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Carbon nanotube preparation device, injection assembly thereof and carbon nanotube preparation method

A technology of carbon nanotubes and injection components, which is applied in textiles, papermaking, fiber chemical characteristics, etc., can solve the problems of high yield and inability to obtain at the same time, and achieve the effects of increasing yield, avoiding local precipitation, and increasing concentration

Active Publication Date: 2022-07-29
江西省纳米技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the above-mentioned solutions in the prior art, no matter how the ratio of raw materials and process parameters are adjusted, a large yield and a stable preparation process cannot be obtained at the same time.

Method used

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  • Carbon nanotube preparation device, injection assembly thereof and carbon nanotube preparation method
  • Carbon nanotube preparation device, injection assembly thereof and carbon nanotube preparation method
  • Carbon nanotube preparation device, injection assembly thereof and carbon nanotube preparation method

Examples

Experimental program
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preparation example Construction

[0056] The embodiment of the present invention also provides an efficient preparation method of carbon nanotubes, which is applied to the above-mentioned efficient preparation device, and includes the following steps:

[0057] The temperature of the middle section of the reaction furnace tube 13 is controlled to reach the process temperature, and the process gas is introduced into the reaction furnace tube 13 .

[0058] The catalyst originates from the sublimation tank and is sublimated into a gaseous state, and is carried by the carrier gas through the first raw material passage 8 into the reaction furnace tube 13 .

[0059] The carbon source is introduced into the reaction furnace tube 13 through the second raw material passage.

[0060] The carbon source and the catalytic source generate carbon nanotube precursors 15 in the reaction furnace tube 13 and output the carbon nanotube precursors 15 at the second end of the reaction furnace tube 13 , and the carbon nanotube precur...

Embodiment 1

[0070] This example provides a specific preparation example of carbon nanotube fibers, and the process is as follows:

[0071] This example uses figure 1The carbon nanotube preparation system shown, wherein, the sublimation tank includes a stainless steel shell 1, a raw material tube 2 of quartz is arranged in it, the outer circumference of the raw material tube 2 is covered with a heating jacket 3 with a copper main body, the above-mentioned raw material tube 2 and heating jacket 3 3 are placed on the support table 4, and the support table 4 is fixed on the sealing flange 5; the reaction furnace tube 13 is a corundum tube, its inner diameter is 100mm, and the length is 1350mm;

[0072] The outlet of the sublimation tank is connected to the first raw material passage 8. The first raw material passage 8 extends all the way through the injection flange 12 sealed at the first end of the reaction furnace tube 13, and then continues to extend into the reaction furnace tube 13 for a...

Embodiment 2

[0078] This example provides a specific example of the preparation process of carbon nanotube fibers, which is basically similar to Example 1, and the only difference is:

[0079] The temperature of the heating jacket 3 is regulated to 250°C.

[0080] The prepared carbon nanotube fiber 21 has a yield of 3 g / h and a continuity of 1000 m.

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Abstract

The invention discloses a carbon nanotube preparation device, an injection assembly thereof and a method for preparing a carbon nanotube. The reaction furnace tube is used for providing a growth environment for the carbon nano tube and comprises a first end, a middle section and a second end; the injection assembly is hermetically connected to the first end; the temperature control assembly is arranged at the periphery of the reaction furnace tube and is used for at least controlling the process temperature of the middle section of the reaction furnace tube; the injection assembly comprises an injection flange hermetically connected to the first end, a first raw material passage and a second raw material passage which penetrate through the injection flange, and a sublimation tank; the sublimation tank is communicated with the first raw material passage and is used for accommodating and sublimating the catalytic source to enable the gaseous catalytic source to enter the reaction furnace tube through the first raw material passage, and the second raw material passage is used for at least injecting a carbon source into the reaction furnace tube. According to the preparation device, the assembly and the method provided by the invention, the preparation yield of the carbon nanotubes and the stability of the preparation process are greatly improved.

Description

technical field [0001] The invention relates to the technical field of inorganic carbon materials, in particular to a carbon nanotube preparation device, an injection component thereof and a carbon nanotube preparation method. Background technique [0002] Carbon nanotubes have excellent physical and chemical properties. Assembling carbon nanotubes into macroscopic bodies, such as fibers, is one of the important ways to realize the macro application of carbon nanotubes, which is of great significance to the national economy, national defense, aerospace and other fields. [0003] The preparation methods of carbon nanotube fibers mainly include wet spinning, array spinning and floating catalytic direct spinning. Among them, floating catalytic carbon nanotube fibers have the advantages of high mechanical properties, easy large-scale continuous preparation, etc., and are considered to be the most potential and promising carbon nanotube fiber preparation methods. [0004] The fa...

Claims

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Application Information

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IPC IPC(8): D01F9/133D01F9/127
CPCD01F9/133D01F9/1277Y02E60/10
Inventor 勇振中万子尧张永毅吴昆杰周涛詹祥和李清文
Owner 江西省纳米技术研究院