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3D printing graphene-nonmetal composite material, preparation method and application

A composite material and 3D printing technology, which is applied in the manufacture of hybrid/electric double layer capacitors, electrical components, battery electrodes, etc. Strong chemical bonds, high surface activity, etc., to achieve the effect of refining grains, easy processing and use, and promoting densification

Inactive Publication Date: 2017-05-31
尹宗杰 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The 3D printing graphene-nonmetallic composite material of the present embodiment, its preparation method comprises the steps:

[0023] (1) Under the action of an ultrasonic probe (ultrasonic frequency is 10KHz), graphene quantum dots and nano-boron nitride powder are mixed at a mass ratio of 1:8, and the mixture uses polyethylene glycol as a solvent for high-pressure physical grinding and shearing, The pressure is 12MPa, the time is 12h, and the temperature is 2°C to prepare a composite slurry material;

[0024] (2) Vacuum-dry the prepared composite slurry material, the pressure is 150Pa, the drying time is 200min, and the drying temperature is 80°C to obtain a 3D printed graphene-nonmetal composite material.

[0025] In other embodiments, graphene quantum dots can also be replaced by graphene microplates or a mixture of graphene quantum dots and graphene microplates; the pressure of vacuum drying can be in the range of 150-1000Pa, and the drying time is 60-200min . ...

Embodiment 2

[0027]The application method of the 3D printing graphene-non-metal composite material of embodiment 1 is: after 3D printing the graphene-non-metal composite material by 3D printing, utilize fiber laser system to carry out sintering, quenching, laser frequency is 80kHz, laser power It is 190W, the spot diameter is 0.2mm, the scanning speed is 0.5mm / s, and the scanning distance is 0.8mm, and the laser sintering 3D printing product is obtained.

Embodiment 3

[0029] The 3D printing graphene-nonmetallic composite material of the present embodiment, its preparation method comprises the steps:

[0030] (1) Under the action of an ultrasonic reactor (ultrasonic frequency is 100KHz), graphene microsheets and carbon fibers are mixed with a mass ratio of 1:15, using ball mill pure water as a solvent for high-pressure physical grinding and shearing, the pressure is 150MPa, time For 12h, the temperature is 18°C, and the composite slurry material is obtained;

[0031] (2) Dry the prepared composite slurry material under normal pressure, the drying time is 100min, and the drying temperature is 50°C to obtain a 3D printed graphene-nonmetal composite material.

[0032] In other embodiments, the drying time of normal pressure drying may be 100-500 min, and the drying temperature may be within the range of 50-120°C.

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Abstract

The invention relates to a 3D printing graphene-nonmetal composite material, a preparation method and application. The preparation method comprises the following steps: (1) mixing, grinding and shearing graphene quantum dots and / or graphene microchips and a nonmetal elementary substance and / or nonmetal compound to prepare a composite pulp material or composite powder material, wherein the ultrasonic frequency is 10 to 100 KHz, and the weight percent of the graphene quantum dots and / or graphene microchips is 0.01 to 30 percent; and (2) drying the prepared composite pulp material or powder material. The laser sintered graphene-nonmetal composite material and a preparation method thereof are provided for 3D printing. The composite material has excellent properties of high hardness, high strength, corrosion resistance and easiness in processing and use; and after the 3D printing, the composite can be sintered and quenched by virtue of laser to promote the compactness of particles of the composite material and to refine crystal particles, so that the mechanical properties of a 3D printing product can be improved.

Description

technical field [0001] The invention relates to the technical field of graphene application, in particular to a 3D printed graphene-nonmetal 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 of grap...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01M4/36
CPCH01G11/86H01M4/364Y02E60/10
Inventor 尹宗杰楚双印
Owner 尹宗杰
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