Electrical performance of polymeric insulating materials under accelerated aging in a fog chamber

R. S. Gorur, E. A. Cherney, R. Hackam, T. Orbeck

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

A comparative study of the AC (60-Hz) surface aging in a fog chamber is reported on cylindrical rod samples of high-temperature vulcanized (HTV) silicone rubber and ethylene propylene diene monomer (EPDM) rubber containing various amounts of alumina trihydrate (ATH) and/or silica fillers. In low-conductivity (250 μS/cm) fog, silicone rubber performed better than EPDM samples, whereas in high-conductivity (1000 μS/cm) fog, the order of performance was reversed. The mechanisms by which fillers impart tracking and erosion resistance to materials is discussed as influenced by the experimental conditions of the accelerate aging tests. Surface studies by ESCA (electron spectroscopy for chemical analysis) demonstrate that the hyrophobicity of silicone rubber, despite the accumulation of surface contamination, can be attribute to migration of low-molecular-weight polymer chains and/or mobile fluids, such as silicone oil.

Original languageEnglish (US)
Pages (from-to)1157-1164
Number of pages8
JournalIEEE Transactions on Power Delivery
Volume3
Issue number3
DOIs
StatePublished - Jul 1988
Externally publishedYes

Fingerprint

Insulating materials
Silicones
Rubber
Aging of materials
Fog
Polymers
Propylene
Fillers
Ethylene
Monomers
Hydrated alumina
Electron spectroscopy
Erosion
Contamination
Molecular weight
Silica
Fluids
Chemical analysis
Temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Electrical performance of polymeric insulating materials under accelerated aging in a fog chamber. / Gorur, R. S.; Cherney, E. A.; Hackam, R.; Orbeck, T.

In: IEEE Transactions on Power Delivery, Vol. 3, No. 3, 07.1988, p. 1157-1164.

Research output: Contribution to journalArticle

Gorur, R. S. ; Cherney, E. A. ; Hackam, R. ; Orbeck, T. / Electrical performance of polymeric insulating materials under accelerated aging in a fog chamber. In: IEEE Transactions on Power Delivery. 1988 ; Vol. 3, No. 3. pp. 1157-1164.
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