Graphite heat conducting foam and preparation process thereof

A technology of graphite heat conduction and foam, which is applied in the direction of lamination, layered products, metal layered products, etc., can solve the problem of easy shaking of graphite powder, achieve the effect of preventing leakage and improving work efficiency

Active Publication Date: 2016-06-15
SHENZHEN JINHUI TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the phenomenon that the graphite powder in the thermally conductive foam is easy to shake off in the prior art, which leads to the technical bottleneck of the metal parts that are in contact with the thermally conductive foam up and down. A kind of graphite heat-conducting foam that prevents graphite powder from falling and has good thermal conductivity and its preparation process

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  • Graphite heat conducting foam and preparation process thereof

Examples

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Embodiment 1

[0023] Embodiment 1 This embodiment discloses a graphite thermally conductive foam. The thermally conductive foam is composed of a copper foil layer 1, a graphite layer 2, a hot melt adhesive layer 3, and a metal sponge layer 4 that are sequentially wrapped from the outside to the inside;

[0024] The hot melt adhesive layer 3 is a double-sided tape; the copper foil layer 1 has a thickness of 0.01-0.1mm; the graphite layer 2 has a thickness of 0.01-0.5mm; the metal sponge layer 4 is a polyester sponge; The polyester sponge also contains copper or nickel.

Embodiment 2

[0025] Example 2 This example discloses a preparation process of a graphite thermally conductive foam (the product described in Example 1), and the process is as follows:

[0026] 1. First pass the graphite layer through a die-cutting machine to punch out the desired gap with a die-cutting machine according to different specifications; make its area smaller than the copper foil layer and the hot melt adhesive layer,

[0027] 2. Use a laminating machine to laminate the punched graphite layer with the copper foil layer to obtain a thermal conductive material;

[0028] 3. Then press the thermally conductive material composed of the graphite layer and the copper foil layer with the hot melt adhesive by heating and pressing; the pressing temperature is 140-180°C, and the pressing time is 1-2.5 seconds.

[0029] 4. Finally, wrap the finished graphite copper with a metal sponge, and use a forming machine to make the shape, and then slice it into use specifications by a slicer. After bonding, ...

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Abstract

The invention belongs to the field of heat conducting foam processing, in particular relates to graphite heat conducting foam and a preparation process thereof. The heat conducting foam is sequentially wrapped with an outer coated material layer, a graphite layer, a hot melt adhesive layer and a conducting sponge layer from outside to inside. According to the process, a die-cutting machine is only needed to punch before the graphite layer and a copper foil layer are laminated, so that the area of the graphite layer is smaller than the areas of the copper foil layer and the hot melt adhesive layer; after laminating, graphite is completely closed in the middle, and graphite powder is prevented from falling; metal is applied, has good heat conductivity and is added to filled sponge, so that the heat conductivity of products is enhanced; the graphite heat conducting foam has better market prospect and higher economic value.

Description

Technical field [0001] The invention belongs to the field of thermally conductive foam processing, and specifically relates to a graphite thermally conductive foam and a preparation process thereof. Background technique [0002] At present, the thermally conductive foams on the market all have the phenomenon that the graphite powder, which plays the main role of heat conduction, is easy to shake off, which may cause the metal parts that are in contact with the thermally conductive foam to be electrically conductive. Therefore, finding a new thermally conductive foam that prevents graphite powder from shaking off is an urgent matter in this field. Summary of the invention [0003] For this reason, the technical problem to be solved by the present invention is to overcome the phenomenon that the graphite powder in the thermally conductive foam in the prior art is easy to shake off, which causes the technical bottleneck of the metal parts contacting the thermally conductive foam up a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/18B32B9/00B32B9/04B32B15/20B32B7/10B32B3/04B32B33/00B32B37/10B32B37/12B32B38/00B32B43/00
CPCB32B3/04B32B7/10B32B9/007B32B9/041B32B9/045B32B9/046B32B15/20B32B27/18B32B27/36B32B33/00B32B37/10B32B37/1284B32B38/0004B32B43/003B32B2266/0264B32B2307/302
Inventor 伍栩生
Owner SHENZHEN JINHUI TECH
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