NDLI: Effect of water absorption on the growth of trees in composite insulation

Content Provider	IEEE Xplore Digital Library
Author	Abder-Razzaq, M. Auckland, D.W. Varlow, B.R.
Copyright Year	1996
Description	Author affiliation: Dept. of Electr. Eng., Manchester Univ., UK (Abder-Razzaq, M.)
Abstract	A study of the effect of absorbed water on the growth and configuration of electrical trees in composite insulation is described. Point-plane specimens were manufactured using clear polyester resin with a layer of reinforcing material cast midway between the electrodes. The trees were grown to demonstrate the response of composite materials to these trees under wet and dry conditions. The relationship between the barrier type and its resistance to tree growth when the composite had been subjected to water immersion was investigated. The mechanical strength of adhesion between the reinforcing material and the surrounding resin was measured for dry and wet specimens using standard mechanical tests. The effect of water absorption, both on tree growth and mechanical properties, was conducive to the water acting as a plasticising agent. To confirm this hypothesis comparative specimens containing 50% of a plasticising polyester were also studied and comparative observations made.
Starting Page	766
Ending Page	769
File Size	311032
Page Count	4
File Format	PDF
ISBN	0780335805
DOI	10.1109/CEIDP.1996.564621
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-10-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Absorption Trees - insulation Resins Water Dielectrics and electrical insulation Manufacturing Electrodes Composite materials Adhesives Electrical resistance measurement
Content Type	Text
Resource Type	Article

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