Preparation method of carbon nano tube/polyaniline nano composite conductive powder

A carbon nanotube and nanocomposite technology, applied in non-metallic conductors, organic material conductors, etc., can solve the problems of long preparation process, unfavorable large-scale production, increased difficulty and cost, etc., and achieves low production cost and high yield. , the effect of shortening the preparation time

Active Publication Date: 2011-07-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this preparation method has weak point, at first, the consumption of emulsifier dodecylbenzene sulfonic acid as one of raw material is bigger, reaches 10-3 mole, and the price of this raw material is expensive, up to 600 yuan/ kg, which makes it difficult to reduce the cost of preparation; secondly, the reaction temperature is relatively low and needs to be reacted at 0°C, which inc

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  • Preparation method of carbon nano tube/polyaniline nano composite conductive powder
  • Preparation method of carbon nano tube/polyaniline nano composite conductive powder
  • Preparation method of carbon nano tube/polyaniline nano composite conductive powder

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Embodiment 1

[0021] The specific steps of preparation are:

[0022] In step 1, carbon nanotubes, aniline and protonic acid are first mixed in a weight ratio of 2.3:23:1 and then stirred for 15 min to obtain a mixed solution; wherein the protonic acid is hydrochloric acid, and the concentration of the solution is 0.5M. After the mixed solution was placed in ultrasonic wave and homogenized for 10min, a co-stabilizer was added to it and stirred for 15min to obtain an oil phase liquid; wherein, the weight ratio between the aniline in the oil phase liquid and the co-stabilizer was 23:1, and the co-stabilizer was 23:1. The stabilizer is hexadecane. Next, first mix the emulsifier and water in a weight ratio of 0.8:430 and then stir for 15 min to obtain an aqueous phase liquid; then mix the oil phase liquid with the aqueous phase liquid and stir for 15 min, and then place it in an ultrasonic wave for homogenization. The mixture was heated for 10 min to obtain a mini-emulsion; wherein, the weight ...

Embodiment 2

[0026] The specific steps of preparation are:

[0027] In step 1, carbon nanotubes, aniline and protonic acid are first mixed in a weight ratio of 2.4:24:1 and then stirred for 16 min to obtain a mixed solution; wherein the protonic acid is hydrochloric acid, and the concentration of the solution is 0.8M. After the mixed solution was placed in the ultrasonic wave and homogenized for 11 min, a co-stabilizer was added to it and stirred for 16 min to obtain an oil phase liquid; wherein, the weight ratio between the aniline and the co-stabilizer in the oil phase liquid was 24:1, and the co-stabilizer was 24:1. The stabilizer is hexadecane. Next, first mix the emulsifier and water in a weight ratio of 0.9:440 and then stir for 16 minutes to obtain an aqueous phase liquid; then mix the oil phase liquid with the aqueous phase liquid and stir for 16 minutes, and then place it in an ultrasonic wave for homogenization 11 min to obtain a mini-emulsion; wherein, the weight ratio between ...

Embodiment 3

[0031] The specific steps of preparation are:

[0032] In step 1, carbon nanotubes, aniline and protonic acid are first mixed in a weight ratio of 2.5:25:1 and stirred for 17 minutes to obtain a mixed solution; wherein the protonic acid is hydrochloric acid, and the concentration of the solution is 1M. After the mixed solution was placed in the ultrasonic wave for homogenization for 12min, a co-stabilizer was added thereto and stirred for 17min to obtain an oil phase liquid; wherein, the weight ratio between the aniline in the oil phase liquid and the co-stabilizer was 25:1, and the co-stabilizer was 25:1. The stabilizer is hexadecane. Next, first mix the emulsifier and water in a weight ratio of 1:450 and then stir for 17 minutes to obtain an aqueous phase liquid; then mix the oil phase liquid with the aqueous phase liquid and stir for 17 minutes, and then place it in an ultrasonic wave for homogenization 12 min to obtain a mini-emulsion; wherein, the weight ratio between th...

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Abstract

The invention discloses a preparation method of carbon nano tube/polyaniline nano composite conductive powder. The method comprises the following steps: mixing a carbon nano tube, aniline and protonic acid, and adding an assistant stabilizing agent into the mixture to obtain an oil phase solution; mixing an emulsifier with water to obtain an aqueous phase solution; mixing the oil phase solution and the water phase solution and then carrying out homogenization on the mixture in ultrasonic wave to obtain a miniemulsion; adding the protonic acid solution into the miniemulsion and then stirring to obtain a doping solution; dropwise adding an oxidant aqueous solution into the doping solution and carrying out a reaction for at least 4 hours to obtain the reaction solution; and finally carrying out centrifugalization to obtain a precipitate, washing the precipitate with ethanol and water, and drying the precipitate after washing to obtain carbon nano tube/polyaniline nano composite conductive powder, wherein the core is the carbon nano tube and a shell is polyaniline, and the thickness of polyaniline is 10-30nm. The product prepared by the method can be used as a conductive material or an enhanced filling material to be added into the polymer matrix, so as to prepare the new materials for light-to-electricity conversion, photoelectrocatalysis and electromagnetic shielding and the like.

Description

technical field [0001] The invention relates to a preparation method of composite conductive powder, in particular to a preparation method of carbon nanotube / polyaniline nanocomposite conductive powder. Background technique [0002] Since the excellent electrochemical properties of carbon nanotubes were discovered, they have acted as filler materials, which greatly improved the electrical conductivity, mechanical properties and stability of composite materials. The many excellent properties of carbon nanotubes make them play various roles in composite materials: super mechanical properties can greatly improve the strength and toughness of composite materials; unique electrical and photoelectric properties can improve the electrical conductivity of polymer materials And the preparation of new photoelectric polymer composites; its unique structure can prepare one-dimensional nanocomposites filled with metal or metal oxides. However, there is a strong van der Waals force betwe...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08K7/00C08K3/04H01B1/12
Inventor 王化王若溪王磊田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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