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Preparation method of graphene

A graphene and asphalt technology, applied in the field of graphene, can solve the problem that waste asphalt cannot be reused

Inactive Publication Date: 2020-10-27
河南墨特石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention solves the problem that waste pitch cannot be reused by facilitating the preparation of graphene from waste pitch. The raw material of waste pitch is cheap and easy to obtain. It can reduce the cost of graphene preparation and improve economic benefits when used to prepare graphene. The method for preparing graphene by using waste pitch in the present invention is simple, easy to operate, suitable for mass production, and the prepared graphene has strong physical and chemical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of graphene preparation method, comprises the following steps:

[0025] Step 1: Put the waste asphalt into the crusher for crushing treatment to obtain waste asphalt lumps, then put the waste asphalt lumps into the vibrating screening machine for screening to remove impurities, and then sieve the waste asphalt The block and C2-C5 dichlorinated hydrocarbons were mixed and stirred for 25 minutes, and solvent extraction was performed to dissolve the asphalt in the waste asphalt block into the solvent to obtain a mixture, and the mixing speed was controlled to be 180 rpm ;

[0026] Step 2: The mixture obtained in the above step 1 is subjected to a secondary screening process to remove particulate filter residues, and the slurry mixture is retained for subsequent use;

[0027] Step 3: first add the slurry mixture retained in the above step 2 into an ultra-high-speed centrifuge for centrifugation, remove the residual particles of the slurry mixture, and obtain the sup...

Embodiment 2

[0033] A kind of graphene preparation method, comprises the following steps:

[0034] Step 1: Put the waste asphalt into the crusher for crushing treatment to obtain waste asphalt lumps, then put the waste asphalt lumps into the vibrating screening machine for screening to remove impurities, and then sieve the waste asphalt The block and C2-C5 dichlorinated hydrocarbons were mixed and stirred for 25 minutes, and solvent extraction was performed to dissolve the asphalt in the waste asphalt block into the solvent to obtain a mixture, and the mixing speed was controlled to be 180 rpm ;

[0035] Step 2: The mixture obtained in the above step 1 is subjected to a secondary screening process to remove particulate filter residues, and the slurry mixture is retained for subsequent use;

[0036] Step 3: first add the slurry mixture retained in the above step 2 into an ultra-high-speed centrifuge for centrifugation, remove the residual particles of the slurry mixture, and obtain the sup...

Embodiment 3

[0042] A kind of graphene preparation method, comprises the following steps:

[0043] Step 1: Put the waste asphalt into the crusher for crushing treatment to obtain waste asphalt lumps, then put the waste asphalt lumps into the vibrating screening machine for screening to remove impurities, and then sieve the waste asphalt The block and C2-C5 dichlorinated hydrocarbons were mixed and stirred for 25 minutes, and solvent extraction was performed to dissolve the asphalt in the waste asphalt block into the solvent to obtain a mixture, and the mixing speed was controlled to be 180 rpm ;

[0044] Step 2: The mixture obtained in the above step 1 is subjected to a secondary screening process to remove particulate filter residues, and the slurry mixture is retained for subsequent use;

[0045] Step 3: first add the slurry mixture retained in the above step 2 into an ultra-high-speed centrifuge for centrifugation, remove the residual particles of the slurry mixture, and obtain the sup...

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Abstract

The invention provides a preparation method of graphene. The method comprises the following steps of: 1, crushing and primarily screening waste asphalt; mixing with a solvent to obtain a mixture, andcarrying out secondary screening treatment on the mixture; carrying out centrifugal treatment on the slurry mixture to obtain supernatant slurry, carrying out separation treatment on the supernatant slurry to obtain asphalt, mixing the asphalt with an auxiliary agent to obtain an asphalt pre-processing base material, preparing carbon powder, carrying out high-temperature baking and washing treatment on the carbon powder, carrying out oscillation dispersion treatment, and carrying out atomization drying treatment to obtain graphene. According to the invention, the graphene is prepared from thewaste asphalt; the problem that the waste asphalt cannot be reused is solved, the waste asphalt raw material is low in price and easy to obtain, the graphene preparation cost can be reduced and the economic benefit can be improved when the waste asphalt is used for preparing the graphene; meanwhile, the method for preparing the graphene from the waste asphalt is simple, easy to operate and suitable for large-batch production, and the prepared graphene is high in physical and chemical properties.

Description

technical field [0001] The invention relates to the field of graphene, in particular to a method for preparing graphene. Background technique [0002] Graphene is a carbon atom with sp 2 Hybrid orbitals form a hexagonal two-dimensional carbon nanomaterial with a honeycomb lattice. Graphene has excellent optical, electrical, and mechanical properties, and has important applications in materials science, micro-nano processing, energy, biomedicine, and drug delivery. Prospect, considered to be a revolutionary material in the future, the common powder production method of graphene is the redox method, which is prepared by subjecting graphite to strong oxidation to obtain graphene oxide and then exfoliating it Graphene oxide is finally reduced to obtain graphene, but this method has the problems of high energy consumption, low efficiency, high cost and serious pollution, which is not conducive to green and sustainable development. [0003] In recent years, my country's asphalt ...

Claims

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Application Information

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IPC IPC(8): C01B32/19
CPCC01B32/19
Inventor 张杰
Owner 河南墨特石墨烯科技有限公司
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