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Method of preparing graphene nanoplate size through nanometer-distribution collision stripping and graphene nanoplate size

A technology of graphene microflakes and graphene suspensions, applied in the direction of graphene, nano-carbon, etc., can solve the problems of reduced peeling efficiency and achieve the effects of increased collision probability, uniform particle size distribution, and high output

Inactive Publication Date: 2017-04-19
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, the long-term stirring during the liquid phase stripping makes the fluid in the container have a certain distribution, and the fluid always flows repeatedly in a certain area, which reduces the collision between particles, thus reducing the stripping efficiency.

Method used

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  • Method of preparing graphene nanoplate size through nanometer-distribution collision stripping and graphene nanoplate size
  • Method of preparing graphene nanoplate size through nanometer-distribution collision stripping and graphene nanoplate size

Examples

Experimental program
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Effect test

Embodiment 1

[0049] 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;

[0050] Take by weighing 150g tetrabutylammonium bicarbonate, and be dissolved in the 850g propylene carbonate solvent, prepare the propylene carbonate solution with surfactant, after all dissolving, step The pretreated graphite is poured into an organic solution dissolved with a surfactant, stirred evenly and soaked for 1 hour to obtain a graphite dispersion;

[0051] will step The graphite dispersion treated by intercalation is continuously injected into the nano-splitting and colliding homogenizer, and a certain pressure is set for the front cavity, so that the graphite dispersion passes through the nano-splitting and colliding homogenizer at a speed of 0.5m / s , the number of baffles is 20, the number of small holes on the baffle i...

Embodiment 2

[0057] 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;

[0058] Take by weighing 150g tetrabutylammonium bicarbonate, and be dissolved in the 850g propylene carbonate solvent, prepare the propylene carbonate solution with surfactant, after all dissolving, step The pretreated graphite is poured into an organic solution dissolved with a surfactant, stirred evenly and soaked for 1 hour to obtain a graphite dispersion;

[0059] will step The graphite dispersion treated by intercalation is continuously injected into the nano-splitting and colliding homogenizer, and a certain pressure is set for the front cavity so that the graphite dispersion passes through the nano-splitting and colliding homogenizer at a speed of 2m / s. The number of baffles is 20, the number of small holes on the baffle is 40...

Embodiment 3

[0065] 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;

[0066] Take by weighing 150g tetrabutylammonium bicarbonate, and be dissolved in the 850g propylene carbonate solvent, prepare the propylene carbonate solution with surfactant agent, after all dissolving, step The pretreated graphite is poured into an organic solution dissolved with a surfactant, stirred evenly and soaked for 1 hour to obtain a graphite dispersion;

[0067] will step The graphite dispersion treated by intercalation is continuously injected into the nano-splitting and colliding homogenizer, and a certain pressure is set for the front cavity so that the graphite dispersion passes through the nano-splitting and colliding homogenizer at a speed of 2m / s. The number of baffles is 40, the number of small holes on the baffle...

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Abstract

The invention discloses a method of preparing graphene nanoplate size through nanometer-distribution collision stripping and the graphene nanoplate size. According to the method of preparing the graphene nanoplate size through nanometer-distribution collision stripping, the graphene nanoplate size is prepared through stripping by means of shear force generated by nanometer-distribution collision; a graphite raw material is dispersed into size, the size is distributed through the nanometer distribution technology, the distributed size collides with stop sheets arranged in a channel in a staggered manner, and so that shear is formed; the size which is not blocked by the first stop sheet can be stopped by other stop sheets, so that fine particles are generated, after the size is stopped and cut layer by layer, the graphene size is shorn layer by layer, and therefore the evenly dispersed graphene size is obtained. The graphene obtained through the method is uniform in particle size, safe, free of pollution, and mass continuous production can be achieved.

Description

technical field [0001] The invention relates to a method for preparing graphene microsheet slurry with better particle size distribution through nano-splitting and colliding exfoliation. Background technique [0002] Single-layer graphene is a hexagonal crystal with a stable chemical structure, and the complete graphene single-crystal structure is mainly composed of sp 2 The hybrid orbital is dominant, so it has good electrical conductivity. In addition, it also exhibits good mechanical properties, thermal properties and optical properties. Graphene is the thinnest and hardest nanomaterial found so far. It has good mechanical and mechanical properties and is widely used in many fields. For example, adding a small amount of graphene to lubricating oil can greatly improve the service life of bearings. Single-layer graphene has good light transmission and can be used in the field of solar energy to have a large application space. As everyone continues to explore the properti...

Claims

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Application Information

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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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