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

fYear

1990

fDate

28-31 Oct 1990

Firstpage

114

Lastpage

119

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 T_g, 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on

Conference_Location

Pocono Manor, PA

Type

conf

DOI

10.1109/CEIDP.1990.201329

Filename

201329