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A production device of graphene and a preparing method

A production device and graphene technology, which is applied in the production device and preparation field of two-dimensional nano-materials, can solve the problems of insufficient performance, difficulty in grasping shear force, product edge burrs, etc., to achieve automatic management and high efficiency The effect of shear strength and low cost

Inactive Publication Date: 2016-05-18
江苏碳谷二维世界科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, graphene prepared by mechanical method has many applications, but it generally has the disadvantage of low yield, which brings challenges to the subsequent application of graphene.
In addition, due to the difficulty of grasping the shear force of peeling, some products have "overgrinding" phenomenon, resulting in "burrs" and irregular sharp angles on the edge of the product, which will have an adverse impact on the application of graphene in related industries, and cannot give full play to its performance

Method used

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  • A production device of graphene and a preparing method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Pour 50kg of graphite flakes and 350kg of distilled water into the reaction kettle, add 1kg of sodium cholate dispersant, start the motor to stir the mixture, and mix the materials evenly. After stirring evenly, the reaction kettle was closed. By means of steam heating, keep the temperature at 80 degrees Celsius, and increase the speed of the shearer to 3000rpm / min. At this time, due to the high speed in the reactor, the shear between the materials themselves and the interaction with the shear grooves on the inner wall , so that the graphite is peeled off layer by layer. Keep the constant temperature and rotation speed, stop the reaction after 5 hours, discharge the upper suspension into the storage tank through the discharge port, and let it stand for 24 hours. Transfer the graphene suspension in the storage tank to the centrifuge, the centrifuge speed is 1000-6000rpm / min, centrifuge for 10min, through centrifugation, the unstripped graphite has multi-layer graphene p...

Embodiment 2

[0052] Inject 20kg of graphite flakes and 400kg of N-methylpyrrolidone into the reactor, start the motor to stir, and mix the materials evenly. After stirring evenly, the reaction kettle was closed. Put water vapor into the jacket, keep the temperature in the reactor at 90 degrees Celsius, and increase the speed of the shearer to 3500rpm / min. Due to the higher speed, the shearing between the materials themselves and the shearing grooves on the inner wall The interaction makes the graphite peeled off layer by layer. Keep the constant temperature and rotation speed, stop the reaction after 3 hours, discharge the upper suspension into the storage tank through the discharge port, and let it stand for 15 hours. Transfer the graphene suspension in the storage tank to the centrifuge, the centrifuge speed is 2000-5000rpm / min, centrifuge for 1h, through centrifugation, the unstripped graphite has multi-layer graphene precipitated at the bottom, take the supernatant liquid, vacuum fil...

Embodiment 3

[0054] Inject 30kg of graphite flakes and 500kg of N,N-dimethylformamide into the reactor, start the motor to stir, and mix the materials evenly. After stirring evenly, the reaction kettle was closed. By means of steam heating, keep the temperature at 100 degrees Celsius, and increase the speed of the shearer to 4500rpm / min. Due to the high speed, the shear between the materials themselves and the interaction with the shear grooves on the inner wall, the graphite is crushed. Peel off layer by layer. Keep the constant temperature and rotation speed, stop the reaction after 7 hours, discharge the upper layer suspension into the storage tank through the discharge port, and let it stand for 12 hours. Transfer the graphene suspension in the storage tank to the centrifuge, the centrifuge speed is 1000~6000rpm / min, and centrifuge for 2 hours. After centrifugation, the graphite that has not been peeled off has been precipitated by multi-layer graphene at the bottom, and the supernata...

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Abstract

The invention relates to a production device of graphene. The device is characterized in that the device comprises a reaction kettle (1) and a motor (2), the motor is mounted at the top of the reaction kettle (1), the output end of the motor (2) is connected to a shearing machine (3), the top of the reaction kettle (1) is provided with a feeding port (4), a pressure gage (5) and a temperature meter (6), the inner wall of the reaction kettle (1) is provided with shearing slots (7), a material discharging port (8) is disposed in the middle and lower part of the reaction kettle (1), and a jacket (9) is disposed outside the reaction kettle (1) and is provided with a hot-medium inlet and an outlet. When the device is used for graphene production, the yield is high, the cost is low and the prepared graphene is high in quality.

Description

technical field [0001] The invention relates to a production device and a preparation method of a two-dimensional nano new material, in particular to a graphene production device and a preparation method. Background technique [0002] Graphite is a typical layered structure, each carbon is equidistantly connected to adjacent carbons, and the carbons in each layer are arranged in a hexagonal ring, and the carbon hexagonal rings in the upper and lower adjacent layers are displaced from each other through the direction parallel to the network plane. Then superimposed to form a layered structure, the orientation and distance of the displacement will lead to different polytype structures. The distance between carbon atoms in the upper and lower layers is much larger than the distance between carbon in the same layer (intra-layer C-C spacing = 0.142nm, inter-layer C-C spacing = 0.340nm), and the carbon atoms between layers pass through van der Waals The forces are combined, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 戴加龙
Owner 江苏碳谷二维世界科技有限公司
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