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This paper reports on the heat erosion resistance of various silicone rubber compositions under infrared laser heating that simulates the dry band arcing phenomenon on outdoor insulation. The composites are made using a two-part addition cure silicone rubber, with various amounts of alumina, natural silica, or fumed silica, nano-or micron size, and different amounts of Tritontrade X-100 surfactant...
The paper presents results on eroded mass measurements for nanofilled silicone rubber by controlled infrared laser heating, which simulates hot spot heating by dry-band arcing on wet and polluted composite insulators. Improvement in dispersion by surface treatment of the nanofillers with surfactants and by calcination is demonstrated. Along with improved dispersion of the nanofillers, a significant...
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