Influence of irradiation crosslinking on time dependences of conduction and self‐heating in acetylene carbon black filled high‐density polyethylene composites

Abstract

ABSTRACT:The time dependences of electrical conduction and self-heating in high-density polyethylene/acetylene carbon black composites crosslinked with electron beam irradiation at three different dosages are studied in relation to voltage and ambient temperature. The characteristic decay current constant ( i ) and the exponential growth time constant for self-heating ( g ) are determined for the samples under voltages (U) above the onset voltage (U c ) of self-heating. The influence of crosslinking on the current decay dynamics, self-heating process, and amplitude of the resistance switching under field action are discussed.