Graphene-nonmetal-metal composite material for 3D printing, preparation method and application

Abstract

The invention relates to a graphene-nonmetal-metal composite material for 3D printing, a preparation method and application. The preparation method comprises the following steps: (1) mixing, grinding and shearing graphene quantum dots and / or graphene micro-sheets, nonmetal simple substances and / or nonmetal compounds, and metal simple substances and / or metal compounds under the effect of ultrasonic waves (the frequency of the ultrasonic waves is 10-100 KHz) to obtain a composite slurry material or a composite powder material, wherein the mass ratio of the graphene quantum dots and / or the graphene micro-sheets, the nonmetal simple substances and / or the nonmetal compounds, and the metal simple substances and / or the metal compounds is 1: (1-45): (1-45); and (2) drying the prepared composite slurry material or powder material. The invention provides the laser sintering graphene-nonmetal-metal composite material for 3D printing and the preparation method of the laser sintering graphene-nonmetal-metal composite material. The composite material has excellent properties of high hardness, high strength, corrosion resistance and easiness in processing and using; after 3D printing is finished, densification of particles of the composite material is promoted by laser sintering and quenching, crystalline grains are refined, and therefore, the mechanical property of 3D printing products is improved.

Description

technical field [0001] The invention relates to the technical field of graphene applications, in particular to a 3D printed graphene-nonmetal-metal composite material, a preparation method and an application. Background technique [0002] Single-layer graphene sheets are composed of a dense layer of carbon six-membered rings without any structural defects. Its thickness is about 0.35nm, which is the thinnest two-dimensional nano-carbon material so far. At the same time, it is also the basic unit of other carbon materials. It can be warped to obtain zero-dimensional fullerene, curled to obtain one-dimensional carbon nanotubes and stacked to obtain three-dimensional graphite. The most basic repeating period unit in graphene is the most stable benzene ring junction groove in organic chemistry, and it is the best two-dimensional nanomaterial so far. Graphene prepared in reality not only exists single-layer, but also multi-layer. Due to its unique structure, various properties ...

AI Technical Summary

Problems solved by technology

Chinese patent application number: CN201610825355.3 discloses a preparation method of nickel oxide / graphene oxide composite material, which solves the large and uneven particle size of metal oxide particles in the existing preparation of metal oxide / graphene composite materials and the problem of low specific capacitance

[0004] In summary, although graphene and its composite materials and technologies have been applied to many fields, and their performance has been improved and improved, graphene with high hardness and high strength has high surface activity energy, intermolecular forces and chemical bonds. The effect is strong and inevitably easy to reunite

Therefore, due to stacking and agglomeration during the preparation of graphene composite materials, the performance advantages of high hardness, high strength and high thermal conductivity of graphene materials cannot be fully reflected. This problem limits its application in a wider and wider range. field application