The loss and recovery of hydrophobicity of RTV silicone rubber insulator coatings

Journal Article · Sun Jul 01 04:00:00 EDT 1990 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/61.57993· OSTI ID:6561832

Kim, S H; Cherney, E A; Hackam, R ^[1]

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1. Dept. of Electrical Engineering, Univ. of Windsor, Windsor, Ontario (CA)

The results of a study on the loss and recovery of hydrophobicity of room temperature vulcanizing (RTV) silicone rubber insulator coatings in a salt-fog chamber are reported. These new results complement those previously reported on the ability of the coatings to suppress leakage current and insulator flashover. The temporary loss of hydrophobicity caused by dry band arcing and the recovery of hydrophobicity which follows is studied in depth. The gradual loss of hydrophobicity as determined from the leakage current and the contact angle measurements is shown to be related to the physical changes to the coating brought about by dry-band arcing.

• OSTI ID: 6561832
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA) Vol. 5:3; ISSN 0885-8977; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240300* -- Power Transmission Lines & Cables-- (1990-)
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
COATINGS
CURRENTS
ELASTOMERS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
EQUIPMENT
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SILICON COMPOUNDS
POLYMERS
PROTECTIVE COATINGS
RUBBERS
SILICONES
SILOXANES