The electrical performance of silicone rubber insulating coatings in a salt-fog chamber

Author

Kim, S.H. ; Cherney, E.A. ; Hackam, R.

Author_Institution

Dept. of Electr. Eng., Windsor Univ., Ont., Canada

fYear

1989

fDate

29 Oct-2 Nov 1989

Firstpage

149

Lastpage

154

Abstract

The results of a study on the electrical performance of room-temperature vulcanizing (RTV) silicone rubber insulator coatings under accelerated aging in a salt-fog chamber are reported. The coatings are evaluated at a severe salt-fog condition and various electric stress levels. The temporary loss and recovery of hydrophobicity are studied. Fiberglass-reinforced plastic and ethylene propylene diene monomer rubber were tested for comparison with RTV. The gradual loss of hydrophobicity as measured by leakage current and contact angle measurements is shown to be related to the physical changes in the coating brought about by dry-band arcing

Keywords

ageing; electric breakdown of solids; environmental testing; insulating coatings; insulation testing; leakage currents; rubber; silicones; RTV; accelerated aging; contact angle measurements; dry-band arcing; elastomers; electric stress; electrical performance; ethylene propylene diene monomer rubber; fibreglass-reinforced plastic; hydrophobicity loss; leakage current; room temperature vulcanising silicone rubber; salt-fog chamber; silicone rubber insulating coatings; Accelerated aging; Coatings; Current measurement; Dielectrics and electrical insulation; Leakage current; Loss measurement; Optical fiber testing; Plastics; Rubber; Stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1989. Annual Report., Conference on

Conference_Location

Leesburg, VA

Type

conf

DOI

10.1109/CEIDP.1989.69538

Filename

69538