Title :
Influence of X- and gamma-irradiation on selected electrical properties of polyethylene terephthalate films
Author :
Gubanski, Adam ; Stankiewicz, Ryszard
Author_Institution :
Inst. of Electr. Eng. & Technol., Tech. Univ. of Wroclaw, Poland
Abstract :
Thermally stimulated depolarization currents (TSD) and measurements of permittivity, loss factor, and DC conductivity on X-ray and gamma-irradiated polyethylene terephthalate (PETP) films were investigated. The commercial ESTROFOL PETP film, 125 μm thick, was investigated. Samples were X- and gamma-irradiated with three different doses in different gaseous environments (air and N2) and the electrical properties were measured as a function of time. Applying partial heating techniques, a distribution of activation energies of relaxation processes, being responsible for ∝ and ρ peaks, was found
Keywords :
X-ray effects; dielectric depolarisation; dielectric losses; dielectric relaxation; electrets; gamma-ray effects; heat treatment; insulating thin films; permittivity; polymer films; thermally stimulated currents; 125 micron; DC conductivity; ESTROFOL PETP film; N2; X-ray irradiation; activation energies; air; electrets; electrical properties; gamma-irradiated; loss factor; partial heating techniques; permittivity; polyethylene terephthalate films; relaxation processes; thermally stimulated depolarization currents; Conductive films; Conductivity measurement; Current measurement; Electric variables measurement; Loss measurement; Permittivity measurement; Plastic films; Polyethylene; Thermal conductivity; Thermal factors;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167316
