Method for growing carbon nano tube in situ on surface of fiber

A fiber surface, in-situ growth technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of increasing process difficulty and investment cost, and achieve simple preparation and storage, and simple method Easy-to-do, easy-to-control effects

Inactive Publication Date: 2015-01-28
张映波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the treatment with strong acid, it will produce toxic waste gas
For this, specific facilities and equipment need to be introduced, which increases the process difficulty and investment cost

Method used

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  • Method for growing carbon nano tube in situ on surface of fiber
  • Method for growing carbon nano tube in situ on surface of fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Pretreatment

[0026] Put the carbon cloth into a mixture of 98% concentrated sulfuric acid and 30% (mass / volume) hydrogen peroxide (concentrated sulfuric acid:hydrogen peroxide=3:1), treat for 30min, take it out and wash it in distilled water at least three times , and dried at 80°C for two hours. From figure 1 It can be seen that the surface of the unpretreated carbon fiber is very flat, while the surface of the pretreated carbon fiber has many grooves.

[0027] 2) Preparation of catalyst

[0028] Fe(NO 3 ) 3 9H 2 O was dissolved in ethanol to prepare 100 mM Fe(NO 3 ) 3 solution; then put the carbon cloth pretreated in step 1) into the solution and soak for 2h. Arrange the treated carbon in a quartz tube, and heat it under an inert gas atmosphere; when the temperature rises to 700°C, it is kept for half an hour, and 200 sccm hydrogen gas is introduced.

[0029] 3) Growth of carbon nanotubes on the surface of carbon fibers

[0030] Keep the temperature at ...

Embodiment 2

[0033] 1) Pretreatment

[0034] Put the carbon cloth into a mixture of 98% concentrated sulfuric acid and 30% (mass / volume) hydrogen peroxide (concentrated sulfuric acid:hydrogen peroxide=3:1), treat for 30min, take it out and wash it in distilled water at least three times , and dried at 80°C for two hours.

[0035] 2) Preparation of catalyst

[0036] With 2M Ni(NO 3 ) 2 The solution and ethylene glycol methyl ether were used to prepare a sol, and an appropriate amount of ammonia water was added, stirred at a high speed for 6 hours, and then sealed and left to stand for 10 hours to obtain a transparent sol. The sol was uniformly coated on the surface of the pretreated fiber by dipping and pulling method, and the pulling speed was 8 cm / min. After the wet film was heat-treated at 100°C, it was dipped and pulled repeatedly, and the number of times of pulling was 3 times. The fiber coated with the Ni-containing sol was placed in the chamber of the chemical vapor deposition s...

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Abstract

The invention provides a method for growing carbon nano tubes in situ on the surface of fiber. The method comprises the following steps: (1) pretreating the fiber, namely, treating the surface of the fiber by using a mixed liquid of concentrated sulfuric acid and hydrogen peroxide; (2) growing a catalyst in situ on the surface of the fiber; and (3) growing the carbon nano tubes on the surface of the fiber. As the fiber is pretreated by using the mixed liquid of concentrated sulfuric acid and hydrogen peroxide, the fiber surface which is relatively rough is provided, and the adhesion of the catalyst for preparing the carbon nano tubes is facilitated. Moreover, as the catalyst is uniformly adhered to the surface of the fiber by using a dipping method or a sol-gel method, the growth of the carbon nano tubes is facilitated. The dipping method or the sol-gel method is simple and feasible, easy to control, low in cost and beneficial for on-scale and in-batch production.

Description

technical field [0001] The invention relates to the field of preparation of carbon nanotubes, in particular to a method for in-situ growth of carbon nanotubes on fibers. Background technique [0002] Carbon nanotubes have been proposed to be useful in many applications due to their large effective surface area, mechanical strength, and thermal and electrical conductivity. Many of these applications are particularly well suited for carbon nanotubes grown on fibrous substrates. When grown on a fibrous substrate, the properties of the fibrous substrate can be enhanced by carbon nanotubes. For example, when carbon nanotubes are grown thereon, the mechanical strength of the fiber substrate can be enhanced, and the fiber substrate can be made conductive. At present, the preparation methods of carbon nanotubes mainly include arc discharge method, chemical vapor deposition method and other methods. Among them, the chemical vapor deposition method is the most widely used preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00
Inventor 张映波杨华
Owner 张映波
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