A method for 3D printing high temperature resistant graphene-based conductive structures

A 3D printing, graphene-based technology, applied in the direction of equipment for manufacturing conductive/semiconductive layers, chemical instruments and methods, circuits, etc., can solve the problem of low solid content, shrinkage deformation, and difficulty in maintaining the design shape and precision of the structure and other problems, to achieve good rheological properties, high printing accuracy, and good shear thinning effect

Active Publication Date: 2022-07-12
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem that the existing graphene-based electrode slurry has low solid phase content, shrinks and deforms after molding, making it difficult to maintain the designed shape and precision of the structure, and provides a method for 3D printing a high-temperature-resistant graphene-based conductive structure

Method used

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  • A method for 3D printing high temperature resistant graphene-based conductive structures
  • A method for 3D printing high temperature resistant graphene-based conductive structures
  • A method for 3D printing high temperature resistant graphene-based conductive structures

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specific Embodiment approach 1

[0034] Embodiment 1: A method of 3D printing a high-temperature resistant graphene-based conductive structure in this embodiment is carried out according to the following steps:

[0035] 1. Preparation of graphene oxide:

[0036] 1. Mix the concentrated sulfuric acid, potassium persulfate and phosphorus pentoxide with a mass percentage of 30% to 70% and stir evenly, then add graphite, and keep the temperature at 50 ℃ to 90 ℃ for 2h to 4.5h. Then add deionized water and let stand for 5h~24h to obtain a standing liquid;

[0037] The quality of described potassium persulfate and mass percent are that the volume ratio of the vitriol oil of 30%~70% is 1g:(3~5)mL; The mass ratio of described potassium persulfate and phosphorus pentoxide is 1: (0.8~1.2); The mass ratio of described potassium persulfate and graphite is 1:(1~1.2); The mass ratio of described potassium persulfate and deionized water is 1g:(10~100)mL ;

[0038] 2. Pour off the supernatant of the standing solution, fil...

specific Embodiment approach 2

[0055] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the graphite described in step 1 ① is high-purity flake graphite, and the particle size is 50 meshes to 1000 meshes. Others are the same as the first embodiment.

specific Embodiment approach 3

[0056] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the molecular weight cut-off of the dialysis bag described in step 1 (4) is 14,000. Others are the same as in the first or second embodiment.

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Abstract

A method for 3D printing a high temperature resistant graphene-based conductive structure, and the invention relates to a method for 3D printing a conductive structure. The invention solves the problems that the existing graphene-based electrode slurry has low solid phase content and shrinks and deforms after molding, which makes the structure difficult to maintain the design shape and accuracy. Preparation methods: 1. Preparation of graphene oxide; 2. Preparation of graphene oxide / graphite 3D printing slurry; 3. Graphene oxide / graphite 3D printing molding; 4. 3D printing graphene oxide / graphite high temperature reduction. The invention is used for 3D printing a high temperature resistant graphene-based conductive structure.

Description

technical field [0001] The present invention relates to a method for 3D printing a conductive structure. Background technique [0002] Graphene is a two-dimensional nanomaterial with excellent electrical conductivity and ultra-high strength. The graphene precursor is usually reduced by graphene oxide to prepare graphene macroscopic bodies, but its molding is difficult, which is due to graphene oxide. Solution viscosity increases sharply as solid content increases, resulting in printable graphene oxide solutions with too low solid content, up to about 10 wt%, which can lead to up to 80% volume during post-molding drying Shrink, it is difficult to maintain the shape and precision of the original design. SUMMARY OF THE INVENTION [0003] The present invention aims to solve the problems that the existing graphene-based electrode slurry has low solid-phase content and shrinkage and deformation after molding, which makes the structure difficult to maintain the designed shape an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/52C04B35/626C01B32/198B33Y70/00B33Y10/00H01B13/00
CPCC04B35/522C04B35/62605C01B32/198B33Y70/00B33Y10/00H01B13/0026C04B2235/6562C04B2235/6567C04B2235/96Y02E60/10
Inventor 杨治华周国相戚聿昭钟晶贾德昌周玉
Owner HARBIN INST OF TECH
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