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Preparation method of conductive doped polypyrrole

A conductive poly-pyrrole technology, applied in the direction of non-metallic conductors, organic material conductors, etc., can solve the problems of high temperature requirements, high process implementation conditions, long reaction time, etc., and achieve simple synthesis process, short synthesis time, The effect of high conductivity

Inactive Publication Date: 2010-09-29
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent ZL2006100302410.X reports the preparation method of conductive polypyrrole nano hollow spheres. This method is dispersed by ultrasound and reacted at 100°C to 180°C to obtain composite particles of conductive polypyrrole and silica nanospheres. However, the method Process implementation conditions are relatively high
The implementation process of this method is simple, but the temperature requirement is high, -20 ℃ ~ 30 ℃; and the reaction time is very long, up to 48 hours

Method used

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  • Preparation method of conductive doped polypyrrole
  • Preparation method of conductive doped polypyrrole
  • Preparation method of conductive doped polypyrrole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add the aqueous solution containing 0.011 mol of ferric chloride to the aqueous solution containing 0.098 mol of sulfamic acid and 0.014 mol of pyrrole monomer mixed in advance under stirring, and stir at 25°C under the protection of nitrogen , the reaction continued for 6 hours, the reaction solution was filtered and washed until the filtrate was neutral; finally, the filter cake was vacuum-dried at a temperature of 40°C, and the black conductive powder of polypyrrole was obtained after crushing, and the conductivity measured by pressing the tablet was 2.4 S· cm -1 .

Embodiment 2

[0017] Add the aqueous solution containing 0.011mol of ferric chloride into the aqueous solution containing 0.13mol of sulfamic acid and 0.014mol of pyrrole monomer mixed in advance under stirring, and stir at 25°C under the protection of nitrogen , the reaction continued for 6 hours, the reaction solution was filtered and washed until the filtrate was neutral; finally, the filter cake was vacuum-dried at a temperature of 40°C, and the polypyrrole black conductive powder was obtained after crushing, and the conductivity measured by pressing the tablet was 3.4 S cm -1 .

Embodiment 3

[0019] Add the aqueous solution containing 0.011mol of ferric chloride into the aqueous solution containing 0.15mol of sulfamic acid and 0.014mol of pyrrole monomer mixed in advance under stirring, and stir at 25°C under the protection of nitrogen , the reaction lasted for 30 minutes, and the reaction solution was filtered and washed until the filtrate was neutral; finally, the filter cake was vacuum-dried at a temperature of 40°C and pulverized to obtain polypyrrole black conductive powder, and the conductivity measured by pressing the tablet was 0.3S cm -1 .

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Abstract

The invention discloses a preparation method of conductive doped polypyrrole, comprising the following steps of: (1) mixing sulfamic acid, polypyrrole and water, wherein the mole ratio of the sulfamic acid to the polypyrrole is 0.3-11:1; (2) in a stirring state and under the protection of nitrogen, adding an oxidant into the solution, and reacting at the temperature of 10-40 DEG C for 10min to 6h, wherein the mole ratio of the oxidant to the polypyrrole is 0.5-1.2:1; (3) filtering and washing to the reaction liquid until the filtrate is neutral; and (4) carrying out vacuum drying on a filter cake at the temperature of 40 DEG C, and smashing to obtain black polypyrrole conductive powder.

Description

technical field [0001] The invention relates to a preparation method of a conductive material, which is characterized in that the preparation method of the polypyrrole conductive material adopts sulfamic acid as a dopant. Background technique [0002] Conductive polymers are a new research field developed in the 1970s. They have broad application prospects in electrode materials for chemical power sources, modified electrodes, enzyme electrodes, and electrochromic displays. Among them, conductive polymers with conjugated double bonds have high conductivity. Compared with other conductive polymers, molecular polypyrrole has attracted more and more attention due to its advantages of high conductivity, easy film formation, softness, and non-toxicity due to its convenient synthesis and good oxidation resistance. [0003] Pyrrole monomer can be oxidized and polymerized into polypyrrole relatively quickly in the presence of an oxidizing agent, but pure polypyrrole has poor conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08K5/435C08L79/04H01B1/12
Inventor 冯辉霞刘生丽张建强王毅裴先武邵亮刘静晨
Owner LANZHOU UNIVERSITY OF TECHNOLOGY