Title :
Characteristics of interfacial space charge in several laminated dielectrics
Author :
Tanaka, Toshikatsu ; Uchiumi, Michihiro
Author_Institution :
Central Res. Inst. of Electr. Power Ind., Tokyo, Japan
Abstract :
Interfacial space charge in several laminated dielectrics was measured by the laser induced pressure pulse (LIPP) method. A low density polyethylene sheet was laminated by several kinds of materials such as ethylene vinyl acetate, ethylene propylene copolymers, ethylene propylene-diene terpolymers with the diene components of dicyclopentadiene and ethylene propylene diene terpolymers with 5-ethylidene-2-norbornane. Interfacial space charge formed in such dielectrics by application of dc voltage and its decay process are evaluated and analyzed in terms of permittivity and electrical conductivity of the materials used. Two or three decay time constants are obtained for each of the laminates and are correlated with the electrical and dielectric properties of the dielectrics used
Keywords :
composite insulating materials; composite material interfaces; laminates; polyethylene insulation; polymer blends; space charge; 5-ethylidene-2-norbornane; DC voltage application; Maxwell-Wagner theory; decay time constants; dicyclopentadiene; ethylene propylene copolymers; ethylene propylene-diene terpolymers; ethylene vinyl acetate; interfacial space charge; interfacial trapping model; laminated dielectrics; laser induced pressure pulse method; low density polyethylene sheet; permittivity; Charge measurement; Current measurement; Dielectric materials; Dielectric measurements; Optical materials; Optical pulses; Polyethylene; Pressure measurement; Pulse measurements; Space charge;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.704683
