Influence of surface charge on DC flashover characteristics of epoxy/BN nanocomposites
作者： B. X. Du , Meng Xiao
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摘要: Epoxy is widely used in electronic and electrical devices because of its excellent insulation properties. The addition nanoparticles to epoxy could change the material structure then charge behaviors are altered as a consequence. accumulation surface may cause electric field distortion, which would lead flashover. In this paper, samples were made by dispersing nano-scale boron nitride (BN) particles with weight ratios 5, 10, 20, 30, 40 wt%. charged dc corona triode system using needle-plate electrodes. distribution charges was measured an electrostatic voltmeter effect on decay behavior studied. A flashover test carried out under stress between two finger-type characteristics relation charging also investigated. results showed that traps polymer, introduced added nanoparticles, accumulation. addition, occurred at lower voltage accumulated sample surface.
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