NDLI: Experimental model of a quartz/epoxy interface submitted to a hygrothermal ageing: A dielectric characterization

Content Provider	IEEE Xplore Digital Library
Author	Rain, P. Brun, E. Guillermin, C. Rowe, S.
Copyright Year	2010
Description	Author affiliation: Schneider Electric, Grenoble, France (Brun, E.; Guillermin, C.; Rowe, S.) \|\| Grenoble Electrical Engineering lab (G2Elab), University of Grenoble, G-INP, CNRS, UJF, Grenoble, France (Rain, P.)
Abstract	To investigate the hygrothermal ageing of silica/epoxy interfaces in a filled epoxy resin, a macroscopic experimental model of such interfaces has been designed. It consisted of coplanar interdigitated electrodes deposited on a quartz substrate and moulded in epoxy resin. The dielectric properties were followed at 80°C and 80% relative humidity. These properties have been compared with the evolutions under the same conditioning of sheets and mouldings of the unfilled resin. Comparisons show that the resistance of the interdigitated sample was not due to the water-enhanced resin conductivity but to the conductivity of an interphase, which has been quantified. If the interphase is modeled as a uniform water layer at the quartz/resin interface, an estimation of the water thickness in the micrometer can be deduced from the dielectric measurements. This order of magnitude can be useful to understand prebreakdown phenomena resulting from a hygrothermal ageing of composite insulations.
Starting Page	1
Ending Page	4
File Size	159490
Page Count	4
File Format	PDF
ISBN	9781424479450
e-ISBN	9781424479443
e-ISBN	9781424479436
DOI	10.1109/ICSD.2010.5567948
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-04
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dielectrics Three dimensional displays Solids DH-HEMTs dielectric epoxy silica interface ageing aging hygrothermal water
Content Type	Text
Resource Type	Article

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