Title :
Trap density as an indication of electrical ageing degree in polymers
Author :
Xinsheng, Wang ; Yongqing, Huang ; Demin, Tu
Author_Institution :
Electr. Insulation Res. Inst., Xi´´an Jiaotong Univ., China
Abstract :
With PP and PE film as samples, the chemical groups, free radicals, micro pores and trap densities during the electrical ageing process in vacuum, air, and corona are measured in this paper. It is shown in test results that the variation of characteristic peaks of groups in the IR spectrum, and free radicals are similar to that of trap densities. It is suggested that trap densities can be used an an indication of electrical ageing degree in polymers. Finally, the mechanism of trap creation and ageing breakdown in polymers is discussed
Keywords :
ageing; defect states; electric breakdown; electric strength; free radicals; insulation testing; life testing; organic insulating materials; polyethylene insulation; polymer films; polymer structure; surface potential; IR spectrum; ageing breakdown; characteristic peaks; chemical groups; corona; electrical ageing degree; free radicals; micropores; polyethylene film; polymers; polypropylene film; test results; trap creation; trap densities; Aging; Chemicals; Corona; Dielectric breakdown; Dielectrics and electrical insulation; Electrodes; Electron traps; Polymers; Testing; Voltage;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-1307-0
DOI :
10.1109/ICPADM.1994.414117
