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A proper and controlled filler dispersion is the goal of each compound, and nanodielectrics are not an exception for this purpose. A method to avoid agglomeration and ensure a standard particle dimension is presented in this work. Graphene oxide has been dispersed into a thermoplastic polymer starting from standardized building-blocks made of polymeric matrix with a single controlled nano-interface...
Cross-linked polyethylene films have been coated with hybrid organic-inorganic transparent coatings formed through sol-gel reactions and containing small amounts (0.5 wt%) of graphene oxide (GO). Ageing in air at one temperature (120°C) slightly above the on-service one has been carried out in order to test the durability of XLPE substrate. The thermo-oxidative stability of the systems has been investigated...
The effect on partial discharge activity of the application of hybrid organic-inorganic nanostructured coating to XLPE insulation is investigated in this paper. Specimens having an embedded flat cavity were manufactured and coated with two different silica-based nanocoating obtained by sol-gel process. Aging tests under ac voltage were performed and partial discharge activity taking place in the cavity...
This paper deals with hybrid organic-inorganic coatings having the purpose to improve the electrical properties of host insulating materials. In particular, space charge behavior of coated XLPE specimens is investigated here as a function of temperature. Three different nanocoating designs are tested, showing promising results in terms of space charge reduction with respect to uncoated XLPE specimens...
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