The Electrical Performance of Polymeric Insulating Materials under Accelerated Aging in a FOG Chamber

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

doi:10.1109/61.193898

The 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 journal › Article › peer-review

109 Scopus citations

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 accelerated aging tests. Surface studies by ESCA (Electron Spectroscopy for Chemical Analysis) demonstrate that the hydrophobicity of silicone rubber, despite the accumulation of surface contamination, can be attributed to migration of low molecular weight polymer chains and/or mobile fluids, such as silicone oil.

Original language	English (US)
Pages (from-to)	1157-1164
Number of pages	8
Journal	IEEE Transactions on Power Delivery
Volume	3
Issue number	3
DOIs	https://doi.org/10.1109/61.193898
State	Published - Jul 1988
Externally published	Yes

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/61.193898

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The Electrical Performance of Polymeric Insulating Materials under Accelerated Aging in a FOG Chamber

Abstract

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