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Preparation method for carbon nanotube antistatic material easy to disperse

A carbon nanotube and antistatic technology is applied in the field of preparation of carbon nanotube antistatic materials, and achieves the effects of easy availability of raw materials, easy control of process conditions and simple preparation process

Inactive Publication Date: 2015-11-04
JUNJIANG SCI & TECH CO LTD SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is no ideal method for synthesizing carbon nanotubes in large quantities so far.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 200ml of a solution containing 0.01mol of ferric nitrate is uniformly coated on the surface of 1000g of calcium carbonate particles with a particle diameter of 15-100um under the condition of pH=9-11. The microparticles wrapped with the iron catalyst are activated in a reducing atmosphere at 300°C, the gas component is a mixture of hydrogen and carbon monoxide, the volume percentage of hydrogen is 10%, and the volume percentage of carbon monoxide is 90%. Send the catalyst particles loaded with activation into the reactor with a volume percentage ratio of alkanes:alkenes:hydrogen:carbon monoxide=10:20:30:40 (methane is used for alkanes, propylene is used for olefins), and the reaction conditions are 950°C and residence time 200min Under the following conditions, carbon nanotubes (CNTs) with directional growth and controllable aspect ratio (with an aspect ratio of 200-300) can be prepared.

[0044] Treat the particles with carbon nanotubes growing on the surface with a 1:...

Embodiment 2

[0047] 1000ml of a solution containing 1.00mol of ferric nitrate is uniformly coated on the surface of 1000g of magnesium oxide particles with a particle diameter of 15-100um under the condition of pH=9-11. The microparticles wrapped with iron catalyst are activated in a reducing atmosphere at 500°C. The gas component is a mixture of hydrogen and carbon monoxide, the volume percentage of hydrogen is 90%, and the volume percentage of carbon monoxide is 10%. Send the activated catalyst particles into the reactor with the volume percentage ratio of alkanes:alkenes:hydrogen:carbon monoxide=20:40:40:0 (butane is used for alkanes, ethylene is used for olefins), and the reaction is carried out at 500°C and the residence time is 1min Under these conditions, carbon nanotubes (CNTs) with directional growth and controllable aspect ratio (with an aspect ratio of 400-500) can be prepared.

[0048] Treat the particles with carbon nanotubes growing on the surface with a 1:1 (volume ratio) so...

Embodiment 3

[0051] 500ml of a solution containing 0.12mol of cobalt nitrate is uniformly coated on the surface of 1000g of calcium oxide particles with a particle size of 15-100um under the condition of pH=9-11. The microparticles wrapped with cobalt catalyst are put into a reducing atmosphere at 420°C for activation. The gas component is a mixture of hydrogen and carbon monoxide gas, the volume percentage of hydrogen is 30%, and the volume percentage of carbon monoxide is 70%. Send the catalyst particles loaded with activation into the reactor with the volume percentage ratio of alkanes:alkenes:hydrogen:carbon monoxide=10:30:30:30 (alkanes use ethane, olefins use ethylene), and react at 805°C with a residence time of 30 minutes Under the above conditions, carbon nanotubes (CNTs) with directional growth and controllable aspect ratio (the aspect ratio is 300-400) can be prepared.

[0052] Treat the particles with carbon nanotubes grown on the surface with a 1:1 (volume ratio) solution of h...

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Abstract

The invention relates to a preparation method for carbon nanotube antistatic material easy to disperse. First, acid-soluble inorganic powder is selected, an iron or cobalt or nickel catalyst is evenly loaded on the surface of the inorganic powder, and the loading capacity of iron or cobalt or nickel is controlled; then, the load catalyst is placed into reducing atmosphere of 300 DEG C-500 DEG C to be activated, then the activated catalyst is conveyed into a reactor containing alkane, olefin, hydrogen and carbon monoxide, and at 500 DEG C-900 DEG C, carbon nanotubes (CNTs) which have oriented growth and are controllable in length-diameter ratio are prepared; finally, by the adoption of acid dissolution carriers, the carbon nanotube antistatic material easy to disperse is obtained, wherein the content of the carbon nanotubes in the carbon nanotube antistatic material is high. When the addition quantity of CNTs in epoxy resin reaches 10<-4> level, a high-transparency and stable-resistance (106-108 omega) film can be obtained, and the film has excellent antistatic performance characteristics and product economy advantages.

Description

technical field [0001] The invention relates to a preparation method of an easily dispersed carbon nanotube antistatic material. In the present invention, the iron group catalyst is coated on the surface of the carrier, and the carbon nanotubes are oriented to grow, and then the carrier is dissolved to obtain a pure carbon nanotube antistatic material that is easy to disperse. The prepared carbon nanotubes have excellent antistatic performance and wide industrial application prospects. Background technique [0002] Carbon nanotubes are tubes formed by winding a single layer of graphite atoms coaxially or by nesting layers of single-layer graphite cylinders along the coaxial layer. Its diameter is generally between one and tens of nanometers, and its length is much larger than its diameter. [0003] As a one-dimensional nanomaterial, carbon nanotubes are light in weight, and carbon atoms are connected to each other to form a hexagonal structure, which has many abnormal mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y40/00C09D163/00C09D5/24
Inventor 孙君同曹卫宇周兴贵
Owner JUNJIANG SCI & TECH CO LTD SHANGHAI
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