Surface recovery of silicone rubber used for HV outdoor insulation

J. W. Chang, R. S. Gorur

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

This paper reports on material characteristics responsible for hydrophobicity recovery leading to a high wet surface resistance in silicone rubbers used for outdoor HV insulation. The samples were obtained from new and artificially aged HV insulators using HTV silicone rubbers as weathershed and RTV silicone rubbers as a protective coating. The main facilities consist of a salt fog chamber for artificially aging the insulators and a scanning electron microscope (SEM) for material used. Results of practical significance that have emerge from this paper are hydrophobicity recovery due to diffusion of low molecular weight (LMW) silicone polymer chains, LMW chain regeneration, and hydrophobicity recovery is significantly affected by ambient temperature.

Original languageEnglish (US)
Pages (from-to)1039-1046
Number of pages8
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume1
Issue number6
DOIs
StatePublished - Dec 1994

Fingerprint

Silicones
Insulation
Rubber
Hydrophobicity
Recovery
Molecular weight
Surface resistance
Protective coatings
Fog
Electron microscopes
Aging of materials
Salts
Scanning
Polymers
Temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Surface recovery of silicone rubber used for HV outdoor insulation. / Chang, J. W.; Gorur, R. S.

In: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 1, No. 6, 12.1994, p. 1039-1046.

Research output: Contribution to journalArticle

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