Electrical treeing initiation and propagation in silicone rubber nanocomposites

Electrical tree initiation voltage and tree propagation length for unfilled silicone rubber, silicone rubber nanocomposites filled with 1% and 3% of OMMT and SiO2 was presented in this paper. This study investigates the capabilities of OMMT and SiO2 in silicone rubber in order to inhibit the growth of electrical treeing. From the result of this study has indicated that in the filled nanocomposite sample, the OMMT acts as barrier to unfilled silicone rubber and silicone rubber filled with SiO2 because the capabilities to decreased the tree propagation length of electrical tree. This result revealed that OMMT could be used as filler in silicone rubber insulating material for the purpose of retarding electrical tree growth.

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