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Method for preparing polyaniline/silver nanocomposite material

A composite material, silver nanotechnology, applied in the direction of electrolytic capacitors, electrical components, circuits, etc., to achieve the effect of solving dispersion problems, complementary advantages and strengthening, and simple production process

Inactive Publication Date: 2010-09-22
CENT SOUTH UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, researchers have achieved fruitful results in the preparation of nano-silver particles and polyaniline microemulsions, and polyaniline / silver nanocomposites are a new high-performance composite material with a variety of special functions. The research of this preparation method is just in the ascendant, at present, adopt the means of microemulsion, trigger the in-situ polymerization of aniline in nano-silver particle microemulsion to prepare the train of thought and method of polyaniline / silver nanocomposite material and have not been reported in the literature

Method used

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  • Method for preparing polyaniline/silver nanocomposite material
  • Method for preparing polyaniline/silver nanocomposite material
  • Method for preparing polyaniline/silver nanocomposite material

Examples

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Embodiment 1

[0034] a. Weigh 0.305g of SDS and 0.459g of co-emulsifier n-hexanol into a beaker and add 60ml of distilled water for ultrasonic dispersion for 5 minutes. After the SDS is completely dissolved, stir for 5 minutes to make a clear and transparent microemulsion for use.

[0035]b. Take 45ml of microemulsion, and add 5mL of hydrogen peroxide with a mass fraction of 30% in a beaker to make a reducing solution, add 5ml of silver ammonia microemulsion (1M / L) dropwise to the reducing solution at a rate of 10-15 drops / min Prepare nano-silver particles in the experiment process, keep stirring, and the reaction time is 90min.

[0036] c. after the completion of the b reaction, add dropwise the pH of the nitric acid solution control system of 1M / L in the reaction system to be 7, then add 6.5ml of nitric acid (1M / L) solution containing 0.5g aniline and fully stir; Take 10ml of microemulsion, fully dissolve 1.23g of ammonium persulfate in it, and add it dropwise into a beaker at a rate of 1...

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Abstract

The invention provides a method for preparing a polyaniline / silver nanocomposite material, which belongs to the technical field of composite materials. The method comprises the following steps of: preparing nano-silver particles in microemulsion; and compounding polyaniline in situ to form a nanocomposite material. By using the method, the problem of the agglomeration of nano-silver particles in a composite material can be solved; an organic-inorganic nanocomposite material of a core-shell coating structure of which the nano-silver particles are inside and the polyaniline is outside is formed; and the organic-inorganic nanocomposite material has the characteristics of high electric conductivity, thermal property and electrochemical performance, and good application prospect. The method has the characteristics of simple process, low production cost, high production efficiency and good industrial production prospect.

Description

technical field [0001] The invention relates to the field of preparation and processing of inorganic noble metal and conductive polymer composite materials, in particular to a preparation method of polyaniline / silver nano composite materials. Background technique [0002] As a conductive high polymer, polyaniline has attracted widespread attention for its special proton doping properties, environmental stability and high doping conductivity. In addition, polyaniline is cheap in raw materials and easy to synthesize, so it is widely used in many fields. Show broad application prospects. Nano-silver powder has stable physical and chemical properties, and has excellent performance in electronics, optics and catalysis. Combining polyaniline and nano-silver powder to prepare polyaniline / silver nanocomposites can not only retain the performance characteristics of polyaniline and silver, but also complement each other. Its electrical properties, electrochemical response properties ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08K3/08C08G73/02H01G9/042H01M4/02
CPCY02E60/10
Inventor 李芝华卢健体林伟
Owner CENT SOUTH UNIV
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