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Surface Ageing of Dielectric Materials in a Controlled Atmosphere: a Raman Microprobe Study

Freebody, N and Vaughan, A S (2010) Surface Ageing of Dielectric Materials in a Controlled Atmosphere: a Raman Microprobe Study At 2010 Conference on Electrical Insulation and Dielectric Phenomena, United States. 17 - 20 Oct 2010. , pp. 54-57.

Record type: Conference or Workshop Item (Paper)

Abstract

This paper takes a novel approach to the problem of characterising electrical ageing in solid dielectrics through exsitu experiments that seek to reproduce the chemistry of electrical treeing in bulk. Plaque specimens of a range of polymers, including polyethylene, polystyrene, polyether ether ketone and silicone rubber, were subjected to surface ageing via corona discharge in air or in a closed cell where the atmosphere can be controlled and adjusted. The residual products on both the sample surface and the high voltage electrode were characterised by Raman microprobe spectroscopy and the resulting fingerprints were compared with those previously identified within electrical trees. Analysis of the electrodes aged in air and nitrogen revealed varying evidence of sp2 hybridized carbon, and fluorescence, both of which are products previously associated with the processes involved in electrical treeing. The significance of the results is discussed with respect to electrical treeing.

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More information

Published date: 17 October 2010
Additional Information: Event Dates: 17 - 20 October 2010
Venue - Dates: 2010 Conference on Electrical Insulation and Dielectric Phenomena, United States, 2010-10-17 - 2010-10-20
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 271636
URI: http://eprints.soton.ac.uk/id/eprint/271636
PURE UUID: ad68291f-a97a-440c-98a1-51753b797c98

Catalogue record

Date deposited: 18 Oct 2010 20:28
Last modified: 18 Jul 2017 06:40

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Contributors

Author: N Freebody
Author: A S Vaughan

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