Title :
Characterization of aging in polymeric insulation by thermally stimulated depolarization current measurements
Author :
Tirupattur, M.R. ; Gorur, R.S.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
The authors present the characterization of aging in polymers used for outdoor high-voltage insulation by the thermally stimulated depolarization (TSD) current technique. The materials evaluated include new, artificially aged and naturally aged samples of high-temperature-vulcanized (HTV) silicone rubber and ethylene-propylene rubber. Results of this technique are compared with the data obtained from techniques such as crossover voltage measurement (COV), energy dispersive X-ray (EDX) studies X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). It is shown that TSD can provide information at the molecular level which relates to aging
Keywords :
X-ray chemical analysis; X-ray diffraction examination of materials; ageing; high-voltage techniques; insulation testing; polymers; rubber; silicones; spectrochemical analysis; thermally stimulated currents; COV; EDX; FTIR; Fourier transform infrared spectroscopy; TSD technique; X-ray diffraction; XRD; crossover voltage measurement; energy dispersive X-ray; ethylene-propylene rubber; high temperature vulcanised silicone rubber; outdoor high-voltage insulation; polymer insulation ageing; thermally stimulated depolarization current; Aging; Dispersion; Fourier transforms; Infrared spectra; Plastic insulation; Polymers; Rubber; Voltage measurement; X-ray diffraction; X-ray scattering;
Conference_Titel :
Electrical Insulation, Conference Record of the 1992 IEEE International Symposium on
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-0649-X
DOI :
10.1109/ELINSL.1992.247031
