Title :
Morphology Changes of Both Corona Aged Original and Nano-inorganic Hybrid Polyimide Films Characterized by SEM
Author :
Peihong, Zhang ; Lingyun, Gai ; Gang, Li ; Qingquan, Lei
Author_Institution :
Coll of Electr. & Electron. Eng., Harbin Univ. of Technol.
Abstract :
Morphology changes of both corona-aged original and nano-inorganic hybrid polyimide film were characterized by SEM. 4 kV power frequency voltage and 4 kV, 5 kHz square pulse voltage were applied to the specimen respectively. It was found that the honeycomb structure appeared on the aged surface of original film, and crack and some inorganic like substance exhibit on the aged surface of the nano-inorganic hybrid film. After square pulse corona aging, the surface of corona region was more scorching than that of after power frequency aging
Keywords :
ageing; corona; filled polymers; honeycomb structures; nanostructured materials; organic insulating materials; organic-inorganic hybrid materials; polymer films; scanning electron microscopy; surface cracks; SEM; crack; honeycomb structure; morphology; nanoinorganic hybrid polyimide films; power frequency voltage; pulse corona aging; Aging; Corona; Electrodes; Frequency; Polyimides; Scanning electron microscopy; Surface cracks; Surface discharges; Surface morphology; Voltage;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284318
