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Device for continuously preparing graphene and method for producing graphene

A graphene and graphite technology, which is applied in the field of continuous graphene preparation devices, can solve the problems of many defects, small graphene size, and low peeling efficiency, and achieve the effects of less structural defects, high production efficiency, and reduced structural defects

Active Publication Date: 2017-04-26
淮安双洋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of small size, many defects and low stripping efficiency of the graphene obtained by the current graphene mechanical peeling equipment, and proposes a device for continuously preparing graphene and a graphene production method, and its purpose is to relate to a method suitable for large-scale industrialization A device that can continuously and efficiently produce high-quality graphene

Method used

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  • Device for continuously preparing graphene and method for producing graphene
  • Device for continuously preparing graphene and method for producing graphene
  • Device for continuously preparing graphene and method for producing graphene

Examples

Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a device for continuously grinding slurry to prepare graphene.

[0034] A device for continuously preparing graphene, such as figure 1 As shown, it includes raw material grinding tank (1), grinding medium storage bin (2), stirring tank (3), continuous grinding mechanism (4), storage tank (5), centrifugal filter device (6) and drying device ( 7). The raw material grinding tank (1) is equipped with a blade-type agitating mill (11) for coarse grinding of graphite raw materials; the grinding medium storage bin (2) is used to store grinding media; the bottom of the raw material grinding tank and the grinding media storage bin are both set The outlets (12), (21); the stirring tank (3) is used to prepare graphite slurry, the stirring tank (3) is provided with an upper feeding port (31) and a lower feeding port (32), and the outlet of the raw material grinding tank The feed port (12) and the discharge port (21) of the grinding medium storage bin are r...

Embodiment 2

[0039] The present embodiment provides a kind of production method of graphene, and it is the method that adopts the preparation device of the graphene of embodiment 1 to carry out production, and this method comprises the following steps:

[0040] (1) Put the graphite raw material into the raw material grinding tank, add quartz sand and ceramic beads with a diameter of 2mm, and use media grinding to roughly grind the graphite raw material;

[0041] (2) Put the coarsely ground graphite raw material in the raw material grinding tank into the stirring tank through the upper feeding port of the stirring tank, then add the grinding medium in the grinding medium storage bin, inject water from the lower feeding port, and set the stirring tank The stirring speed is 500rpm to obtain a graphite dispersion slurry; wherein the grinding medium is composed of the following components by weight percentage: 40% amphiphilic polymer, 30% nano-modified hydrotalcite, 10% micro-expansion agent, an...

Embodiment 3

[0048] The present embodiment provides a kind of production method of graphene, and it is the method that adopts the preparation device of the graphene of embodiment 1 to carry out production, and this method comprises the following steps:

[0049] (1) Put the graphite raw material into the raw material grinding tank, add ceramic beads and zirconium beads with a diameter of 5mm, and use media grinding to roughly grind the graphite raw material;

[0050] (2) Put the coarsely ground graphite raw material in the raw material grinding tank into the stirring tank through the upper feeding port of the stirring tank, then add the grinding medium in the grinding medium storage bin, inject water from the lower feeding port, and set the stirring tank The stirring speed is 800rpm to obtain a graphite dispersion slurry; wherein the grinding medium is composed of the following components by weight percentage: 30% amphiphilic polymer, 30% nano-modified hydrotalcite, 10% micro-expansion agent...

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Abstract

The invention belongs to the technical field of graphene and particularly relates to a device for continuously preparing graphene and a method for producing graphene. The device comprises a raw material grinding tank, a grinding medium storage bin, a stirring tank, a continuous grinding mechanism, a material storage tank, a centrifugal filtering device and a drying device. A blade type stirring mill is arranged in the raw material grinding tank. The continuous grinding mechanism comprises a high-pressure pump, the grinding bin, a flow guide ring, a dispersion impeller and a transmission shaft. The flow guide ring is located in the middle of the grinding bin and fixedly connected with the transmission shaft, the dispersion impeller is located between the flow guide ring and the bottom of the grinding bin, and the transmission shaft passes through the center of the dispersion impeller. The probability that graphene is smashed is reduced through continuous stripping step by step, structural defects of graphene are reduced, and meanwhile the situation that structural defects are caused again to stripped graphene due to re-grinding is avoided. The invention further discloses the method for producing graphene by means of the device for continuously preparing graphene from the slurry.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to a device for continuously preparing graphene and a graphene production method. Background technique [0002] Graphene is made of carbon atoms with sp 2 A two-dimensional material with a honeycomb hexagonal planar structure formed by hybridization. Graphene Graphene has good electrical and optical properties, mechanical properties, thermal conductivity and high charge carrier mobility, as well as strong mechanical strength and flexibility. It is widely used in electronics, magnetism, optics, biology It has broad application prospects in science and other fields. Due to its potential application prospects in many fields, the basic and applied research of graphene has become a hot research topic for scientists from all over the world. [0003] Since the discovery of graphene, the preparation of graphene has been a research hotspot. The preparation methods of graphene include me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/19
CPCC01B2204/04C01P2004/04
Inventor 陈庆孙丽枝
Owner 淮安双洋新材料有限公司
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