Thermally conductive sheet
AssigneeSekisui Polymatech Co., Ltd.
InventorYasuyoshi Watanabe
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Abstract
A thermally conductive sheet is obtained by stacking a carbon fiber oriented thermally conductive layer and an electrically insulating thermally conductive layer, the carbon fiber oriented thermally conductive layer containing a carbon fiber powder, which has a fiber axis oriented in a sheet thickness direction and is contained in a polymer matrix, the electrically insulating thermally conductive layer having a heat conducting property and an electrical insulation property and containing an electrically insulating thermally conductive filler dispersed in a polymer matrix. This thermally conductive sheet has both a high heat conducting property and an electrical insulating property, is easy to be fixed to an object to be attached, and has excellent handleability.
Claims10
A thermally conductive sheet obtained by stacking a carbon fiber oriented thermally conductive layer and an electrically insulating thermally conductive layer,
- the carbon fiber oriented thermally conductive layer containing a carbon fiber powder, which has a fiber axis oriented in a sheet thickness direction and is contained in a polymer matrix,
- the electrically insulating thermally conductive layer having a heat conducting property and an electrical insulation property and containing an electrically insulating thermally conductive filler dispersed in a polymer matrix, and
- wherein a thermal conductivity (W) (unit:
- W/m·K) and a thickness (T) (unit:
- mm) of the electrically insulating thermally conductive layer satisfy a relationship represented by formula (1) below:
- 0<T≤0.20 W−0.19 formula (1).
Dependencies are inferred from the claim text.