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Preparation method of carbon nano tube composite material with high-content uniformly dispersed carbon nano tubes

A carbon nanotube and composite material technology, which is applied to the preparation field of carbon nanotube composite materials, can solve the problems of uneven dispersion, disorderly arrangement, low volume content of carbon tubes, etc., and achieves broad application prospects, simple process and controllable production. Effect

Inactive Publication Date: 2012-08-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The volume content of carbon tubes in the carbon tube composites prepared by these blending methods is low, the dispersion is uneven, the arrangement is disorderly, and the reinforcing effect of carbon nanotubes is not fully reflected. The mechanical and electrical properties of the obtained composite materials are not ideal.

Method used

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  • Preparation method of carbon nano tube composite material with high-content uniformly dispersed carbon nano tubes
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  • Preparation method of carbon nano tube composite material with high-content uniformly dispersed carbon nano tubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of carbon nanotubes / polyvinyl alcohol composites with uniform dispersion of carbon nanotubes:

[0034] (1) Selecting a diameter of 20 nanometers and multi-walled carbon nanotubes with a length of 50-100 microns as the carbon nanotube material, the carbon nanotube material is added to the volatile solvent alcohol, and the dispersant sodium dodecylsulfonate is added (SDS), wherein, the ratio of carbon nanotubes, volatile solvent and dispersant is 1mg: 2mL: 0.5mg; under the condition of ultrasonic oscillation with a frequency of 53KHz, the oscillation time is 4 hours, and the carbon nanotubes in the volatile solvent evenly dispersed.

[0035] (2) 1 g of polymer PVA was dissolved in 1 L of ethanol solution with a concentration of 90 vol % to prepare a polymer solution.

[0036] (3) if Figure 1a with Figure 1b As shown, the winding roller made of polytetrafluoroethylene is connected to the speed control motor, a layer of polyester film is laid on the winding ...

Embodiment 2

[0039] Preparation of carbon nanotube composites with carbon nanotubes and polymer uniformly mixed layer and polymer layer spaced in the horizontal direction:

[0040] (1) choose diameter to be 20 nanometers, the multi-walled carbon nanotube of length 50-100 micron is carbon nanotube material, carbon nanotube material is joined in the volatile solvent alcohol solution, adds dispersant dodecyl sulfonic acid Sodium (SDS), wherein the ratio of carbon nanotubes, volatile solvent and dispersant is 1mg: 2mL: 0.5mg; oscillating for 4 hours under the condition of ultrasonic oscillation with a frequency of 53KHz, to realize the uniformity of carbon nanotubes in the volatile solvent dispersion.

[0041] (2) 1 g of polymer PVA was dissolved in 1 L of ethanol solution with a concentration of 90 vol % to prepare a polymer solution.

[0042] (3) if Figure 2a As shown, the winding roller made of polytetrafluoroethylene is connected to the speed control motor, a layer of polyester film is ...

Embodiment 3

[0045] Preparation of carbon nanotube composites in which carbon nanotubes and polymers are uniformly mixed and distributed in the thickness direction:

[0046] (1) Select the multi-walled carbon nanotubes with a diameter of 20 nanometers and a length of 50-100 microns as the carbon nanotube material, add the carbon nanotube material to the volatile solvent alcohol solution, and add the dispersant SDS, wherein the carbon nanotube The ratio of the tube, the volatile solvent and the dispersant is 1mg: 2mL: 0.5mg; under the condition of ultrasonic oscillation with a frequency of 53KHz, the oscillation time is 4 hours to realize the uniform dispersion of the carbon nanotubes in the volatile solvent.

[0047] (2) 1 g of polymer PVA was dissolved in 1 L of ethanol solution with a concentration of 90 vol % to prepare a polymer solution.

[0048] (3) if Figure 1a and Figure 1b As shown, the winding roller made of polytetrafluoroethylene is connected to the speed control motor, a la...

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Abstract

The invention relates to a preparation method of a carbon nano tube composite material. The preparation method is characterized by comprising specific steps as follows: adding carbon nano tubes in a first volatile solvent; adding a dispersing agent; uniformly dispersing the carbon nano tubes in a volatile solvent to obtain a dispersed carbon nano tube solution; dissolving a polymer in a second volatile solvent to obtain a polymer solution; connecting a wind-up roll with a speed control motor; spraying the dispersed carbon nano tube solution on the rotating wind-up roll at one side of the wind-up roll by using a spray gun; spraying the polymer solution on the wind-up roll at the other side of the wind-up roll by using the spray gun; turning on a heating device which is close to the wind-uproll so that the first volatile solvent and the second volatile solvent are volatilized; and continuously spraying, winding and volatilizing, so that the carbon nano tube composite material consisting of carbon nano tubes and the polymer is formed on the wind-up roll. The preparation method provided by the invention is simple and easy to operate, and is convenient to control.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube composite material with high carbon tube content and uniform dispersion. Background technique [0002] Compared with metal materials and inorganic materials, polymer materials have disadvantages such as poor mechanical properties, poor electrical conductivity, and low operating temperature. It can be seen from the reports of fiber or nanopowder reinforced polymer materials that the mechanical properties, electrical conductivity and service temperature of polymer materials have been improved. The tensile strength of carbon nanotubes can reach 63GPa, which is dozens of times that of carbon fibers, and is known as "super fiber". Compared with traditional fiber materials, carbon nanotubes have the advantages of small scale, large specific surface area, high aspect ratio, and strong mechanical properties; compared with other nanopowders, they have high aspect ratio, strong mechanical proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L63/00C08L75/04C08K3/04
Inventor 许福军朱文斌刘玮邱夷平
Owner DONGHUA UNIV
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