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Graphene nanosheet/aluminum composite and preparation method thereof

A graphene nanosheet and aluminum composite material technology, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of poor reinforcement effect and low plasticity of graphene/aluminum composite materials, and avoid the pollution of aluminum powder. The effect of uniform dispersion and little structural damage

Inactive Publication Date: 2019-12-17
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a graphene nanosheet / aluminum composite material and a preparation method thereof for the problems of poor reinforcement effect and low plasticity of the graphene / aluminum composite material due to the deficiencies in the existing preparation technology. Composite materials have the characteristics of high strength and good plasticity

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  • Graphene nanosheet/aluminum composite and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] The graphene nanosheet mass fraction described in this embodiment is the graphene nanosheet / aluminum composite material of 0.5% and preparation method thereof, and concrete steps are as follows:

[0033] 1) Get 5g graphene nanosheets, add in 1000ml dehydrated ethanol, first mechanically stir for 1h, the stirrer rotating speed is 700rpm, then ultrasonically disperse for 1h, the obtained concentration is the ethanol dispersion liquid of the graphene nanosheets of 0.5g / 100ml;

[0034] 2) Take 1200g of spherical aluminum powder and steel grinding balls and put them into a ball milling pot, vacuumize the ball milling pot, fill it with argon gas, and then ball mill. The speed of the ball mill is 400rpm, and the ball milling time is 3h to obtain flake aluminum powder;

[0035] 3) Open the ball mill tank in the glove box filled with argon, get 995g flake aluminum powder and move it into the ethanol dispersion of graphene nanosheets, and disperse the flake aluminum powder by mech...

Embodiment 2

[0040] The graphene nanosheet mass fraction described in the present embodiment is the graphene nanosheet / aluminum composite material of 1.0% and preparation method thereof, and concrete steps are as follows:

[0041] 1) Get 10g graphene nanosheets, add in 1000ml dehydrated ethanol, first mechanically stir for 1h, the stirrer rotating speed is 700rpm, then ultrasonic dispersion 2h, the obtained concentration is the ethanol dispersion liquid of the graphene nanosheets of 1.0g / 100ml;

[0042] 2) Take spherical aluminum powder and steel grinding balls of 1200g and 2400g respectively and put them into a ball milling jar, vacuumize the ball milling jar, fill it with argon gas, and then ball mill. The speed of the ball mill is 300rpm, and the ball milling time is 2h to obtain flake aluminum powder ;

[0043] 3) Open the ball mill tank in the glove box filled with argon, move 990g flake aluminum powder into the ethanol dispersion of graphene nanosheets, and disperse the flake aluminu...

Embodiment 3

[0048] The graphene nanosheet mass fraction described in the present embodiment is the graphene nanosheet / aluminum composite material of 1.5% and preparation method thereof, and concrete steps are as follows:

[0049] 1) Get 15g graphene nanosheets, add in 1500ml dehydrated ethanol, first mechanically stir for 1h, the stirrer rotating speed is 700rpm, then ultrasonic dispersion 2h, the obtained concentration is the ethanol dispersion liquid of the graphene nanosheets of 1.0g / 100ml;

[0050] 2) Take spherical aluminum powder and steel balls of 1200g and 3600g respectively and put them into a ball milling jar, vacuumize the ball milling jar, fill it with argon gas, and then ball mill. The speed of the ball mill is 200rpm, and the ball milling time is 1h to obtain flake aluminum powder ;

[0051] 3) Open the ball mill tank in the glove box filled with argon, get 985g flake aluminum powder and move it into the ethanol dispersion of graphene nanosheets, and disperse the flake alumi...

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Abstract

The invention relates to a graphene nanosheet / aluminum composite and a preparation method thereof. The preparation method comprises the following main steps that (1) a graphene nanosheet is dispersedinto an absolute ethyl alcohol solution, and an absolute ethyl alcohol dispersion solution of the graphene nanosheet is prepared; (2) under argon shielding, spherical aluminum powder is converted intosheet aluminum powder through ball grinding; (3) in an argon inflated glove box, the sheet aluminum powder is moved into the absolute ethyl alcohol dispersion solution of the graphene nanosheet, andcomposite slurry of graphene nanosheet / sheet aluminum powder is prepared through mechanical stirring; (4) graphene nanosheet / sheet aluminum powder composite powder is prepared through suction filtration and drying; (5) a graphene nanosheet / aluminum composite blank is prepared through cold pressing and vacuum sintering; and (6) the graphene nanosheet / aluminum composite is prepared through hot extrusion. The preparation process has the advantages that structure damage of the graphene nanosheet is small, dispersion is uniform, and graphene nanosheet-Al interface bonding is good; and the preparedgraphene nanosheet / aluminum composite is high in strength and good in plasticity.

Description

technical field [0001] The invention relates to the technical field of graphene composite materials, in particular to a graphene nanosheet / aluminum composite material and a preparation method thereof. Background technique [0002] Graphene is a carbon atom with sp 2 The hexagonal structure composed of hybrid orbitals is a two-dimensional material with a thickness of only one carbon atom, and has a large specific surface area (2630m 2 / g), extremely high Young's modulus (1TPa) and breaking strength (125GPa), ultra-high thermal conductivity (5000W.m -1 K -1 ) and electron mobility (200000cm 2 v -1 the s -1 ), since its inception, it has attracted extensive attention in the fields of electronic technology, new energy materials and composite materials. Adding a small amount of graphene to the metal matrix is ​​expected to prepare new metal matrix composites with good processability and excellent comprehensive properties. Therefore, graphene-enhanced metal matrix composites...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/05C22C1/10B22F9/04B22F3/02B22F3/10B22F3/20B22F1/00
CPCC22C21/00C22C1/051B22F9/04B22F3/02B22F3/1007B22F3/20B22F2009/043B22F2003/208B22F1/068B22F1/052
Inventor 张占伟万学谦赵奕光马琳徐荣正国旭明
Owner SHENYANG AEROSPACE UNIVERSITY
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