Preparation method for carbon fiber material with composite nano structure

A technology of composite nanostructure and carbon fiber materials, which is applied in the directions of carbon fiber, fiber processing, textiles and papermaking, etc., can solve the problems of weak bonding, carbon fiber detachment, and unsatisfactory carbon nanotube dispersion, and achieve the effect of tight bonding

Inactive Publication Date: 2013-05-08
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method of preparing carbon fiber / carbon nanotube composite materials are: (1) the dispersion of carbon nanotubes is not ideal, and it is difficult to form monodisperse, so the excellent properties of carbon nanotubes themselves cannot be reflected after compounding; (2) carbon nanotubes Nanotubes are first grown and then recombined, not grown on carbon fibers in situ, so the combination of the two is relatively weak, so the composited carbon nanotubes are easy to separate from the carbon fibers
[0006] In order to overcome the shortcomings of the existing two-step method for preparing carbon fiber / carbon nanotube composite materials, the invention provides a method for preparing composite nanostructured carbon fiber materials by in-situ growth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a. Pretreatment of carbon fiber cloth: put 100×100mm biaxial carbon fiber cloth into a sodium carbonate solution with a concentration of 30g / L, heat it through an electric furnace until the solution temperature is 60°C, and ultrasonically assist cleaning for 30 minutes. Wash it twice with deionized water, then put the carbon fiber cloth into the acetone solution, and ultrasonically assist cleaning for 20 minutes, then put the carbon fiber cloth into a tube furnace with openings at both ends in the air atmosphere, heat treatment at 400°C for 30 minute;

[0020] b. By liquid phase method, put the pretreated carbon fiber cloth into FeCl with a concentration of 0.4 mol / L 3 Immerse in the solution to obtain a layer of Fe catalyst attached to the carbon fiber cloth, then pass clean air into the chemical vapor deposition chamber, heat-treat the Fe catalyst attached to the carbon fiber cloth at a temperature of 450°C for 15 minutes, then raise the temperature to 650°C, and pass...

Embodiment 2

[0024] a. Pretreatment of carbon fiber cloth: put a 120×120mm triaxial carbon fiber cloth into a sodium carbonate solution with a concentration of 20g / L, heat it through an electric furnace until the solution temperature is 60°C, and ultrasonically assist cleaning for 30 minutes. Wash it twice with deionized water; then put the carbon fiber cloth into the acetone solution, and ultrasonically assist cleaning for 20 minutes, then put the carbon fiber cloth into a tube furnace with openings at both ends in the air atmosphere, heat treatment at 400°C for 30 minute;

[0025] b. By physical vapor deposition method, using Fe with a purity of 99.99% as the target material, the carbon fiber cloth is deposited by thermal evaporation. The thickness of the Fe film attached to the carbon fiber cloth is 5nm, and the carbon fiber cloth with the Fe catalyst attached is directly Send it into the chemical vapor deposition chamber, raise the temperature to 680°C at a heating rate of 50°C / min, a...

Embodiment 3

[0029]a. Pretreatment of carbon fiber cloth: put 100×100 mm biaxial carbon fiber cloth into a sodium carbonate solution with a concentration of 40g / L, the temperature of the solution is 60°C, ultrasonic cleaning for 30 minutes, and deionized water After cleaning twice, put the carbon fiber cloth into the acetone solution, ultrasonically assist cleaning for 20 minutes, and then put the carbon fiber cloth into the tube furnace with openings at both ends in the air atmosphere, heat treatment at 400°C for 30 minutes;

[0030] b. Through the physical vapor deposition method, using Fe with a purity of 99.99% as the target material, the carbon fiber cloth is deposited by magnetron sputtering. The thickness of the Fe film attached to the carbon fiber cloth is 0.5 nm, and the carbon fiber cloth with the Fe catalyst attached is The cloth is directly sent into the chemical vapor deposition chamber, and the temperature is raised to 600°C at a heating rate of 50°C / min, and then hydrogen gas...

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Abstract

The invention relates to a preparation method for a carbon fiber material with a composite nano structure. The preparation method comprises the following steps of: pretreating carbon fiber cloth, adhering a layer of thin iron film catalyst on the carbon fiber cloth by a liquid-phase method or a physical deposition method, in a chemical gas-phase reaction chamber, carrying out in-situ growth of carbon nanotubes on the carbon fiber cloth by using argon or nitrogen as a carrier gas, ethylene or acetylene gas as a carbon source gas, and hydrogen as a reducing gas, then carrying a gas containing titanium organism into the chemical gas-phase deposition reaction chamber through the carrier gas, growing titanium dioxide at the peripheries of the carbon nanotubes to form titanium dioxide nanoshells which wrap the carbon nanotubes, thus obtaining the carbon fiber material with the composite nano structure. The carbon fiber material obtained by the preparation method has the advantages of high mechanical strength, high thermal stability, good chemical inertness and high adsorption property, supernormal strength of carbon nanotubes, large length-diameter ratio, high thermal conductivity, good catalytic activity, high chemical stability, non-toxicity and super-hydrophilicity. The carbon fiber material with the composite nano structure can have important applications in photocatalysis, electrocatalysis and other aspects.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a composite nanostructure carbon fiber material. Background technique [0002] Carbon fiber is a microcrystalline graphite material obtained by carbonizing and graphitizing organic fibers. Carbon fiber has excellent mechanical properties, its specific gravity is less than 1 / 4 of steel, the tensile strength of carbon fiber resin composite is 7-9 times that of steel, and the tensile modulus of elasticity is also higher than that of steel. Carbon fiber also has unique chemical properties. It is an inorganic polymer fiber with a carbon content higher than 90%. It has good fatigue resistance, specific heat and electrical conductivity between non-metal and metal, small thermal expansion coefficient, and corrosion resistance. Well, the density of the fiber is low, the X-ray permeability is good, and the chemical stability is strong. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/00D06M11/74D06M11/46D06M101/40
Inventor 刘向阳卞卫国田长彦
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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