Abstract
In this paper, essential properties that affect electrical insulation performance of epoxy micro composites were studied. In particular, the effect of adding co-filled micro sized fillers to epoxy composites were explored. The fillers considered in this study include 40 [um] BN, 22 [um] SiO₂, 5 [um] Al₂O₃ and 5 [um] TiO₂. For each composite, dielectric constant, dielectric loss, tracking resistance and breakdown field intensity were tested. When BN and SiO₂ particles were added, the dielectric constant and the dielectric loss increased. By co-filling TiO₂ and Al₂O₂ particles to the BN/Epoxy composite, a change in dielectric properties were observed. Different performance among epoxy composites were observed depending on characteristics of the co-filled filler. Experiment results demonstrated the effectiveness of epoxy composites with co-filled micro particles. Results of this research could contribute to optimized design of epoxy composites for improved insulation performance.
Published Version
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