Graphite block material and preparation method thereof

Abstract

The invention discloses a graphite block material and a preparation method thereof. The graphite block material comprises two layers of graphite layer structures, wherein the first layer of graphite layer structure is anisotropic and arranged on the second layer of graphite layer structure; the relative high thermal conductive direction of the first layer of graphite layer structure is parallel to the surface of the second layer of graphite layer structure; and the two layers of graphite layer structures are carbonized to form a whole. The graphite block material is composed of two layers of graphite layer structures, the relative high thermal conductive direction of the first layer of the graphite layer structure is parallel to the surface of the second layer of the graphite layer structure, and the two layers of graphite layer structures are carbonized to form a whole, so that the two structures are almost in 'seamless' contact, the interface thermal resistance is very low, and the heat transfer effect is remarkable. According to the graphite block material, the two structures are arranged and burnt into a whole, so that the internal heat transfer effect of the graphite block material is good, and heat dispersing or heating performance is remarkable.

Description

technical field

[0001] The invention relates to a graphite material and a preparation method of the graphite material. Background technique

[0002] Graphite has good thermal and electrical properties and has a wide range of applications. In terms of microstructure, graphite crystal has a layered structure and is characterized by anisotropy, and its mechanical, electrical, and thermal properties are all anisotropic. Thermal conductivity is no exception. Anisotropic graphite materials have a high thermal conductivity direction and a low thermal conductivity direction perpendicular to it. The relatively high thermal conductivity direction is the main thermal conductivity direction of the graphite material. The grains of naturally formed graphite materials are relatively small, and there are no reports of macro-sized graphite single crystals in artificial graphite. Therefore, the graphite materials used in the macro are all graphite polycrystals, and there are always some part...

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