Title :
Radiation effects in epoxy resin system: gamma rays, neutrons and high energy electrons
Author :
Fouracre, R.A. ; Al-Attabi, A. ; Banford, H.M. ; Given, Martin J. ; Tedford, D.J.
Author_Institution :
Centre for Electr. Power Eng., Strathclyde Univ., Glasgow, UK
Abstract :
Gamma irradiation has been shown to permanently affect the electrical properties of epoxy resin systems due either to degradation processes or to cross-linking. Thermally stimulated discharge (TSDC) techniques have shown a peak in the TSDC spectrum at Tg , with a monotonically increasing current thereafter. DC conductivity is also affected by gamma irradiation. The TSDC spectra of an epoxy resin and its DC characteristics are further investigated in the present work. Results on gamma-irradiated material (0.5 MGy from a 60Co source) and on gamma plus neutron irradiation are presented. Also measured are the effects of electron irradiation on the excess carrier decay
Keywords :
electron beam effects; gamma-ray effects; neutron effects; polymers; thermally stimulated currents; DC conductivity; TSDC spectrum; cross-linking; degradation processes; electrical properties; electron irradiation; epoxy resin system; excess carrier decay; gamma irradiation; neutron irradiation; thermally-stimulated discharge; Annealing; Current measurement; Electrons; Epoxy resins; Gamma ray effects; Inductors; Neutrons; Radiation effects; Temperature; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
DOI :
10.1109/CEIDP.1990.201329
