Title :
Electric strength, space charge and surface discharge characterization of nanostructured epoxy-silicate insulating materials
Author :
Montanari, G.C. ; Ciani, F. ; Testa, L. ; Guastavino, F. ; Coletti, G. ; Mulhaupt, R.
Author_Institution :
Electr. Eng. Dept., Bologna Univ., Italy
Abstract :
A set of surface discharge ageing procedures, space charge observations and dielectric strength measurements has been implemented on a type of insulating nanofilled epoxy-resin (nanostructured by compatibilised synthetic layered silicates) and on its non-filled base resin. Promising improvements in the electrical behaviour of the nanofilled epoxy, particularly as concerns surface discharge endurance, were detected. Regarding space charge, it was found that its accumulation rate as a function of ageing time is lower for the nanostructured resin. Finally, the nanofilled material evidenced a highly homogeneous behaviour of the dielectric strength data distribution.
Keywords :
ageing; electric strength; epoxy insulation; filled polymers; nanocomposites; silicon compounds; space charge; surface discharges; accumulation rate; base resin; electric strength; nanostructured epoxy-silicate insulating materials; space charge; surface discharge ageing; surface discharge endurance; synthetic layered silicates; Aging; Current measurement; Dielectric breakdown; Dielectric materials; Dielectric measurements; Dielectrics and electrical insulation; Nanostructured materials; Resins; Space charge; Surface discharges;
Conference_Titel :
Electrical Insulating Materials, 2005. (ISEIM 2005). Proceedings of 2005 International Symposium on
Conference_Location :
Kitakyushu
Print_ISBN :
4-88686-063-X
DOI :
10.1109/ISEIM.2005.193376
