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Carbon-based composite with high rebound resilience and high heat conductivity coefficient along thickness direction and preparation method of carbon-based composite
The invention relates to a preparation method of a carbon-based composite with high rebound resilience and high heat conductivity coefficient simultaneously along a thickness direction. Graphite sheets in expanded graphite are connected to one another by arrayed carbon nano tubes; gaps among the graphite sheets are filled with the arrayed carbon nano tubes; the heat conductivity coefficient is greater than or equal to 25W/ (m.K) along the thickness direction; and after the graphite sheets are compressed by 10%, the rebound rate is greater than or equal to 90%. The arrayed carbon nano tubes grow through ferrocene carbon source solution; ferrocene cracks into iron atoms which are adhered to the graphite sheets of the expanded graphite, the carbon source solution cracks into carbon atoms which are adhered to surfaces of the iron atoms, so that the arrayed carbon nano tubes grow among the graphite sheets of the expanded graphite, heat flow can be transferred among the graphite sheets in the expanded graphite by high heat conductivity of the carbon nano tubes, the graphite sheets can be oriented along a perpendicular hot-pressing direction, namely a horizontal direction, the arrayed carbon nano tubes are connected to one another in the thickness direction, the graphite sheets and the gaps of the expanded graphite are filled with the arrayed carbon nano tubes, and the carbon-based composite with the high rebound resilience and the high heat conductivity coefficient along the thickness direction is obtained.
Carbon-based composite with high rebound resilience and high heat conductivity coefficient along thickness direction and preparation method of carbon-based composite
The invention relates to a preparation method of a carbon-based composite with high rebound resilience and high heat conductivity coefficient simultaneously along a thickness direction. Graphite sheets in expanded graphite are connected to one another by arrayed carbon nano tubes; gaps among the graphite sheets are filled with the arrayed carbon nano tubes; the heat conductivity coefficient is greater than or equal to 25W/ (m.K) along the thickness direction; and after the graphite sheets are compressed by 10%, the rebound rate is greater than or equal to 90%. The arrayed carbon nano tubes grow through ferrocene carbon source solution; ferrocene cracks into iron atoms which are adhered to the graphite sheets of the expanded graphite, the carbon source solution cracks into carbon atoms which are adhered to surfaces of the iron atoms, so that the arrayed carbon nano tubes grow among the graphite sheets of the expanded graphite, heat flow can be transferred among the graphite sheets in the expanded graphite by high heat conductivity of the carbon nano tubes, the graphite sheets can be oriented along a perpendicular hot-pressing direction, namely a horizontal direction, the arrayed carbon nano tubes are connected to one another in the thickness direction, the graphite sheets and the gaps of the expanded graphite are filled with the arrayed carbon nano tubes, and the carbon-based composite with the high rebound resilience and the high heat conductivity coefficient along the thickness direction is obtained.
Carbon-based composite with high rebound resilience and high heat conductivity coefficient along thickness direction and preparation method of carbon-based composite
FENG WEI (Autor:in) / QIN MENGMENG (Autor:in) / FENG YIYU (Autor:in)
07.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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