A complete set of equipment for dry conical grinding and exfoliating graphene

A stripping device and cone-shaped technology, applied in the direction of graphene, nano-carbon, etc., can solve the problems of difficult removal of solvent residues, product pollution, etc., to improve the efficiency of mechanical stripping, reduce exhaust emissions, and improve the utilization rate of raw materials and products. Yield effect

Active Publication Date: 2019-01-04
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the introduction of organic solvents during the mechanical exfoliation process can improve the efficiency of the intercalation reaction and control the particle distribution to a certain extent, the solvent residues in graphene are not easy to remove and easily cause product contamination.

Method used

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  • A complete set of equipment for dry conical grinding and exfoliating graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 500g of commercially available graphite and place it in a constant temperature box-type drying oven at 80°C for 2 hours to remove moisture and other impurities adsorbed on the graphite surface, and cool it for later use;

[0021] Take by weighing 150g1-ethyl-3-methylimidazole trifluoromethanesulfonimide, and be dissolved in 850g propylene carbonate solvent, prepare the propylene carbonate solution with surfactant, cool for subsequent use;

[0022] will step Cool and dry graphite in the middle, add it after metering through the feed port of the pre-reaction device, heat it to 450±5°C through the microwave preheating device, and control the microwave preheating time at 30 min, so that the graphite raw material can form micro-expanded graphite, and then mix with After metering the layer liquid feed port, add 800ml of intercalation solution, and transfer the mixture to the stirring device for pre-intercalation reaction. The stirring device rotates at 3500 rp...

Embodiment 2

[0027] Weigh 500g of commercially available graphite and place it in a constant temperature box-type drying oven at 80°C for 2 hours to remove moisture and other impurities adsorbed on the graphite surface, and cool it for later use;

[0028] Take by weighing 150g1-ethyl-3-methylimidazole trifluoromethanesulfonic acid, and be dissolved in the 850g propylene carbonate solvent, prepare the propylene carbonate solution with surfactant, cool for subsequent use;

[0029] will step The graphite that is cooled and dried in the middle is added after metering through the feed port of the pre-reaction device, heated to 450±5°C by the micro-bo pre-heating device, and the microwave pre-heating time is controlled at 30 min, so that the graphite raw material forms micro-expanded graphite, and then passed through After metering the intercalation liquid inlet, add 900ml of intercalation liquid, and transfer the mixture to the stirring device for pre-intercalation reaction. The stirr...

Embodiment 3

[0034] Weigh 500g of commercially available graphite and place it in a constant temperature box-type drying oven at 80°C for 2 hours to remove moisture and other impurities adsorbed on the graphite surface, and cool it for later use;

[0035] Take by weighing 200g1-ethyl-3-methylimidazole trifluoromethanesulfonyl carbon, and be dissolved in 900g propylene carbonate solvent, prepare the propylene carbonate solution with surfactant, cool for subsequent use;

[0036] will step The graphite that is cooled and dried in the middle is added after metering through the feed port of the pre-reaction device, and heated to 500±5°C by the micro-wave pre-heating device, and the microwave pre-heating time is controlled at 35 min, so that the graphite raw material forms micro-expanded graphite, and then is mixed with the After metering the intercalation liquid inlet, add 900ml of intercalation liquid, and transfer the mixture to the stirring device for pre-intercalation reaction. The ...

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Abstract

The invention discloses a graphene dry-state conical grinding stripping complete plant which comprises a shear dispersion function pre-reaction device, a conical grinding high-pressure-resistant stripping device, an air flow classification system and a recovery system. The graphene dry-state conical grinding stripping complete plant can implement dry-state high-efficiency environment-friendly production of graphene. The prepared graphene powder has the advantages of large size, fewer defects and favorable electric conductivity, and is suitable for the application fields of solar cells, sensors, nano electronics, high-performance nano electronic devices and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials, and in particular relates to a complete set of equipment for dry conical grinding and exfoliating graphene. Background technique [0002] Graphene is a two-dimensional carbon atom crystal discovered by Andre K. Geim of the University of Manchester in 2004, and won the Nobel Prize in Physics in 2010, which once again sparked an upsurge in carbon material research. Due to its unique structure and photoelectric properties, it has become a research hotspot in the fields of carbon materials, nanotechnology, condensed matter physics and functional materials, attracting many scientific and technological workers. Graphene has excellent electrical and thermal conductivity and low thermal expansion coefficient, and can be used in electrode materials, composite materials, etc. [0003] Since graphene can be applied in many fields and plays a role that other materials cannot repla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/19
Inventor 陈庆曾军堂王镭迪
Owner CHENDU NEW KELI CHEM SCI CO LTD
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