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Graphene aluminum composite material and preparation method thereof

An aluminum composite material, graphene technology, applied in metal material coating process, ion implantation plating, coating and other directions, can solve the problems of graphene and aluminum matrix cannot be uniformly mixed, long preparation period, etc., to achieve short preparation period , Simple operation, and the effect of improving wettability

Active Publication Date: 2020-04-21
新疆烯金石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a graphene-aluminum composite material, a preparation method thereof, and a cable or wire containing the same in view of the problems that the preparation cycle is long and the graphene and the aluminum matrix cannot be mixed uniformly.

Method used

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  • Graphene aluminum composite material and preparation method thereof
  • Graphene aluminum composite material and preparation method thereof

Examples

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preparation example Construction

[0028] The embodiment of the present invention provides a kind of preparation method of graphene aluminum composite material, comprises the following steps:

[0029] S10, providing graphene airgel, forming an aluminum film on the surface of graphene airgel by vacuum evaporation;

[0030] S20, stirring the graphene airgel with the aluminum film on the surface to obtain the graphene powder with the aluminum film on the surface;

[0031] S30, using a stirring casting method to compound the graphene powder with the aluminum film on the surface and the aluminum matrix.

[0032] The preparation method of the graphene-aluminum composite material provided by the embodiment of the present invention adopts the vacuum evaporation method to form an aluminum film on the surface of the graphene airgel with a three-dimensional network structure, and then makes the overlapped graphene aerogels in the graphene aerogel by stirring Graphene flakes are dispersed to form graphene powder and stirr...

Embodiment 1

[0058] (1) Freeze-dry 100 mL of a graphene oxide aqueous solution with a concentration of 5 mg / ml, the freeze-drying temperature is -50 ° C, and the freeze-drying time is 20 h, and the prepared graphene oxide airgel is cut into 50 × 50 × 50 mm The small pieces were reduced in a vacuum environment at 2000°C for 2 hours to prepare graphene airgel.

[0059] (2) Put the graphene airgel prepared in step (1) into the vacuum coating equipment, vacuumize the vacuum chamber, and vacuum to 0.1Pa, carry out ion bombardment to the sample, the voltage is 200V, and the bombardment time is 30min. Turn on the diffusion pump to make the vacuum chamber into a high vacuum state with an air pressure of 5×10 -3 Pa, the graphene airgel is baked to further remove the gas in the graphene airgel. Preheat the evaporation source, adjust the voltage to make the temperature reach 700°C, melt the aluminum strip in the evaporation source to a molten state, adjust the power to 500W, adjust the temperature ...

Embodiment 2

[0063] It is basically the same as Example 1, except that the concentration of the graphene oxide aqueous solution in step (1) is 3 mg / ml. The scanning electron micrographs of the graphene-aluminum composite material prepared in this example show that graphene can be evenly distributed in the aluminum metal phase.

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Abstract

The invention relates to a preparation method of a graphene aluminum composite material. The method comprises the following steps: providing graphene aerogel, and forming an aluminum film on the surface of the graphene aerogel by a vacuum evaporation method; stirring the graphene aerogel with an aluminum film formed on the surface to obtain graphene powder with the aluminum film formed on the surface; and compounding the graphene powder with the aluminum film formed on the surface with an aluminum matrix by adopting a stirring casting method. The invention further relates to the graphene aluminum composite material and a cable or an electric wire comprising the graphene aluminum composite material.

Description

technical field [0001] The invention relates to the technical field of metal matrix composite materials, in particular to a graphene-aluminum composite material and a preparation method thereof. Background technique [0002] Graphene is a new type of two-micro-nano crystal material with excellent electrical and mechanical properties. The properties of graphene itself are considered to be an ideal reinforcement phase for metal matrix composites, while traditional reinforcement methods for aluminum and aluminum alloys have been difficult to significantly improve. Graphene reinforced aluminum matrix composites have become an effective way to break this deadlock. The existing technology for preparing graphene-aluminum matrix composites is powder metallurgy, which can realize the uniform distribution of graphene in the aluminum matrix, but the preparation cycle is long. The extremely poor wettability between graphene as a non-metal and aluminum as a metal makes the uniform mixin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/24C23C14/02C23C14/18B22D23/00C22C21/00
CPCC23C14/24C23C14/18C23C14/022B22D23/00C22C21/00
Inventor 陈长科杨新伟李辰鹏王成军钟小勇
Owner 新疆烯金石墨烯科技有限公司
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