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Nanocrystalline and synthetic graphite non-adhesive composite material and preparation method thereof

A technology of nanocrystalline materials and synthetic graphite, applied in heat exchange materials, chemical instruments and methods, metal material coating processes, etc., can solve problems affecting heat dissipation performance, blocking heat transfer, heat resistance, etc. The effect of high thermal conductivity, reduction of intermediate adhesive materials, and high magnetic permeability

Inactive Publication Date: 2019-01-22
GUANGDONG SUQUN NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the heat resistance of the double-sided tape is on the left, and the double-sided tape is in the middle, which will also block the transfer of heat to a certain extent, thus affecting the overall heat dissipation performance

Method used

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  • Nanocrystalline and synthetic graphite non-adhesive composite material and preparation method thereof

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Embodiment Construction

[0015] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] The invention discloses a method for preparing a non-adhesive composite material of nanocrystals and synthetic graphite, comprising the following steps:

[0017] S1, put the nanocrystalline raw material in a vacuum environment and heat it to a molten state, usually in a vacuum medium frequency induction heating furnace for heating. For the nanocrystalline raw material, it can be melted by heating to 1300°C, and the vacuum degree is ≤10 -2 Pa.

[0018] The nanocrystalline material in the molten state is sprayed onto the surface of the synthetic graphite conveyed by the roller shaft in the way of stripping, and the synthetic graphite passes through the cooling zone to form a composite of amorphous...

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Abstract

The invention relates to a nanocrystalline and synthetic graphite non-adhesive composite material and a preparation method thereof. The method comprises the steps of: a nanocrystalline raw material isheated to a molten state in a vacuum environment; the nanocrystalline material is sprayed in the molten state into the surface of the synthetic graphite conveyed through a roller shaft by the operation of the melt-spinning, and the composite graphite passes through a cooling zone to form a composite of an amorphous magnetic material and synthetic graphite; the composite of the amorphous magneticmaterial and the synthetic graphite is annealed at 500 to 600 DEG C to crystallize the amorphous portion of the composite; the composite is naturally cooled and fed into a press for stitching, and thecomposite material in which nanocrystals and synthetic graphite are combined can be obtained. The nanocrystalline and synthetic graphite non-adhesive composite material has high magnetic permeability, small magnetic loss at high frequency, and has high thermal conductivity.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation materials, in particular to a non-adhesive composite material of nanocrystal and synthetic graphite and a preparation method thereof. Background technique [0002] At present, in order to improve the heat dissipation capacity of electronic products, graphite materials with strong heat dissipation capacity have become the first choice of more and more manufacturers. Synthetic graphite and rice crystal materials are used to prepare composite heat dissipation materials. Generally, double-sided adhesive is pasted on the nanocrystal, and then synthetic graphite is pasted on the double-sided adhesive, and then rolled and pasted to make the nanocrystal and synthetic graphite firmly bonded. combine. This preparation method is convenient for processing, and the formed composite material also has a certain heat dissipation performance. However, due to the existence of the double-sided adhesive, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/123C23C4/18C23C4/04C09K5/14
CPCC09K5/14C23C4/04C23C4/123C23C4/18
Inventor 任泽明任泽永余长勇
Owner GUANGDONG SUQUN NEW MATERIAL CO LTD
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