Preparation method of high thermal conductivity graphene thin film

A technology of high thermal conductivity graphite and graphene film, applied in the direction of graphene, chemical instruments and methods, nanotechnology for materials and surface science, etc., can solve the problems of destroying graphene's high electron mobility, unfriendly environment, etc. Achieve the effect of environmental friendliness, low energy consumption and high thermal conductivity
CN103803532AInactive Publication Date: 2014-05-21福建省辉锐材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
福建省辉锐材料科技有限公司
Publication Date
2014-05-21
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to the technical field of an organic semiconductor material, and provides a preparation method of a high thermal conductivity graphene thin film. The preparation method comprises the following steps: preparing expanded graphite; mixing the obtained expanded graphite and an organic solvent; carrying out ultrasound dissociation on an expanded graphite organic solvent mixed liquid so as to obtain a graphene microchip suspension liquid; and preparing a graphene thin film by using the graphene microchip suspension liquid. The preparation method has the following advantages that the preparation method is suitable for low-cost industrial large-scale production of the high thermal conductivity graphene thin film, does not refer to high temperature and high pressure and is low in energy consumption; the oxidation-reduction process is not adopted, the lattice structure of the graphene is not damaged, and the obtained product has high thermal conductivity; and meanwhile, as the oxidation-reduction process is not adopted, acid-base or other poisonous effluent is not generated, and the organic solvent can be repeatedly used and is environment-friendly.
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Description

technical field

[0001] The invention belongs to the technical field of organic semiconductor materials, and in particular relates to a preparation method of a graphene film with high thermal conductivity. Background technique

[0002] Thermally conductive graphite sheet, also known as graphite heat sink, is a brand-new heat-conducting and heat-dissipating material. It has a unique grain orientation and conducts heat evenly in two directions. The lamellar structure can well adapt to any surface and shield heat sources and components. Improves the performance of consumer electronics and is an excellent material choice for thermal management solutions. The thermally conductive graphite sheet has ultra-high thermal conductivity in the range of 150-1500W / m-K in the plane. The chemical composition of thermally conductive graphite material (Thermal Flexible Graphite sheet) is mainly a single carbon element.

[0003] At present, high thermal conductivity graphite sheets are mainly...

Claims

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