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- W4312704611 abstract "Power electronic devices fabricated from epoxy composites have good electrical insulation properties. Facing the problem of severe heat generation due to the increased integration of devices, it is important to improve the thermal conductivity of epoxy composites for practical applications. In order to reduce the interfacial thermal resistance between filler and epoxy resin, we report a method to improve the compatibility between filler and resin matrix and reduce the scattering of phonons at the interface between filler and resin by coating SiO <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</inf> on the surface of Fe <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</inf> O <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>4</inf> . Also, since the potential barrier between SiO <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</inf> and resin matrix is smaller than that between Fe <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</inf> O <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>4</inf> and resin, the electrons is less likely to accumulate at the interface leading to local electric field distortion, and the breakdown voltage of the composite is thus enhanced. The results show that the thermal conductivity is increased by up to 320% at low filler load (30 wt%) compared with the pure epoxy resin without filler, and the breakdown voltage of the thickest SiO <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</inf> -coated sample is increased by 203% compared with the thinnest sample, which effectively reduces the interfacial thermal resistance between Fe <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</inf> O <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>4</inf> and resin and increases the breakdown voltage of the composite." @default.
- W4312704611 created "2023-01-05" @default.
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- W4312704611 date "2022-09-25" @default.
- W4312704611 modified "2023-09-29" @default.
- W4312704611 title "Study on Thermal Conductivity and Breakdown Strength of Core-shell Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Enhanced Epoxy Composites" @default.
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- W4312704611 doi "https://doi.org/10.1109/ichve53725.2022.9961724" @default.
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