Aluminum-based copper-plated graphene film composite material with high heat-conducting property and preparation method thereof

Abstract

The invention discloses an aluminum-based copper-plated graphene film composite material with high heat-conducting property and a preparation method thereof. The preparation method comprises the following steps of: de-oiling an aluminum substrate sample for 3min in a 65 DEG C de-oiling solution and then cleaning by clear water; carrying out bright dipping on the de-oiled sample for 2min in a 25 DEG C bright dipping solution and then cleaning by clear water; carrying out zinc dipping on the sample (subjected to the bright dipping) for 2min in a 25 DEG C primary zinc dipping solution and then cleaning by clear water; carrying out zinc dipping on the sample (subjected to the primary zinc dipping) for 2min in a 25 DEG C secondary zinc dipping solution and then cleaning by clear water; plating the sample (subjected to the secondary zinc dipping) for 5min by direct current in a 25 DEG C priming copper plating solution, wherein the current density is 1-4A / dm2, the polar distance is 5cm, and then cleaning by clear water; plating the sample (subjected to the copper plating) for 20-40min by directional pulse in a 25 DEG C composite copper plating graphene plating solution and then cleaning by clear water, wherein the current density is 1-4A / dm2 and the polar distance is 5cm. The preparation method has the following advantages that the requirement on equipment is low, the operation is convenient, the process route is clear and the thickness of the film is controllable.

Description

technical field [0001] The invention relates to the technical field of metal aluminum surface treatment and high thermal conductivity composite film, in particular to an aluminum-based copper-coated graphene film composite material with high thermal conductivity and a preparation method thereof. Background technique [0002] Because aluminum and its alloys have small specific gravity, strong plasticity, excellent processing performance, and low price, they are good conductors of heat and are widely used in air-conditioning radiators, computer radiators, cooling towers, LED module cooling components and other fields. However, with the development of science and technology, the functions of various electronic products are becoming more and more powerful. Powerful electronic products are accompanied by high-power electronic components, such as high-power notebook computer CPU processors, high-power notebook computer graphics cards, and high-power LEDs. And other electronic prod...

AI Technical Summary

Problems solved by technology

In the existing methods of modifying aluminum and its alloy materials, there is a method of adding materials with excellent thermal conductivity to the aluminum material in the molten state to improve the thermal conductivity of the aluminum material, but aluminum and most of the materials do not wet each other in the molten state , these materials cannot be well dispersed in aluminum, so it is difficult to apply them to thermal conductive materials

[0003] At present, graphene is the material with the strongest thermal conductivity found in the world, and its thermal conductivity can be as high as 6000W / mK. Other metals with high thermal conductivity include silver, copper, and gold. These metals are due to their large specificity and high price. The application of the material is limited

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