Preparation method of graphene aluminum matrix composite

A technology of aluminum-based composite materials and graphene, which is applied in the field of nanomaterials, can solve the problems of low production efficiency and achieve the effect of low production cost and low cost

Inactive Publication Date: 2019-01-04
新疆烯金石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a preparation method of graphene-aluminum-based composite material, which makes graphene uniformly dispersed in the aluminum matrix, mixes graphene oxide aqueous solution and aluminum powder at low temperature, and utilizes spray drying technology to quickly and instantly Drying to prepare graphene-aluminum matrix composites with low oxygen content, improve the electrical conductivity of the material, and further solve the problems of low production efficiency in the continuous chemical industry

Method used

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  • Preparation method of graphene aluminum matrix composite
  • Preparation method of graphene aluminum matrix composite

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The specific operation steps are as follows:

[0032] (1) At 10°C, put the prepared 2L graphene oxide aqueous solution (the solid content of graphene oxide is 4g / L) in a glass kettle with a low-temperature oil bath jacket and stir, take 2kg of pure aluminum powder and add graphite oxide In the olefin aqueous solution, under the rotating speed of 150r / min, continue stirring for 3h;

[0033] (2) The graphene aluminum powder slurry mixed and dispersed in step (1) enters the centrifugal spray drying tower through a peristaltic pump under low temperature stirring, the feeding speed is 45rpm, the inlet air temperature is 150°C, and the outlet air temperature is 100°C , the atomizing nozzle rotating speed is 22000r / min, obtains graphene-aluminum matrix composite powder, and this graphene-aluminum matrix composite material is made up of metal particle and graphene, and described metal particle is evenly coated by graphene (such as figure 1 shown).

[0034] The preparation met...

Embodiment 2

[0036] The specific operation steps are as follows:

[0037] (1) At 3°C, put the prepared 5L graphene oxide aqueous solution (the solid content of graphene oxide is 2g / L) in a glass kettle with a low-temperature oil bath jacket and stir, take 3kg of pure aluminum powder and add graphite oxide In the olefin aqueous solution, under the rotating speed of 200r / min, continue stirring for 5h;

[0038] (2) The graphene aluminum powder slurry mixed and dispersed in step (1) enters the centrifugal spray drying tower through a peristaltic pump under low temperature stirring, the feeding speed is 50rpm, the inlet air temperature is 180°C, and the outlet air temperature is 110°C , the rotation speed of the atomizing nozzle is 24000r / min, and the graphene-aluminum matrix composite powder is obtained. The graphene-aluminum matrix composite material is composed of metal particles and graphene, and the metal particles are uniformly coated by graphene.

[0039] The preparation method of a gra...

Embodiment 3

[0041] The specific operation steps are as follows:

[0042](1) At 2°C, put the prepared 2L graphene oxide aqueous solution (the solid content of graphene oxide is 5g / L) in a glass kettle with a low-temperature oil bath jacket and stir, take 2kg of pure aluminum powder and add graphite oxide In the olefin aqueous solution, under the rotating speed of 150r / min, continue stirring for 8h;

[0043] (2) The graphene aluminum powder slurry mixed and dispersed in step (1) enters the centrifugal spray drying tower through a peristaltic pump under low temperature stirring, the feeding speed is 60rpm, the inlet air temperature is 120°C, and the outlet air temperature is 110°C , the rotation speed of the atomizing nozzle is 20000r / min, and the graphene-aluminum-based composite powder is obtained. The graphene-aluminum-based composite material is composed of metal particles and graphene, and the metal particles are uniformly coated by graphene.

[0044] The raw material of embodiment 1-3...

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Abstract

The invention provides a preparation method of a graphene aluminum matrix composite and belongs to the field of nanometer materials. The preparation method of the graphene aluminum matrix composite comprises the following steps of stirring and mixing an oxidized graphene water solution and metal particles under 0-30 DEG C, and conducting rapid spray drying through a centrifugal spray drying towerto obtain the graphene aluminum matrix composite, wherein aluminum powder or aluminum alloy powder serves as the metal particles. According to the preparation method of the graphene aluminum matrix composite, an environment-friendly and continuous mass production scheme is provided; the oxidation degree of the metal powder can be controlled by controlling the mixing temperature, the drying speed and the drying temperature, so that the prepared composite has the low oxygen content, the preparation cost is minimized, and the electrical conductivity of a metal matrix can be further enhanced. Meanwhile, the preparation process can be used for industrial mass production.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a preparation method of a graphene-aluminum matrix composite material. Background technique [0002] Graphene is a carbon atom with sp 2 The honeycomb planar film formed by hybridization method has a thickness of less than one nanometer. Graphene is the thinnest and hardest nanomaterial known so far in the world. Its Young's modulus is as high as 1.01TPa and its tensile strength is as high as 130GPa. More than 100 times that of steel, the thermal conductivity is as high as 5300W / m·K, much higher than copper, and also higher than carbon nanotubes and diamonds. Because graphene has the lowest density, highest mechanical properties, highest thermal conductivity and lowest thermal expansion properties, graphene has been considered as a very promising reinforcement since its birth. [0003] Aluminum matrix composites have the advantages of high specific strength, high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02
CPCB22F1/14B22F1/16
Inventor 杨新伟卢科伟王成军李辰鹏
Owner 新疆烯金石墨烯科技有限公司
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