Kinetics of Charge Accumulation and Decay on Silicone Rubber/SiO₂Nanocomposite Surface

Abstract

-The accumulation and decay of surface charge on silicone rubber (SiR)/SiO 2 nanocomposites under a unipolar corona discharge field was investigated. The effect of the weight ratio of SiO 2 nanoparticles from 0.1 to 0.7 wt.% was studied. Attenuated total reflection infrared spectra of the SiR/SiO 2 nanocomposites indicated that the SiO 2 nanoparticles chemically and physically interacted with the SiR matrix. This facilitated the SiR chains in restricting the injection of surface charge into the bulk nanocomposite. SiR composites containing SiO 2 nanoparticles (especially that containing 0.1 wt.% SiO 2 ) exhibited significantly reduced surface discharge. This approach may have application in outdoor SiR electrical insulators.

Deposition of SiCxHyOzthin film on epoxy resin by nanosecond pulsed APPJ for improving the surface insulating performance

“…A substantial number of researches have been demonstrated that the surface modification can accelerate the surface charge dissipation and improve the insulation properties of epoxy resin [6][7][8][9][10]. The surface modification can be achieved by many chemical or physical methods, including direct fluorination [11][12][13], nanoparticles doping [14,15], electron beam irradiation [16,17], heat treatment [18] and Cr 2 O 3 coating treatment [7], etc. However, above methods are still difficult to be widely used in industrial applications due to expensive equipment, complex processes or exhaust gas emission.…”