A method for preparing three-dimensional graphene based on 3D printing foam metal
A foam metal and 3D printing technology, applied in the field of three-dimensional graphene preparation, can solve the problems of low accuracy, complex process, material waste, etc., and achieve the effects of fine foam metal, simplified process and high material utilization rate.
Active Publication Date: 2016-03-30
FUZHOU UNIV
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Problems solved by technology
[0007] In view of the above problems, the present invention provides a method for preparing three-dimensional graphene based on 3D printing metal foam. The metal foam can be directly printed into shape by means of an electron beam melting rapid prototyping machine, which combines the advantages of 3D printing and solves the problem of Waste of materials, complicated process, and low accuracy
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[0054]Follow the steps below:
[0055] (S11) Using computer to design the 3D digital model of metal foam, the 3D drawing software that can be used includes Pro / E, SolidWorks, CATIA, UG, Solidege, AUTOCAD;
[0056] (S12) Using RP-Tools software to perform two-dimensional digital processing on the three-dimensional digital model of the metal foam, that is, to divide and slice the model along the height direction of the model, and obtain the two-dimensional contour diagram of the section of each layer;
[0057] (S13) Input the data model of the foamed metal into the 3D printer program, obtain the material and shape of each layer on the two-dimensional plane according to the built data model, design the high-energy laser printing path and the melting and sintering time, and realize the following implementation The steps are under the control of the computer, the moldless free forming of metal foam;
[0058] (S14) Place the stainless steel substrate in the 3D printing molding cavi...
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Abstract
The invention aims to provide a method for preparing stereo graphene based on 3D printing of foam metal. The method comprises the following steps: S1, a three-dimensional digital model of foam metal is designed by a computer; S2, in a vacuum or argon environment, a layer of metal powder is uniformly laid on a stainless steel substrate by a powder laying mechanism; S3, the powder layer is preheated to reach the sintering degree; S4, an electron beam scans the powder layer to fuse loosely-connected particles so as to generate a layered cross-section of a forming part; S5, a workbench descends the height of a layer, and a new layer of powder is laid; S6, the steps (2), (3), (4) and (5) are repeated successively so as to form lumpy foam metal; S7, the same kind of metal particles are used for shot blasting so as to remove residual powder adhered to the forming part; S8, graphene grows on the prepared foam metal; and S9, a corrosive liquid is used to corrode the foam metal base so as to obtain the three-dimensional structured graphene. According to the invention, the problems of material waste, complex process and low precision are solved.
Description
technical field [0001] The invention relates to a method for preparing three-dimensional graphene based on 3D printing foam metal, and belongs to the field of preparation of three-dimensional graphene. Background technique [0002] Metal foam refers to a porous metal with a porosity of more than 90% and a certain strength and rigidity. Porous metal foam material is actually a composite material of metal and gas, which has the advantages of small specific gravity, large specific surface, good energy absorption, flame resistance, heat and fire resistance, thermal shock resistance, gas sensitivity, regeneration, and good processability. Porous metal foam materials can be divided into open-cell metal foam and closed-cell metal foam. Through-cell metal foam has the advantages of high heat exchange and heat dissipation, good sound absorption, excellent permeability, and good electromagnetic wave absorption; while closed-cell metal foam has the advantages of low thermal conductivi...
Claims
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IPC IPC(8): C01B31/04
Inventor 李福山郭太良林健吴朝兴陈煌彬
Owner FUZHOU UNIV