Title :
Electrical conduction of polyethylene below and above its melting point
Author :
Pelissou, S. ; St-Onge, H. ; Wertheimer, M.R.
Author_Institution :
Inst. de Recherche d´´Hydro-Quebec, Varennes, Que., Canada
fDate :
6/1/1988 12:00:00 AM
Abstract :
The electrical conduction of low-density polyethylene (LDPE) has been investigated between 20°C and 150°C and up to 1 MV/cm. Special molded specimens and a self-compensating test cell were used; particular care has been taken in the control of experimental conditions. Absorption currents show broad maxima, while resorption currents display polarity reversal. Steady-state currents increase with a power law of the electrical field, and they tend to saturate at high fields and temperatures. Results are discussed in the framework of space-charge-limited conduction and dispersive hopping transport models
Keywords :
electrical conductivity of amorphous semiconductors and insulators; electrical conductivity of liquids; high field effects; hopping conduction; organic insulating materials; polymers; space-charge-limited conduction; 20 to 150 degC; LDPE; absorption currents; dispersive hopping transport; electrical conduction; high fields; melting point; molded specimens; polarity reversal; polyethylene; resorption currents; self-compensating test cell; space-charge-limited conduction; steady state currents; Absorption; Automatic testing; Cables; Dielectrics; Dispersion; Displays; Electrodes; Polyethylene; Temperature; Thermal variables measurement;
Journal_Title :
Electrical Insulation, IEEE Transactions on
