behavior in PE (polyethylene) was investigated using the laser-induced pressure pulse (LIPP) technique and the piezoelectrically induced pressure step (PIPS) wave technique. Specimens used were 25-μm-thick films and 0.6- and 1-mm-thick plates of low-density PE nominally free from additives. The LIPP measurement was carried out on a spectrum which was polarized at 333 K for 15 min and subsequently short-circuited at room temperature. The PIPS measurement was carried out on a 25-μm-thick specimen under an applied field. Positive space charge was found to exist in the PE bulk, and negative space charge due to electron injection was dominant at high fields. Oxidation of PE was found to enhance electron and hole injection

Keywords

organic insulating materials; oxidation; polymer films; polymers; space charge; 0.6 mm; 1 mm; 15 min; 25 micron; 333 K; LIPP technique; PIPS technique; electron injection; hole injection; laser induced pressure pulse technique; low-density PE; oxidation; piezoelectrically induced pressure step wave technique; polyethylene; space charge distribution; Optical pulse generation; Optical pulses; Oxidation; Polyethylene; Power cables; Pressure measurement; Pulse measurements; Space charge; Space vector pulse width modulation; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1989. Annual Report., Conference on

Conference_Location

Leesburg, VA

Type

conf

DOI

10.1109/CEIDP.1989.69564

Filename

69564