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Preparation method and application of polypyrrole/polyurethane sponge electric conduction composite

A technology of conductive composite material and polyurethane sponge, which is applied in the measurement of the property force of piezoelectric resistance materials, etc., can solve the problems of limited electrode area of ​​conductive material yield and unsuitable for large-scale production.

Active Publication Date: 2016-12-07
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can produce high-purity polypyrrole thin film materials, and can adjust the performance of the conductive compound by changing the electrolysis conditions; but it is not suitable for large-scale production, and the yield of the prepared conductive material is severely limited by the area of ​​the electrode.

Method used

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preparation example Construction

[0035] The invention discloses a preparation method of a polypyrrole / polyurethane sponge conductive composite material, which comprises the following preparation steps:

[0036]1) dissolving the surfactant into water to form an aqueous surfactant solution; adding pyrrole monomers to the aqueous surfactant solution to obtain a mixed solution of uniformly mixed pyrrole monomers and aqueous surfactant solutions; taking a polyurethane sponge and soaking it in In the mixed solution, a reaction system I is formed;

[0037] The specific reaction process of the step 1) is: in the aqueous surfactant solution with a concentration of 1mmol / L-4mol / L, add pyrrole monomer, and under the condition of stirring speed of 50-500r / min, obtain a uniformly mixed A mixed solution of pyrrole monomer and surfactant aqueous solution, and in the mixed solution, the mass concentration of pyrrole monomer is 0.3-50g / L; take a polyurethane sponge and fully soak it in the mixed solution to form a uniformly m...

Embodiment 1

[0045] A preparation method of polypyrrole / polyurethane sponge conductive composite material, comprising the following preparation steps:

[0046] 1) Weigh 0.1450g of anthraquinone-2-sulfonic acid sodium salt and dissolve it in 250ml of deionized water, then add 0.15g of pyrrole monomer, under the condition of stirring speed of 250r / min, make it contain surface active uniformly dispersed in the aqueous solution of the agent to obtain a mixed solution; take a polyurethane sponge with a volume of 1 cm × 1 cm × 1 cm as the base material, fully soak it in the above mixed solution, and soak for 5 minutes to form a uniformly mixed polyurethane sponge and pyrrole single body mixed solution;

[0047] 2) Weigh 0.0800g of phosphoric acid and dissolve it in 250ml of deionized water, then add 0.4500g of potassium dichromate, mix evenly, and place it in an ice bath at 0°C for later use; control the polyurethane sponge and pyrrole single The stirring speed of the mixed solution of the body...

Embodiment 2

[0050] A preparation method of polypyrrole / polyurethane sponge conductive composite material, comprising the following preparation steps:

[0051] 1) Weigh 2.4320g of 1,2-naphthoquinone-4-sulfonic acid sodium salt and dissolve it in 150ml of deionized water, then add 0.05g of pyrrole monomer, and make it Uniformly disperse in an aqueous solution containing a surfactant to obtain a mixed solution; take a polyurethane sponge with a volume of 2cm×2cm×2cm as a substrate, and fully soak it in the above mixed solution for 10 minutes to form a uniformly mixed polyurethane The mixed solution of sponge and pyrrole monomer;

[0052] 2) Weigh 0.8010g of phosphoric acid and dissolve it in 250ml of deionized water, then add 0.0920g of hydrogen peroxide and mix evenly, and control the temperature at 10°C; control the temperature of the mixed solution of polyurethane sponge and pyrrole monomer in the step 1). The stirring speed is 50r / min, add the prepared acidic aqueous solution of hydroge...

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Abstract

The invention discloses a preparation method and application of a polypyrrole / polyurethane sponge electric conduction composite, and belongs to the field of functional high molecular materials. The preparation method comprises the following steps of (1) preparing a surfactant aqueous solution: adding pyrrole monomers to the surfactant aqueous solution so as to obtain a mixed solution of the pyrrole monomers and the surfactant aqueous solution which are uniformly mixed; and soaking polyurethane sponge in the mixed solution so as to obtain a mixed solution of the polyurethane sponge and the pyrrole monomers, which are uniformly mixed; and (2) adding a neutral or acidulous water solution containing an oxidizer to the mixed solution of the polyurethane sponge and the pyrrole monomers, and performing washing and drying by air so as to prepare the polypyrrole / polyurethane sponge electric conduction composite. The polypyrrole / polyurethane sponge electric conduction composite prepared by the preparation method disclosed by the invention not only has certain electrical conductivity, but also the specific surface area of samples is enlarged, so that the contact sensibility of the sponge in a compression process is improved, and the polypyrrole / polyurethane sponge electric conduction composite can be used in the respects of flexible pressure sensors.

Description

technical field [0001] The invention belongs to the field of polymer materials with functions, and in particular relates to a preparation method and application of a polypyrrole / polyurethane sponge conductive composite material. Background technique [0002] Polypyrrole has always attracted the attention of the scientific and technological circles in polymer conductive composite materials. Polypyrrole (PPY) is one of the important conductive composite materials. Its completely reversible redox reaction and doping and dedoping process are accompanied by charge transfer. and color changes. Polypyrrole has the advantages of stable conductivity in air, excellent mechanical properties, low resistivity, easy synthesis and unique conductivity, and has been applied in many new fields, such as exchange electrodes, gas-sensitive materials, electrochromic Displays, electronic devices, biosensors and functional films and other fields. [0003] The polyurethane / polypyrrole composite co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/42C08G73/06G01L1/18C08L75/04
CPCC08G73/0611C08J9/405C08J9/42C08J2375/04G01L1/18
Inventor 李沐芳王栋李玉琴钟卫兵李飞刘轲刘琼珍蒋海青
Owner WUHAN TEXTILE UNIV
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