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Preparation method of bionic lamellar high-content CNT (carbon nano tube) polymer composite material

A carbon nanotube and composite material technology, which is applied in the field of biomimetic layered high-content carbon nanotube polymer composite material preparation, can solve problems such as reducing the reinforcing effect of carbon nanotubes, and achieves the effect of increasing the content and wide application prospect.

Active Publication Date: 2012-07-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the weight content of carbon nanotubes in these methods is less than 50%, which greatly reduces the reinforcing effect of carbon nanotubes

Method used

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  • Preparation method of bionic lamellar high-content CNT (carbon nano tube) polymer composite material
  • Preparation method of bionic lamellar high-content CNT (carbon nano tube) polymer composite material
  • Preparation method of bionic lamellar high-content CNT (carbon nano tube) polymer composite material

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Experimental program
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Effect test

Embodiment 1

[0025] Using the in-situ method, that is, the floating catalytic cracking method, the nano-iron catalyst is plated on the surface of a metal film, such as copper foil, and then methane is passed into the high-temperature reaction zone for 1 hour, and the flat single-walled carbon nanotube film is collected on the surface of the copper foil. The thickness of the film was measured as 200 μm by scanning electron microscopy, then immersed in 5% epoxy polymer acetone solution for 10 minutes, and ultrasonically vibrated for 10 minutes. The carbon nanotube film was taken out and placed in a vacuum oven at 80° C. for 20 minutes to remove acetone. Put the carbon nanotube film in a mold coated with a release agent, under the hot press, the pressure is 2KN, curing molding, curing process: 80 ° C / 2 hours, 120 ° C / 12 hours, you can get bionic layered carbon nanotube composites. The content of carbon nanotubes in the composite material was measured by a thermogravimetric analyzer, such...

Embodiment 2

[0027] Using the in-situ method, that is, the floating catalytic cracking method, the nano-iron catalyst is plated on the surface of a metal film, such as copper foil, and then ethylene is passed into the high-temperature reaction zone for 30 minutes, and the flat double-walled carbon nanotube film is collected on the surface of the copper foil, such as image 3 As shown, further characterized by laser Raman, the absorption vibration peak 188cm -1 , 1590cm -1 , confirming that the carbon nanotubes are double-walled carbon nanotubes, such as Figure 4 shown. The thickness of the film was measured as 100 μm by scanning electron microscope, then immersed in 3% epoxy polymer acetone solution for 10 minutes, and ultrasonically vibrated for 10 minutes. The carbon nanotube film was taken out and placed in a vacuum oven at 80° C. for 20 minutes to remove acetone. Put the carbon nanotube film in a mold coated with a release agent, under the hot press, the pressure is 2KN, curing mol...

Embodiment 3

[0029] The off-site method is adopted, that is, the ferrocene catalyst powder is first placed in a quartz boat, and then ethylene is passed into a high-temperature furnace for 30 minutes, and the powdery flat double-walled carbon nanotubes can be obtained. The carbon nanotube thin film can be obtained by ultrasonically dispersing the flat double-walled carbon nanotubes in acetone and vacuum filtering. A scanning electron microscope can be used to measure the thickness of the film to be about 100 μm, and then immersed in 1% bismaleimide polymer acetone solution for 10 minutes and ultrasonically vibrated for 10 minutes. The carbon nanotube film was taken out and placed in a vacuum oven at 80° C. for 20 minutes to remove acetone. Put the carbon nanotube film in a mold coated with a release agent, place it under a hot press, press 1.5KN, and cure it. The curing process: 80°C / 2 hours, 180°C / 8 hours, and the bionic layer can be obtained carbon nanotube composites. The weight conte...

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Abstract

The invention provides a preparation method of a bionic lamellar high-content CNT (carbon nano tube) polymer composite material. Under the inspiration of abalone shell in an organic-inorganic micro-nano multistate layer-by-layer assembled structure in the nature, the high-content CNT polymer composite material is composed by assembling flat CNT serving as an inorganic reinforcing material and high polymer serving as an organic toughening material orderly; and the bottleneck problem in preparation of CNT polymer composite material is broken through. The high-content CNT polymer composite material has a wide application prospect in the field of automobiles and medical appliances and the aerospace field.

Description

technical field [0001] The invention relates to a method for preparing a bionic layered high-content carbon nanotube polymer composite material, belonging to the field of nanocomposite material preparation. Background technique [0002] Carbon nanotubes (Carbon Nanotube, CNT) have ultra-high mechanical, electrical and thermal properties due to their unique geometric structure and electronic band structure. The tensile strength of the multi-walled carbon nanotubes is measured to be over 100GPa, the Young's modulus is over 1.0TPa, and the maximum elongation can reach 10-12%. In addition, the conductivity of carbon nanotubes is as high as 10 5 Scm -1 , 1000 times that of carbon fiber. The thermal conductivity of carbon nanotubes is as high as 3000Wm -1 K -1 , making it an excellent thermal conductor. The thermal stability of carbon nanotubes in air (basically not oxidized below 500°C in air) makes it an excellent flame retardant (Flame Retardant) material, so carbon nanot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/10
Inventor 程群峰江雷
Owner BEIHANG UNIV
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