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Method and device for preparing graphene through processing dry ice by shock waves

A technology of graphene and shock wave, applied in the direction of graphene, nano-carbon, etc., can solve the problems of high cost, complicated process, low cost, etc., and achieve the effect of short time-consuming, simple process and low cost

Inactive Publication Date: 2014-03-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high cost and complex process of the existing graphene preparation method, the object of the present invention is to provide a method and device for preparing graphene by shock wave treatment of dry ice. The method is low in cost, can be industrialized, and is applicable to mechanics, Electrical and optical field

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  • Method and device for preparing graphene through processing dry ice by shock waves
  • Method and device for preparing graphene through processing dry ice by shock waves
  • Method and device for preparing graphene through processing dry ice by shock waves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Dry ice and calcium hydride are selected as the precursor material, and the dry ice and calcium hydride are uniformly mixed at a mass ratio of 3:1 to make a powder raw material, and the powder raw material is pressed into a shock wave synthesis graphene device to form a preform, and the preform is The density is 60%. The nitromethane liquid explosive detonation is used to drive the stainless steel flyer to hit the stainless steel sample box at high speed to generate instantaneous high temperature and high pressure for the shock wave synthesis of graphene, and the sample is recovered and cleaned.

[0053] The charge height of the nitromethane liquid explosive is 130mm, the material of the flyer is stainless steel, and the thickness of the flyer is 2mm. The speed loss of the flyer during flight is negligible. The calculation shows that the speed of the flyer hitting the sample box is 2.87km / s.

[0054] For the XPS spectrum of the experimental product, see figure 2 , XRD...

Embodiment 2

[0056] Dry ice and calcium hydride are selected as the precursor material, and the dry ice and calcium hydride are uniformly mixed at a mass ratio of 4:1 to make a powder raw material, and the powder raw material is pressed into a shock wave synthesis graphene device to be pressed into a blank, and the blank is dense. 70%. The nitromethane liquid explosive detonation is used to drive the stainless steel flyer to hit the stainless steel sample box at high speed to generate instantaneous high temperature and high pressure for the shock wave synthesis of graphene, and the sample is recovered and cleaned.

[0057] The charge height of the nitromethane liquid explosive is 100mm, the flyer material is stainless steel, and the thickness of the flyer is 2mm. The speed loss of the flyer during the flight is negligible, and the calculation shows that the speed of the flyer hitting the sample box is 2.58km / s.

[0058] From the XPS spectrum of the experimental product, it can be seen tha...

Embodiment 3

[0061] Dry ice and calcium hydride are selected as the precursor material, and the dry ice and calcium hydride are uniformly mixed at a mass ratio of 2:1 to make a powder raw material, and the powder raw material is pressed into a shock wave synthesis graphene device to be pressed into a preform, and the preform has a high density. 70%. The nitromethane liquid explosive detonation is used to drive the stainless steel flyer to hit the stainless steel sample box at high speed to generate instantaneous high temperature and high pressure for the shock wave synthesis of graphene, and the sample is recovered and cleaned.

[0062] The charge height of the nitromethane liquid explosive is 150mm, the material of the flyer is stainless steel, and the thickness of the flyer is 2mm. The speed loss of the flyer during the flight is negligible, and the calculation shows that the speed of the flyer hitting the sample box is 3.07km / s.

[0063] From the XPS spectrum of the experimental produc...

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Abstract

The invention discloses a method and a device for preparing graphene through processing dry ice by shock waves, and belongs to the field of material processing. Firstly, the dry ice is selected as a carbon source, calcium hydride, lithium aluminum hydride or sodium borohydride is selected as a reducing agent, and the dry ice and the reducing agent are evenly mixed in a mass ratio of 2:1-4:1 to prepare a raw powder material; and then the raw powder material is shocked to induce a chemical reaction through the instantaneous high temperature and high pressure produced by high-speed impact of flying pieces driven by explosive detonation so as to obtain the high-quality graphene. The method for preparing the graphene is low in cost, simple in process, short in consumed time and capable of realizing industrial production. In addition, a way to deal with the global warming problem is provided, and the dry ice can be turned into the useful graphene.

Description

technical field [0001] The invention relates to a method and a device for preparing graphene by shock wave treatment of dry ice, belonging to the field of material treatment. Background technique [0002] In 2004, it was obtained by Novoselov of the University of Manchester in the United Kingdom by using tape to peel off highly oriented graphite, and discovered the relativistic particle characteristics of graphene carriers. The discovery of graphene announced a truly independent two-dimensional material, and the zero-dimensional fullerene (Fullerene) discovered in 1985 and the one-dimensional carbon nanotubes (carbon nanotubes) discovered in 1991, as well as the well-known sp 3 Hybrid 3D diamond and sp 2 The hybrid three-dimensional graphite together constitutes a large family of carbon systems, which expands the scope of carbon isomorphs and enables people to have a deeper understanding of the diversity of carbon elements. Graphene is a new type of carbon material in whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/184
Inventor 陈鹏万尹昊徐春晓高鑫周强
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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