Abstract
This paper presents the results of the study on the performance of organo-montmorillonite (OMMT) nanofillers in silicone rubber under high voltage application focusing on the ability of the OMMT to retard the growth of electrical tree in silicone rubber. Treeing experiments were conducted at a ramp ac voltage of 0.5 kV per second on unfilled silicone rubber samples as well as filled silicone rubber nanocomposites with 1 % weight percentage of OMMT. Tree inception voltage as well as tree length were observed on the filled and unfilled samples. In addition the morphological characteristics of the smaples were investigated using Field Emission Scanning Electron Microscopy (FESEM). The result of this study revealed that OMMT inhibited electrical tree growth thus suggesting OMMT can be a potential material for use as filler in polymeric insulations for tree growth retardation.
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