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Layer cast molding graphene-nonmetallic composite material and preparation method

A composite material and non-metal technology, which is applied in the field of layer casting graphene-non-metal composite materials and preparation, can solve the problems of easy agglomeration, restriction and high surface active energy, and achieves easy processing and use, low resistivity, high The effect of hardness

Active Publication Date: 2017-06-13
GUANGZHOU FENGSHANG ELECTRIC APPLIANCE
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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

[0024] The layer cast graphene-nonmetal composite material of the present embodiment, its preparation method comprises the steps:

[0025] (1) Mix graphene quantum dots and boron nitride powder under the action of an ultrasonic probe, use pure water high-pressure liquid flow method for high-pressure grinding and shearing, the pressure is 200MPa, the time is 30 minutes, and the temperature is 2°C. Composite slurry material;

[0026] (2) Carry out vacuum drying to the composite slurry material that makes, and pressure is 150Pa, and drying time is 60min, obtains anhydrous composite powder material;

[0027] (3) The dried anhydrous composite powder material is quenched and refined by laser treatment to promote molecular rearrangement and graft fusion to obtain a layer-cast graphene-nonmetal composite material.

[0028] In other embodiments, graphene quantum dots can also be replaced by graphene microplates or a mixture of graphene quantum dots and graphene microplates; the pressu...

Embodiment 2

[0030] The layer cast graphene-nonmetal composite material of the present embodiment, its preparation method comprises the steps:

[0031] (1) Under the action of an ultrasonic reactor, the graphene microflakes and carbon fibers are mixed, and the composite pulp is obtained by high-pressure grinding and shearing by the propanol high-pressure liquid flow method, the pressure is 200 MPa, the time is 30 minutes, and the temperature is 18 ° C. body material;

[0032] (2) Drying the prepared composite slurry material under normal pressure, the drying time is 10-60min, to obtain anhydrous composite powder material;

[0033](3) The dried anhydrous composite powder material is subjected to laser quenching and refining to promote molecular rearrangement and graft fusion to obtain a layer-cast graphene-nonmetal composite material.

Embodiment 3

[0035] The layer cast graphene-nonmetal composite material of the present embodiment, its preparation method comprises the steps:

[0036] (1) Under the action of an ultrasonic probe, the graphene microsheets and carbon nanotubes are mixed, and the physical grinding method is used for high-pressure grinding and shearing, the pressure is 150 MPa, and the time is 45 minutes to obtain a composite slurry material;

[0037] (2) supercritically dry the prepared composite slurry material, the pressure is 300Pa, and the drying time is 100min to obtain anhydrous composite powder material;

[0038] (3) The dried anhydrous composite powder material is subjected to laser quenching and refining to promote molecular rearrangement and graft fusion to obtain a layer-cast graphene-nonmetal composite material.

[0039] In other embodiments, the pressure of supercritical drying can be in the range of 10-1000 Pa, and the drying time is 15-200 min.

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Abstract

The invention relates to a layer cast molding graphene-nonmetallic composite material and a preparation method. The method for preparing the layer cast molding graphene-nonmetallic composite material comprises the following steps: mixing, grinding and shearing graphene quantum dots and / or micro-chips and nonmetallic substances under the ultrasonic action, drying, performing laser treatment, quenching and refining, so that molecular rearrangement and grafting fusion can be promoted. The layer cast molding graphene-nonmetallic composite material prepared by the invention has excellent performances of high hardness, high strength and low electrical resistivity, is easy to produce and can be widely applied to the processing fields of dental implant, super electric drills and other materials, the field of super-capacitor energy storage materials, the field of catalyst materials, the field of heat dissipation materials, the field of medicines, the field of coating materials, the fields of conductive ink and photoelectric sensor materials, the bio-relevant field and the like.

Description

technical field [0001] The invention relates to the technical field of graphene application, in particular to a layer-cast graphene-nonmetal composite material and a preparation method thereof. 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 graphene are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/194C01B33/02C01B35/02C08L101/00C08K3/04C08L79/02C08L21/00C08L65/00C08L79/04
CPCC01B33/02C01B35/023C01P2004/80C08K3/04C08L101/00C08L79/02C08L21/00C08L65/00C08L79/04
Inventor 尹宗杰楚双印张文娟
Owner GUANGZHOU FENGSHANG ELECTRIC APPLIANCE
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