Title :
Thermostimulated depolarization currents in thermally aged polyethylene terephthalate (PET) films
Author :
Gubanski, A. ; Gubanski, S.M.
Author_Institution :
Inst. of Electr. Eng. Fundamentals, Tech. Univ. of Wroclaw, Poland
Abstract :
Thermal aging of the polyethylene terephthalate film influences its thermostimulated depolarization current spectra. The dynamics of the process was studied. Of the three major relaxation mechanisms occurring, the space charge relaxation, appearing above 380 K, shows a complex and strong dependence on the temperature and time of aging. This dependence can also be related to changes of other macroscopic properties of the film
Keywords :
ageing; dielectric properties of solids; dielectric relaxation; organic insulating materials; polymer films; thermally stimulated currents; PET films; relaxation mechanisms; space charge relaxation; thermal ageing; thermostimulated depolarization current spectra; Aging; Conducting materials; Dielectric materials; Plastic films; Polarization; Polyethylene; Polymers; Positron emission tomography; Space charge; Temperature dependence;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38400
