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Preparation method of nano-graphite powder and method for preparing nano-graphite slurry from nano-graphite powder

A technology of nano-graphite powder and nano-graphite, applied in the directions of graphite, nanotechnology, chemical instruments and methods, etc., can solve the problem of difficulty in controlling particle size, and achieve the effect of short time, narrow particle size distribution and good uniformity.

Active Publication Date: 2020-04-10
哈尔滨万鑫石墨谷科技有限公司
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  • Summary
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  • Description
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  • Application Information

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Problems solved by technology

This method mainly emphasizes the composition of explosives, but it is not clear how to control the size of the obtained nano-graphite powder, and there is still the problem that the particle size is difficult to control

Method used

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  • Preparation method of nano-graphite powder and method for preparing nano-graphite slurry from nano-graphite powder
  • Preparation method of nano-graphite powder and method for preparing nano-graphite slurry from nano-graphite powder

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preparation example Construction

[0051] The specific embodiment part of the present invention provides a kind of preparation method of nano-graphite powder, and described method comprises the following steps:

[0052] (1) Put the powder column in the explosion container, and fill it with protective gas after vacuuming, so that the pressure in the explosion container is not higher than 1000Pa;

[0053] (2) Detonate the charge, react in the explosion container, collect the powder in the container after the product settles, sieve, wash, and obtain nano-graphite powder.

Embodiment 1

[0056] The present embodiment provides a kind of preparation method of nano-graphite powder, and described method comprises the following steps:

[0057] (1) charge column is placed in airtight explosion container, and the absolute pressure in the explosion container is 150Pa after vacuumizing, then fills with nitrogen as protective gas, makes the pressure in the explosion container be 400Pa;

[0058] (2) Ignite and detonate the powder column, a reaction occurs in the explosion container, and the waste gas is discharged after the product settles, the powder on the inner wall and bottom of the container is collected, and the large particle impurities are removed by sieving with a 100-mesh sieve. Wash to neutrality and dry to obtain nano-graphite powder.

[0059] The nano-graphite powder is characterized by a scanning electron microscope (SEM), and its SEM image is as follows figure 1 shown.

[0060] In this embodiment, by figure 1 It can be seen that the particle size of the...

Embodiment 2

[0062] The present embodiment provides a kind of preparation method of nano-graphite powder, and described method comprises the following steps:

[0063] (1) The charge column is placed in a closed explosion vessel, the absolute pressure in the explosion vessel is 100Pa after vacuuming, and then filled with argon as a protective gas, so that the pressure in the explosion vessel is 300Pa;

[0064] (2) Use a detonator to detonate the powder column, a reaction occurs in the explosion container, and the waste gas is discharged after the product settles, and the powder on the inner wall and bottom of the container is collected, and the large particle impurities are removed by sieving with a 150-mesh sieve. Wash with water until neutral, and obtain nano-graphite powder after drying.

[0065] In this embodiment, the particle size of the powder is small, mainly distributed in the range of 0.5-1 μm, and the median particle size is about 0.7 μm.

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Abstract

The intention provides a preparation method of nano-graphite powder and a method for preparing nano-graphite slurry from the nano-graphite powder, and the method comprises the following steps: placinga grain in an explosion container, vacuumizing, and then filling a protective gas, so that the pressure in the explosion container is not higher than 1000Pa; and detonating the grain, reacting in theexplosion container, settling the product, collecting the powder in the container, screening, and washing to obtain the nano-graphite powder. According to the method, the graphite powder is preparedthrough an explosion method, the particle size of the product is regulated and controlled by controlling the initial gas pressure through the uniqueness of reaction conditions of the explosion method,and the obtained product is narrow in particle size distribution range and good in uniformity; the prepared nano-graphite powder is suitable for preparation of the nano-graphite slurry due to the particle size characteristic, and the obtained nano-graphite slurry is uniform and stable; the method is simple in operation process and short in processing time, and the production efficiency can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a method for preparing nanographite powder and a method for preparing nanographite slurry. Background technique [0002] The carbon industry belongs to the basic raw material industry and is an indispensable basic material for economic development. Among them, nano-sized graphite material is a popular research material and has a wide range of applications, such as electronic information picture tubes, black conductive coatings in the display manufacturing industry, and catalysts, adsorbents, conductive agents and lubricants in the chemical industry. Wait. [0003] The production process of nano-graphite materials is generally more complicated, resulting in a higher price of nano-graphite, and due to the large specific surface area of ​​nano-graphite, it is easy to agglomerate and settle. The above factors will bring difficulties and challenges to the preparation a...

Claims

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Application Information

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IPC IPC(8): C01B32/205B82Y40/00C01B32/21
CPCC01B32/205B82Y40/00C01B32/21Y02E60/10
Inventor 娄明何斌冯晓彤张广明马洪伟张荻霍美婷刘洋
Owner 哈尔滨万鑫石墨谷科技有限公司
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