A kind of graphene metal composite material prepared by metal salting-out method and preparation method thereof
A metal composite material, metal material technology, applied in the field of composite material preparation, can solve the problems of graphene agglomeration, affecting product performance, etc., achieve the effect of improving sample performance, increasing hardness and melting point, and solving easy agglomeration
Active Publication Date: 2016-03-02
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology
Existing graphene-metal composite materials are made by mechanically blending graphene and metal materials (such as ball milling), and graphene agglomeration will occur during the preparation process, which will affect the performance of the product
Method used
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Embodiment 1
[0026] This example prepares graphene copper-metal composite material according to the following steps:
[0027] a. Add 0.3 g of graphene oxide into 20 mL of distilled water, and ultrasonically disperse for 2 hours to obtain a graphene oxide suspension;
[0028] b. Dissolve 20g of copper acetate (CA) in 30mL of glycerin and stir evenly to obtain a metal salt / glycerin system;
[0029] c. After mixing the graphene suspension with the metal salt / glycerol system, stir at 50°C for 6h, and then stir at 150°C for 3h to obtain a solid-liquid mixture;
[0030] d. Suction filter the solid-liquid mixture obtained in step c, obtain dark purple powder on filter paper, wash 3 times with distilled water, then wash 2 times with absolute ethanol to obtain dark purple powder, and finally dry at 110°C for 1 hour, namely Obtain graphene-copper-metal composite material, denoted as sample 1.
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Abstract
The invention discloses a graphene metal composite material prepared through a metal salt precipitation method and a preparation method of the graphene metal composite material prepared through the metal salt precipitation method. The graphene metal composite material is characterized in that metal salt and graphene oxide are used as raw material, through the metal salt precipitation method, the graphene oxide is reduced to be graphene, the meta salt is precipitated to be metal material, and therefore the graphene metal composite material with the metal material as a parent is formed, wherein the flake graphene is inserted into the metal material in an embedded mode. The graphene metal composite material is prepared through the metal salt precipitation method, reaction in-situ is performed on oxygen-containing functional groups on the graphene oxide and metallics obtained through precipitating the metal salt, and a bonding effect is achieved between the metallics and the graphene oxide, so that the flake graphene is not prone to be agglomerated, and the problems that graphene is prone to being agglomerated and poor in dispersity in the parent metal material are solved. Through indentation testing and melting point testing, the hardness of the sample is improved, the melting point of the sample is increased, and performance of the sample is improved.
Description
technical field [0001] The invention relates to a preparation method of a graphene-metal composite material, more specifically relates to a graphene-metal composite material prepared by a metal salting-out method, and belongs to the field of composite material preparation. Background technique [0002] Graphene, English name Graphene, is a two-dimensional lattice structure in which carbon atoms are arranged in a hexagonal manner. As a single-layer carbon-atom planar material, graphene can be obtained by exfoliating graphite materials. Graphene has become the focus of scientific and industrial attention since the graphite crystal film was discovered by scientists at the University of Manchester in 2004. The thickness of graphene is only 0.335 nanometers, which is not only the thinnest known material, but also very firm and hard. The measured tensile strength and elastic modulus are 125GPa and 1.1TPa respectively; as a simple substance, it can transfer electrons at room tempe...
Claims
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IPC IPC(8): B22F1/02B22F9/24
Inventor 朱彦武袁林
Owner UNIV OF SCI & TECH OF CHINA
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