A double-sided directional Janus structure heat-conducting uniform heating film and a preparation method thereof

Abstract

The present application relates to the technical field of functional film material, and particularly relates to a double-sided directional Janus structure heat-conducting and heat-distributing film and a preparation method thereof. The preparation method of the double-sided directional Janus structure heat-conducting and heat-distributing film comprises the following steps: configuring a carbon fiber dispersion liquid; directional forming of the carbon fiber dispersion liquid, and protruding at least part of the carbon fibers in the carbon fiber directional layer from the upper surface of the carbon fiber directional layer; configuring a graphene dispersion liquid; directional forming of the graphene dispersion liquid after dropping the graphene dispersion liquid on the upper surface of the directional carbon fiber film, and interpenetrating at least part of the carbon fibers protruding from the upper surface of the carbon fiber directional layer in the interior of the graphene directional layer. The double-sided directional Janus structure heat-conducting and heat-distributing film provided by the present application can make the heat-conducting material have high in-plane thermal conductivity and high inter-plane thermal conductivity, thereby solving the problems of uneven heat distribution and difficult heat dissipation of local hot spots in the heat dissipation of electronic devices.

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