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Preparation device and preparation method for super high-speed sealed spiral flow field graphene nanosheets

A technology for graphene nanosheets and preparation devices, which is applied in the direction of graphene, nano-carbon, chemical instruments and methods, etc., to achieve outstanding technical advantages and vitality, and the effect of low material consumption and energy consumption

Pending Publication Date: 2019-03-22
SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although graphene preparation methods include mechanical exfoliation, epitaxial growth, chemical vapor deposition (CVD), chemical redox, organic synthesis, ultrasonic dispersion, carbon nanotube cutting, solvothermal, plasma enhancement, There are many methods such as flame method and arc discharge method, but the preparation technology that is green, pollution-free, high-quality, has strong industrial production capacity, and can be customized and multi-standard production still needs breakthroughs urgently

Method used

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  • Preparation device and preparation method for super high-speed sealed spiral flow field graphene nanosheets
  • Preparation device and preparation method for super high-speed sealed spiral flow field graphene nanosheets
  • Preparation device and preparation method for super high-speed sealed spiral flow field graphene nanosheets

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preparation example Construction

[0031] see Figure 1 to Figure 10 , the present invention relates to an ultra-high-speed sealed spiral flow field graphene nanosheet preparation device and a preparation method, which includes an ultra-high-speed sealed spiral flow field disperser 5, and the ultra-high-speed sealed spiral flow field disperser 5 includes the equipment base 5.1, which is equipped with an ultra-high-speed sealed spiral flow field stripping chamber 5.2 inside, and the ultra-high-speed sealed spiral flow field stripping chamber 5.2 is driven by a high-speed transmission box 5.3 to perform high-speed Rotate, the high-speed transmission box 5.3 can drive the ultra-high-speed sealed spiral flow field stripping chamber 5.2 adopting the design of the sealed spiral flow field to realize the linear speed of the rotor from 20 to 200m / s, thereby reaching ultra-high speed, the ultra-high-speed sealed spiral flow field The feed port of the spiral flow field stripping cavity 5.2 is connected to the feed pump s...

Embodiment 1

[0040] 1000g, 10 mesh flake graphites are passed through the batching kettle 1 through the graphite powder feeding pipe 3 and the suction predisperser 4, and the water of 1000ml also enters the batching kettle 1 through the solvent feeding pipe 2 simultaneously, and the material is further processed in the batching kettle 1. Stir and disperse evenly;

[0041] Turn on the ultra-high-speed sealed spiral flow field disperser 5, and after the ultra-high-speed rotor linear speed reaches 60m / s, the uniformly stirred material in the batching kettle 1 enters the stripping chamber through the lower feeding port of the disperser 5, Peel off for 10 minutes;

[0042] After the material stripping is completed, the material enters the settling kettle 6 through the discharge port above the stripping chamber and naturally settles for 0.1h, and the settled material is transferred to the vertical separator 7 for centrifugation at 200rpm and 60min;

[0043] After the centrifugation is completed...

Embodiment 2

[0046] The flake graphite in Example 1 is selected from 5000 meshes, the solvent is changed from water to N-methylpyrrolidone, the ultra-high-speed rotor line speed reaches 100m / s, the peeling time is 1h, the natural static sedimentation is 50h, and centrifugation is carried out at 10000rpm and 30min ; Others are identical with embodiment 1.

[0047] The obtained product is a graphene nanosheet product with a sheet diameter of about 3 μm, see the scanning electron microscope characterization results for details Figure 9 .

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Abstract

The invention relates to a preparation device and a preparation method for super high-speed sealed spiral flow field graphene nanosheets. The dust-free pretreatment of raw materials is realized by a powder suction type premixing device; a stripping device adopting a sealed spiral flow field design acts materials moving in the stripping device according to the spiral flow field by using the hydraulic (laminar flow, turbulence and hole) effect produced by super high-speed rotation, thereby damaging Vanderwals force among graphene sheets and realizing stripping of the graphene nanosheets; the graphene nanosheets with different thicknesses and sizes are obtained by using a settling device and a centrifugal separation device. The related technologies and devices break through the technical bottleneck of the current high-quality and low-cost preparation field of graphene. The preparation device and the preparation method can realize the production with low pollution, high quality, multiple specifications and customization, and have outstanding technical advantages and vitality.

Description

technical field [0001] The invention relates to a graphene material preparation technology and device, in particular to an ultra-high-speed sealed spiral flow field graphene nanosheet preparation device and a preparation method. Background technique [0002] Graphene is a new type of carbon material, which is the thinnest known material at present, with a thickness of only one carbon atom; it has a thickness of up to 2630m 2 / g theoretical specific surface area; excellent mechanical strength, such as up to 1TPa tensile modulus and 130GPa breaking strength, is the material with the highest mechanical strength found so far; excellent electrical conductivity, conductivity up to 10 6 S / m is the material with the best electrical conductivity found so far; it has excellent thermal conductivity, with a thermal conductivity as high as 5000W / m·K, and it is also the material with the highest thermal conductivity so far. In addition, it is almost transparent, absorbs only 2.3% of ligh...

Claims

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Application Information

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IPC IPC(8): C01B32/19
CPCC01B32/19C01B2204/32
Inventor 王勤生杨永强刘峥金玲朱志鑫区炳显王群谢雪
Owner SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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