Title :
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
fDate :
29 Oct-2 Nov 1989
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;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1989. Annual Report., Conference on
Conference_Location :
Leesburg, VA
DOI :
10.1109/CEIDP.1989.69564
