Title :
Influence of thermal and UV aging on electroluminescence of polypropylene films
Author :
Jonsson, J. ; Rånby, B. ; Laurent, C. ; Mayoux, C.
Author_Institution :
Dept. of Polymer Technol., R. Inst. of Technol., Stockholm, Sweden
fDate :
2/1/1996 12:00:00 AM
Abstract :
Polymer aging appears to be an important factor which affects the electroluminescence of polyolefins subjected to a homogeneous AC field. We investigate the influence on electroluminescence emission of thermal and UV aging of commercial polypropylene films for capacitor application. Chemical and morphological changes of the materials are studied as function of aging conditions. Correlation is found between material oxidation and electroluminescence. Oxidation reduces the level of electroluminescence but does not change the spectral distribution of the light, thereby indicating that the luminescence centers are not the carbonyl groups
Keywords :
ageing; capacitors; dielectric thin films; electroluminescence; heat treatment; organic insulating materials; oxidation; polymer films; radiation effects; UV aging; aging conditions; capacitor application; chemical changes; electroluminescence; homogeneous AC field; luminescence centers; material oxidation; morphological changes; polymer aging; polyolefins; polypropylene films; spectral distribution; thermal aging; Aging; Capacitors; Chemicals; Dielectric materials; Dielectric measurements; Electroluminescence; Oxidation; Polymer films; Temperature; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
