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A method and equipment for preparing graphene under continuous pressure and microwave expansion

A technology of microwave expansion and graphene, applied in the field of new materials, can solve the problems of complex equipment process and high cost

Active Publication Date: 2017-03-15
GAOBEIDIAN LONGTAI FENGBO GRAPHENE PROCESSING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the electrolysis method can solve some of the above problems, the equipment process is complicated and the cost is very high

Method used

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  • A method and equipment for preparing graphene under continuous pressure and microwave expansion
  • A method and equipment for preparing graphene under continuous pressure and microwave expansion
  • A method and equipment for preparing graphene under continuous pressure and microwave expansion

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Depend on Figure 3-5 As can be seen, the graphene production equipment of the present embodiment is divided into two sections in total, and the first section is an expansion section 21, which is conveyed by a high-temperature-resistant high-silica cloth before entering the circulating conveyor belt of the working chamber of the expansion section 21, and the expansion section 21 The length of the working cavity is 1900mm, the section is pentagonal, and has a vertical axis of symmetry. The total power of the microwave generating system 23 of the expansion section 21 is 36kW, which is distributed on the two sides and the bottom side of the upper side. 11 groups of microwave generating systems 23 are installed on both sides of the upper part, and 14 groups of microwave generating systems 23 are installed on the lower part; body, the total length of the working cavity of the roasting section 22 is 3000mm, equipped with a three-layer heat insulation structure, the middle lay...

Embodiment 2

[0062] The overall structure of this embodiment is the same as that of Embodiment 1, and the inside of the puffing section 21 is a crawler platform type pressure-sustaining conveyor belt puffing device, such as figure 2 Shown is the end structure of the device. The crawler platform is composed of a number of upper crawler units 12 and lower crawler units 13. The upper and lower crawler units are driven to rotate to the starting point of the horizontal area (not shown at the end of the crawler platform) At the corresponding position on the other side of the device), use the male / female mold mortise riveting mode (similar to the joint part 14 in the figure) to make the upper and lower crawlers form a closed mold at this end, and form a horizontally moving platform on the opposite surface , the operation of the steel belt and the anti-friction structure are the same as those described in Embodiment 1. When the end of the crawler platform as shown in the figure is separated from t...

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Abstract

The invention discloses a method and a device for preparing the graphene by holding pressure continuous microwave puffing. The method comprises the following steps: transporting the graphite or graphite intercalated compound to the place between two relatively rotated circulating rotation belts, wherein the two circulating rotation belts have a continuous pressure on the graphite or graphite intercalated compound, running the graphite or graphite intercalated compound along with the circulating rotation belts and performing microwave heating under a holding pressure state, puffing to form the graphene when the graphite or graphite intercalated compound reaches the tail end outlet of the circulating rotation belt. According to the condition that the graphite can be processed into different orders of intercalated compounds and can be heated and puffed, the continuous production mode under the holding pressure state can be created. Because of the holding pressure mode, the pressure released by the sudden pressure drop in the port can change the vector synthesized by three-axis forces in x, y and z directions, and then the upward jacking force and the shearing force can be obtained, the device is able to realize the expanding in each direction, namely the detonation puffing effect and can sufficiently open the intercalated sheet.

Description

technical field [0001] The invention relates to a preparation method of graphene, which belongs to the field of new materials. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film composed of carbon atoms in a hexagonal honeycomb lattice with sp2 hybrid orbitals. It is only one carbon atom thick. 2D materials. Generally, within 5 layers, it can be called graphene. Graphene is the thinnest and hardest nano-material known in the world. It is almost completely transparent and only absorbs 2.3% of light; its thermal conductivity is as high as 5300W / m K, which is higher than that of carbon nanotubes and diamonds. The electron mobility exceeds 15000cm2 / V·s, which is higher than carbon nanotubes or silicon crystals, and the resistivity is only about 10-6Ω·cm, which is lower than copper or silver. It is the material with the smallest resistivity in the world. Graphene is by far the strongest mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184
Inventor 贾纬民
Owner GAOBEIDIAN LONGTAI FENGBO GRAPHENE PROCESSING CO LTD