Carbon nanotube/polyaniline composite material and preparation method thereof

A carbon nanotube and composite material technology, which is applied in the field of carbon nanotube/polyaniline composite material and its preparation, can solve the problems of carbon nanotube damage, affecting the electrical, thermal and mechanical properties of carbon nanotubes, so as to ensure electrical conductivity. , The preparation process is simple, the effect of ensuring the structure and performance

Inactive Publication Date: 2019-12-13
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The use of ball milling or high-speed stirring, the use of chemical methods to treat the surface of carbon nanotubes, or the covalent functional modification of carbon nanotubes will cause damage to the structure of carbon nanotubes to a certain extent, thereby affecting the superior electrical and thermal properties of carbon nanotubes. and mechanical properties

Method used

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  • Carbon nanotube/polyaniline composite material and preparation method thereof
  • Carbon nanotube/polyaniline composite material and preparation method thereof
  • Carbon nanotube/polyaniline composite material and preparation method thereof

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preparation example Construction

[0031] The invention provides a kind of preparation method of carbon nanotube / polyaniline composite material, comprises the following steps:

[0032] Dispersing the carbon nanotubes in an organic solvent to obtain a carbon nanotube dispersion;

[0033] A polyaniline solution is added to the carbon nanotube dispersion liquid, and a carbon nanotube / polyaniline composite material is obtained after solid-liquid separation.

[0034] In the present invention, unless otherwise specified, the raw materials used are commercially available products well known in the art.

[0035] The invention disperses the carbon nanotube into the organic solvent to obtain the carbon nanotube dispersion liquid. In the present invention, the carbon nanotubes preferably include single-wall carbon nanotubes and / or multi-wall carbon nanotubes. The present invention has no special requirements on the size specification of the carbon nanotubes, and carbon nanotubes of any size specification are acceptable....

Embodiment 1

[0049] Weigh 0.4g of benzenesulfonic acid and dissolve it in 40mL of 1,3-dimethyl-2-imidazolidinone, add 40mg of single-walled carbon nanotubes after complete dissolution, stir at room temperature at a speed of 300r / min while ultrasonicating for 30min, A dispersion of single-walled carbon nanotubes was obtained. Then, weigh 40 mg of intrinsic state polyaniline (the corresponding monomer is aniline) and dissolve it in 100 mL of 1,3-dimethyl-2-imidazolidinone. In the dispersion liquid, and continue to ultrasonic and stir for 30min, so that the single-walled carbon nanotubes are uniformly dispersed again after adding polyaniline. After the ultrasound is completed, the carbon nanotube / polyaniline composite material with a mass ratio of single-walled carbon nanotubes and polyaniline of 1:1 can be obtained by suction filtration and washing, which is denoted as (1SWCNT-BSA)@1PANI.

Embodiment 2

[0051] Weigh 0.4g of benzenesulfonic acid and dissolve it in 40mL of 1,3-dimethyl-2-imidazolidinone, add 40mg of single-walled carbon nanotubes after complete dissolution, stir at room temperature at a speed of 300r / min while ultrasonicating for 30min, A dispersion of single-walled carbon nanotubes was obtained. Then, take 8 mg of intrinsic state polyaniline (same as Example 1) and dissolve it in 20 mL of 1,3-dimethyl-2-imidazolidinone. After completely dissolving, add dropwise at a uniform speed to the dispersion of single-walled carbon nanotubes. solution, and continued ultrasonication and stirring for 30 min, so that the single-walled carbon nanotubes were uniformly dispersed again after adding polyaniline. After the ultrasound is completed, the carbon nanotube / polyaniline composite material with a mass ratio of single-walled carbon nanotubes and polyaniline of 5:1 can be obtained by suction filtration and washing, which is denoted as (5SWCNT-BSA)@1PANI.

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Abstract

The invention relates to the technical field of composite materials, and in particular relates to a carbon nanotube/polyaniline composite material and a preparation method thereof. The invention provides the preparation method of the carbon nanotube/polyaniline composite material, and the method comprises the following steps: dispersing carbon nanotubes in an organic solvent to obtain a carbon nanotube dispersion liquid; and adding a polyaniline solution into the carbon nanotube dispersion liquid, and carrying out solid-liquid separation to obtain the carbon nanotube/polyaniline composite material. According to the invention, pi electrons in the polyaniline conjugated structure and large pi bonds in the carbon nanotubes form the composite material through pi-pi interaction, so the agglomeration force between carbon materials is destroyed, the dispersibility of the carbon nanotubes is improved, and the stability of the structure and performances of the carbon nanotubes is guaranteed.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a carbon nanotube / polyaniline composite material and a preparation method thereof. Background technique [0002] Carbon nanotubes are light in weight and low in density. They have good mechanical properties, electrochemical properties and thermal properties. They are ideal reinforcing materials. They are often combined with polymers to prepare composite materials. They are widely used in aerospace, sports equipment, and transportation. , printing, energy and other fields. However, carbon nanotubes are easy to agglomerate and difficult to disperse in water, organic solvents and polymer matrices, and their surface inertness also seriously affects their interfacial compatibility in polymer matrices, thereby affecting the performance of composite materials. Therefore, the mild and effective dispersion of carbon nanotubes and the preparation of high-performance carbon nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/215C08L79/02C08K3/04
CPCC08J3/215C08J2379/02C08K3/041C08K2201/011
Inventor 白冰章自寿麦堪成杨康张扬帆刘秀李富镇李安琪
Owner SUN YAT SEN UNIV
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