Improvement of Tracking and Erosion Behavior of Outdoor Insulation with a New Polymeric Alloy

Conference: Grenzflächen in elektrischen Isolierstoffen - ETG-Fachtagung
03/08/0000 - 03/09/2005 at Hanau

Proceedings: Grenzflächen in elektrischen Isolierstoffen

Pages: 5Language: englishTyp: PDF

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Ehsani, M.; Morshedian, J.; Bakhshandeh, G. R. (Iran Polymer and Petrochemical Institute, Tehran, Iran)
Borsi, H.; Gockenbach, E. (Institute for Electric Power Systems (Schering-Institute), University Hannover, Germany)

Tracking and erosion resistances of high temperature vulcanizing (HTV) silicone rubber, ethylene-propylene diene monomer (EPDM), blend of silicone-EPDM, and a new polymeric alloy were evaluated after being aged by the stress of water salinity and UV radiation. Silicone rubber insulators suffer from tracking and erosion resistance. New polymeric alloy shows an excellent resistance to electrical discharge on pollution environments in comparison to silicone rubber, EPDM, and blend of them. UV stress deteriorated the surface of EPDM, thereby reducing the tracking and erosion resistance of it. Water salinity reduced tracking and erosion resistance in silicone rubber. The losses of hydrophobicity of polymeric materials during UV aging have been also studied in this paper.