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A kind of preparation method of polypyrrole/inorganic nano composite material

An inorganic nano and composite material technology, applied in electrolytic coatings, anodic oxidation, surface reaction electrolytic coatings, etc., can solve the problem of difficulty in ensuring sufficient dispersion of inorganic nanoparticles, and achieve easy mass preparation, low energy consumption, and uniform particle distribution. Effect

Inactive Publication Date: 2018-09-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to propose a new method for the preparation of polypyrrole / inorganic nanocomposite materials based on electrochemical synthesis, aiming at the problem that the existing electrochemical synthesis technology is difficult to ensure that the inorganic nanoparticles are fully dispersed in the water phase. In order to ensure the good dispersion of inorganic nanoparticles in the polypyrrole matrix, and then significantly improve the application performance of polypyrrole / inorganic nanocomposites

Method used

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  • A kind of preparation method of polypyrrole/inorganic nano composite material
  • A kind of preparation method of polypyrrole/inorganic nano composite material
  • A kind of preparation method of polypyrrole/inorganic nano composite material

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Embodiment 1

[0023] Example 1: Add 2.08g, 6.24g and 12.48g of ethyl orthosilicate to 200ml of distilled water respectively, add 20ml of pure ethanol respectively, and mechanically stir and hydrolyze for 24 hours at 25°C to obtain 0.05mol / L, 0.15mol / L and 0.3mol / L silica sol. After purifying 2.36g of pyrrole by vacuum distillation, it was added to the silica sol system, nitrogen gas was continuously introduced to remove oxygen, and stirred for 30 minutes to mix well. Add the uniformly mixed liquid into the electrolytic cell, and use cyclic voltammetry to anodize to generate polypyrrole / nano-silicon dioxide composite materials. The scanning potential is between 0.6 and 2.0V, and the number of cycles is between 50 and 400. The speed is 50mv / s, scan ten circles. The polypyrrole / nano-silicon dioxide composite material obtained on the surface of the anode electrode was scraped off, and the obtained composite material was alternately washed three times with ethanol and water. After drying at 80...

Embodiment 2

[0024] Example 2: 2.5g, 7.5g, and 15g of tetrabutyl titanate were added to 200ml of distilled water, respectively, and 20ml of pure ethanol were added to obtain 0.05mol / L, 0.15mol / L, and 0.3mol / L titanium oxide sols in sequence. After 2.36 g of pyrrole was purified by vacuum distillation, it was added to the titanium oxide sol system, and nitrogen gas was continuously introduced to remove oxygen, and stirred and mixed for 30 minutes. The uniformly mixed liquid is added to the electrolytic cell, and the polypyrrole / nano-titanium dioxide composite material is generated by anodic oxidation using cyclic voltammetry. The scanning potential is between 0.6 and 2.0V, and the scanning speed is 50mv / s, and the scanning is performed ten times. The obtained polypyrrole / nano-titanium dioxide composite material on the surface of the anode electrode was scraped off, and the obtained composite material was alternately washed three times with ethanol and water. After drying at 80°C for 24, the...

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Abstract

The invention discloses a preparation method of polypyrrole / inorganic nano composite material. It is a preparation method of nanocomposite structure materials generated by electrochemical in-situ reaction. In the invention, uniformly dispersed inorganic nano particle hydrosol is firstly prepared by a sol-gel method, and then pyrrole monomer is added into the hydrosol to prepare the composite material in situ. The above preparation method ensures good dispersion of the inorganic nanoparticles in the polypyrrole matrix, thereby significantly improving the application performance of the polypyrrole / inorganic nanocomposite material. And it is directly generated in situ by electrochemical reaction, the synthesis process is simple, green and pollution-free. Therefore, the composite material has good application prospects and economic benefits.

Description

technical field [0001] The invention relates to a preparation method of a polypyrrole / inorganic nanocomposite material, belonging to the field of material preparation. Background technique [0002] Polypyrrole is a heterocyclic conjugated conductive polymer. After appropriate doping with inorganic nano-fillers, composite materials with excellent electrical conductivity, magnetism, heat resistance and mechanical properties can be obtained. This type of composite material has broad application prospects in the fields of sensors, supercapacitors, conductive composite materials, solar cells, and metal anti-corrosion coatings. At present, polypyrrole / inorganic nanocomposites are mostly prepared by chemical oxidation in organic solvents. Due to the high volatility and physiological toxicity of organic solvents, the industrial production of polypyrrole / inorganic nanocomposites is limited. [0003] Electrochemical synthesis is a method developed in recent years to prepare polymer / ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/04C08K3/36C08K3/22C08G73/06C25D11/02
CPCC08G73/0611C08K3/22C08K3/36C08K2003/2241C08K2201/011C25D11/024C08L79/04
Inventor 杨飞燕群李传宪孙广宇
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)