Abstract
The influence of the physical properties of a cross-linked polyester resin on its electrical treeing behaviour in the point-plane geometry is investigated. The physical properties of the resin were varied by post-curing, and these were characterized by thermal analysis and mechanical modulus measurements. Electrical trees were grown under constant geometry and stress conditions and their fractal dimension and initiation and propagation statistics determined. These were then correlated with the changes in the polymer network characteristics. Comparisons with recent stochastic modelling are also discussed briefly.
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