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Preparation method of polypyrrole/straw conductive composite material

A conductive composite material, polypyrrole technology, applied in the field of preparation of polypyrrole/straw conductive composite material, can solve the problems of low conductivity, high density and unstable properties of conductive fillers

Active Publication Date: 2017-05-31
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of polypyrrole / straw conductive composite material for the defects of low conductivity, unstable properties, high cost and high density of conductive fillers currently on the market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Cut the dried straw into small pieces and pulverize it with a pulverizer, then pass it through a 100-mesh sampling sieve, take the lower part of the sampling sieve and dry it in an electric blast drying oven at 50°C for 24 hours to obtain dry straw powder.

[0021] (2) Submerge 10 parts by mass of the dry straw powder obtained in step (1) with 5000 parts by mass of deionized water, add 50 parts by mass of pyrrole and stir for 1 hour, then keep the system at 25°C, and dropwise add 500 parts by mass of pyrrole 10 wt% aqueous solution of ammonium persulfate, kept at 25°C and continued to stir for 5 hours, suction filtered, then washed 3 times with 30 wt% ethanol aqueous solution, and finally washed with distilled water until the filtrate became clear, and the obtained solid product was heated at 55°C Dry in an electric blast drying oven for 24 hours, and then cool to prepare polypyrrole / straw conductive composite material.

[0022] The polypyrrole / straw conductive comp...

Embodiment 2

[0024] (1) Cut the dried straw into small pieces and pulverize it with a pulverizer, then pass it through a 100-mesh sampling sieve, take the lower part of the sampling sieve and dry it in an electric blast drying oven at 50°C for 24 hours to obtain dry straw powder.

[0025] (2) Submerge 10 parts by mass of the dry straw powder prepared in step (1) with 1000 parts by mass of deionized water, add 1 part by mass of pyrrole and stir for 1 hour, then keep the system at 25° C., dropwise add 10 Mass parts of 10 wt% ammonium persulfate aqueous solution were kept at 25°C and continued to stir for 5 hours, suction filtered, then washed 3 times with 30 wt% ethanol aqueous solution, and finally washed with distilled water until the filtrate became clear, and the obtained solid product was obtained at 55 ℃ in an electric blast drying oven for 24 hours, and cooled to obtain polypyrrole / straw conductive composite material.

[0026] The polypyrrole / straw conductive composite material prepar...

Embodiment 3

[0028] (1) Cut the dried straw into small pieces and pulverize it with a pulverizer, then pass it through a 100-mesh sampling sieve, take the lower part of the sampling sieve and dry it in an electric blast drying oven at 50°C for 24 hours to obtain dry straw powder.

[0029] (2) Submerge 100 parts by mass of the dry straw powder prepared in step (1) with 5000 parts by mass of deionized water, add 50 parts by mass of pyrrole and stir for 1 hour, then keep the system at 25°C, and dropwise add 500 parts by mass of pyrrole 10 wt% aqueous solution of ammonium persulfate, kept at 25°C and continued to stir for 5 hours, suction filtered, then washed 3 times with 30 wt% ethanol aqueous solution, and finally washed with distilled water until the filtrate became clear, and the obtained solid product was heated at 55°C Dry in an electric blast drying oven for 24 hours, and then cool to prepare polypyrrole / straw conductive composite material.

[0030] The polypyrrole / straw conductive com...

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PUM

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Abstract

The invention discloses a preparation method of a polypyrrole / straw conductive composite material. The preparation method comprises the following steps: firstly washing smashed straws with water, drying the straws, then adding deionized water and a pyrrole monomer, fully stirring to disperse the components, adding an ammonium persulfate solution, carrying out oxidative polymerization to enable polypyrrole to be covered on the surfaces of straw particles, carrying out suction filtering, washing the straws with deionized water, and finally carrying out vacuum drying to obtain the polypyrrole / straw conductive composite material. The polypyrrole / straw conductive composite material can be used as a conductive filler. According to the preparation method, the surface of straw powder is coated with the polypyrrole, so that the prepared conductive filler is extremely high in conductivity; furthermore, the straws are environment-friendly, readily available and relatively low in cost, so that the preparation method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, in particular to a preparation method of a polypyrrole / straw conductive composite material. Background technique [0002] Conductive polymers are usually insoluble and infusible, which greatly limits the processing and wide application of conductive polymers. Therefore, since the late 1980s, improving the processability of conductive polymers to further realize the industrial application of conductive polymer materials has become an important research and development direction of conductive polymers. As a typical conductive polymer material, polypyrrole (PPy) has always been one of the research hotspots in this field, but its main disadvantages are insoluble, difficult to melt, and poor processability, which limit its wide application. In order to overcome this shortcoming and improve its machinability, the preparation of conductive polymer composites is an important method t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08L79/04C08L97/02
CPCC08G73/0611C08L79/04C08L97/02C08L2205/16
Inventor 臧利敏杨超周焕福徐旭范辂胡晓明
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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