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A kind of preparation method of three-dimensional graphene composite material

A composite material, graphene technology, applied in the direction of additive processing, etc., to achieve the effects of excellent mechanical properties, improved accuracy, and rich raw materials

Active Publication Date: 2022-05-03
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned shortcomings such as complex processing and simple molding structure, and realize rapid prototyping of three-dimensional graphene composite materials, the present invention provides a preparation method of three-dimensional graphene composite materials. The three-dimensional graphene material and polymer are filled and compounded through the soaking process to construct a three-dimensional graphene composite material

Method used

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  • A kind of preparation method of three-dimensional graphene composite material
  • A kind of preparation method of three-dimensional graphene composite material
  • A kind of preparation method of three-dimensional graphene composite material

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preparation example Construction

[0053] A preparation method of a three-dimensional graphene resin-based composite material, comprising the following steps:

[0054] S1 substrate processing, fixing the polyimide (PI) paper on the bottom plate, and laser-induced the PI paper to produce a laser-induced graphene (LIG) substrate;

[0055] S2 powder spreading, spreading the polymer powder on the surface of the substrate LIG, the thickness of the powder layer is 60%-80% of the graphene growth height;

[0056] S3 laser induction, using CO 2 The laser performs laser selective carbonization on the laid polymer powder to form a pre-designed single-layer graphene film;

[0057] S4 continues to spread the powder, spread a layer of polymer powder on the surface of the formed graphene, and the thickness of the powder layer is 60%-80% of the growth height of the graphene;

[0058] S5 laser induction, using CO 2 The laser performs laser selective carbonization on the laid polymer powder to form a pre-designed single-layer...

Embodiment 1

[0068] A method for preparing a three-dimensional graphene resin-based material by 3D printing, comprising the following steps:

[0069] S1 substrate processing, fixing the polyimide (PI) paper on the aluminum plate, and laser-induced the PI paper to produce a laser-induced graphene (LIG) substrate;

[0070] S2 in the air atmosphere, spread the polyimide powder evenly on the LIG surface of S1, and use the laser to select the polyimide powder with a power of 1W, a scanning speed of 50.8mm / s and a printing resolution of 500 Sexual graphene;

[0071] S3 continues to spread the powder, on the surface of the formed graphene, carry out the second powder spreading, and the thickness of the powder spreading is 50 μm;

[0072] S4 laser induction, the laser is used to selectively graphenize the polyimide powder with a power of 1W, a scanning speed of 50.8mm / s and a printing resolution of 500 to form a pre-designed single-layer graphene film;

[0073] S5 prints layer by layer, repeatin...

Embodiment 2

[0079] A method for preparing a three-dimensional graphene resin-based composite material by 3D printing, comprising the following steps:

[0080] S1 substrate processing, fixing the polyimide (PI) paper on the aluminum plate, and laser-induced the PI paper to produce a laser-induced graphene (LIG) substrate;

[0081] In S2, the polyimide powder was evenly spread on the LIG surface of S1 in the air atmosphere, and the polyimide powder was processed by the laser with a power of 1.5W, a scanning speed of 50.8mm / s and a printing resolution of 500. Selective grapheneization;

[0082] S3 continues to spread the powder, on the surface of the formed graphene, carry out the second powder spreading, and the thickness of the powder spreading is 100 μm;

[0083] S4 laser induction, the laser is used to selectively graphenize the polyimide powder with a power of 1.5W, a scanning speed of 50.8mm / s and a printing resolution of 500 to form a pre-designed single-layer graphene film;

[0084...

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Abstract

The invention provides a method for preparing a three-dimensional graphene composite material. The three-dimensional graphene structure is pre-prepared by 3D printing, and then compounded with a filling material to prepare the three-dimensional graphene composite material. The method has simple steps, low cost, and high efficiency; the process of preparing the three-dimensional graphene structure does not require the use of chemical reagents, additional processing technology assistance, or processing under a special atmosphere, and rapid prototyping is realized; at the same time, the prepared The structure of the three-dimensional graphene composite material is controllable, which can realize the printing of multi-scale complex three-dimensional graphene structure, and the obtained composite material has excellent comprehensive properties.

Description

technical field [0001] The invention belongs to the field of graphene composite material preparation, and in particular relates to a preparation method of a three-dimensional graphene composite material. Background technique [0002] Graphene, as a two-dimensional carbon nanomaterial, is a two-dimensional planar structure formed by a network of sp2 hybridized carbon atoms. Graphene has excellent properties such as large specific surface area, corrosion resistance, good electrical properties, and extremely high mechanical properties, making it have very large potential applications in the field of materials, flexible electronics, and energy storage. [0003] Three-dimensional graphene composites give full play to the excellent properties of three-dimensional graphene sheets, endowing polymer composites with excellent electrical, thermal and mechanical properties. At the same time, the three-dimensional graphene network is used as the skeleton to construct the porous three-di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L79/08C08L81/02C08L61/16C08K3/04B33Y70/10
CPCC08K3/042B33Y70/10C08L63/00C08L79/08C08L81/02C08L61/16
Inventor 罗斯达刘福王冠韬
Owner BEIHANG UNIV
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