A kind of preparation method of polythiophene/nano-silver composite conductive material

A composite conductive and polythiophene technology, applied in nanotechnology and other directions, can solve problems such as poor mechanical properties, high cost, easy sedimentation, etc., and achieve the effects of increasing economic added value, reducing dosage, and uniform particle size.

Inactive Publication Date: 2018-11-06
SHANGHAI CHILONG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of the existing silver-based conductive materials or polythiophene-based conductive materials, which are only a single component of metal or organic matter, and suffer from easy sedimentation, high cost, or poor mechanical properties during use, the present invention creatively proposes a new type of polythiophene / The preparation method of nano-silver composite conductive material, promptly adopts polythiophene as base material, generates nano-silver in situ photosensitive reaction on its surface, thereby obtains polythiophene / nano-silver composite conductive material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare 1 mol / L silver nitrate solution and 1 mol / L potassium bromide solution respectively for later use. Under the conditions of light and stirring, the polythiophene solution was placed in a beaker as a substrate, silver nitrate and potassium bromide were added dropwise to the beaker, and silver bromide precipitates formed on the surface of the polythiophene. (500W high-pressure mercury lamp) decomposes to generate silver nanoparticles. The system was reacted under light and stirring for another 20 minutes. The product is separated at a high speed by a centrifuge, and washed several times with deionized water to obtain a polythiophene / nano-silver composite conductive material.

Embodiment 2

[0021] Prepare 5mol / L silver nitrate solution and 5mol / L potassium chloride solution respectively for later use. Under the conditions of light and stirring, the polythiophene solution was placed in a beaker as a base material, silver nitrate and potassium chloride were added dropwise to the beaker, and silver chloride precipitates formed on the surface of the polythiophene. (500W high-pressure mercury lamp) decomposes to generate silver nanoparticles. After the system was reacted under light and stirring for 2 hours, the product was separated at high speed by a centrifuge and washed several times with deionized water to obtain a polythiophene / nano-silver composite conductive material.

Embodiment 3

[0023] Prepare 3mol / L silver nitrate solution and 3mol / L potassium iodide solution respectively for later use. Under the condition of light and stirring, the polythiophene solution is placed in a beaker as the substrate, silver nitrate and potassium iodide are added dropwise to the beaker, and silver iodide precipitates are formed on the surface of the polythiophene, and silver iodide is formed under light conditions (500W high-pressure mercury lamp). Decomposition produces silver nanoparticles. The system was reacted under light and stirring for another hour, and the product was separated at high speed by a centrifuge, and washed several times with deionized water to obtain a polythiophene / nano-silver composite conductive material.

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Abstract

The present invention belongs to the technical field of inorganic chemistry, and particularly relates to a polythiophene / nanometer silver composite electric conduction material preparation method, which comprises: weighing silver nitrate and a soluble halide (or soluble oxyacid salt) and preparing into an aqueous solution; under illumination and stirring, placing a polythiophene solution into a beaker as a substrate, adding the silver nitrate and the soluble halide(or soluble oxyacid salt) into the beaker in a dropwise manner, and forming silver salt precipitate on the polythiophene surface, wherein the silver salt precipitate can be subjected to a photodecomposition reaction; carrying out a photodecomposition reaction on the silver salt precipitate under an illumination condition to produce the silver nanoparticles; and carrying out a reaction on the reaction system for a certain time under illumination, carrying out high speed separation on the product through a centrifugal separator, and washing a plurality of times with deionized water so as to obtain the polythiophene / nanometer silver composite electric conduction material. According to the present invention, the prepared polythiophene / nanometer silver composite electric conduction powder has advantages of excellent electrical conductivity, high chemical stability and the like, and can be widely used in the fields of super capacitors, chemical industry, and the like.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry, and in particular relates to a preparation method of a high-conductivity polythiophene / nano-silver composite conductive material. Background technique [0002] With the continuous advancement of social science and technology, there is an increasing demand for conductive materials, which are widely used in many fields such as medicine, petroleum, chemical industry, communication, electronics, automobiles and ceramics. Traditional conductive powders include carbon-based (such as graphene, carbon nanotubes, carbon black, graphite, acetylene black and carbon fiber, etc.), metal-based (such as metal powder and metal fiber, etc.), doped metal oxide-based ( ATO and ZAO, etc.) and organic polymer conductive materials (such as polyaniline, polythiophene, etc.) and other categories. The main disadvantages of carbon-based conductive powder are poor dispersion, dark color, difficult to color, and easy to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L65/00C08K3/08B22F9/24B82Y40/00
Inventor 邱辉
Owner SHANGHAI CHILONG TECH CO LTD
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