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A kind of preparation method of flexible carboxylated nitrile rubber composite conductive film

A carboxyl nitrile-butadiene rubber and composite conductive film technology, which is applied in the field of functional material preparation, can solve the problems of limited complexing capacity, low conductivity, poor stability of composite conductive materials, etc. performance effect

Active Publication Date: 2021-07-09
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the complexing ability of the cyano group in the nitrile rubber to copper ions is limited, and the copper sulfide / nitrile rubber composite conductive material prepared by this method often has problems such as weak bonding between copper sulfide and the matrix, uneven surface dispersion, etc. As a result, the composite conductive material has poor stability and low conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Method for preparing a flexible carboxylicennitrile rubber composite conductive film, steps are as follows:

[0021] (1) 1.5 grams of concentration of 30% polyazidine crosslinking agent is added dropwise to 10 kThenonitrile rubber emulsion, stirred at 80 ° C for 2 h, resulting in polyfitridine crosslinking agent / carboxylicitrile latex After mixing solution, after standing, the polymer cast film solution is obtained.

[0022] (2) Run the step (1) cast film flow to the glass plate, scrape the thickness of 400 microns with a doctor blade, and immerse the glass sheet with a liquid film into a 50 gram concentration of 5% aqueous sulfate solution. In the addition of 4 hours at 10 ° C for 4 hours, the solution of a sodium thiosulfate sulfate solution was added, and the temperature was raised to 95 ° C for 0.5 hours. After removing the blend film, rinse it with water, dried to obtain a flexible carboxylicitrile rubber composite Conductive film. This flexible carboxylicitronitrile...

Embodiment 2

[0024] Method for preparing a flexible carboxylicennitrile rubber composite conductive film, steps are as follows:

[0025] (1) 0.5 grams of concentration of 80% polyazidine crosslinking agent is added dropwise to the 10 kThenonitrile rubber emulsion, stirred at 60 ° C for 3 h, resulting in a polyzidine crosslinking agent / carboxylicitrile latex After mixing solution, after standing, the polymer cast film solution is obtained.

[0026] (2) Run the step (1) cast film flow to the glass plate, scrape the thickness of 400 microns by a doctor blade, and immersely immersed 50 g of a glass plate with a liquid film to a concentration of 2% aqueous sulfate aqueous solution. In addition of 40 ° C for 1 hour, 50 g of concentration of 2% aqueous sulfate solution was added, and the temperature was raised to 75 ° C for 4 hours. After removing the blend film, rinse with water, dried to obtain flexible carboxylicitrile rubber composite Conductive film. This flexible carboxylicitrile rubber compo...

Embodiment 3

[0028] Method for preparing a flexible carboxylicennitrile rubber composite conductive film, steps are as follows:

[0029] (1) 1.0 grams of concentration of 70% of the polyazidine crosslinking agent is added dropwise to 10 kThenonitrile rubber emulsion, stirred at 70 ° C for 2.5 h, resulting in polyfitridine crosslinking agent / carboxylicitrile latex Common mixed solution, after standing, the polymer cast film solution is prepared;

[0030] (2) Roll the step (1) cast film flow to the glass plate, scrape a liquid film having a thickness of 1200 microns by a doctor blade, and immerse the glass sheet with a liquid film into a 5% 5% aqueous sulfate solution. In the addition of 50 g of a concentration of 5% aqueous sodium sulfate solution at 30 ° C, it was added to 85 ° C for 2 hours, and then the blend film was rinsed after removing the blend film. After drying, it was dried to obtain a flexible carboxylicitrile rubber composite. Conductive film. This flexible carboxylicitrile rubbe...

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PUM

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Abstract

The invention relates to the technical field of preparation of functional materials, in particular to a method for preparing a flexible carboxylated nitrile rubber composite conductive film. First, mix the carboxylated nitrile rubber emulsion and the polyethylenimine crosslinking agent solution. After coating the film, immerse it in a solution containing copper sulfate for curing. After molding, add an aqueous solution of sodium thiosulfate to the copper sulfate solution, and use a chemical bath to raise the temperature. Copper sulfide was generated by the reaction method, and finally a carboxylated nitrile rubber composite conductive film was obtained. The copper sulfate prepared by this method not only grows on the surface of the nitrile rubber, but also grows and polymerizes inside, so that the formed copper sulfate can not only cover the surface of the nitrile rubber matrix film, but also penetrate into the inside of the film, truly completing the copper sulfide process. The effective adsorption makes the composite material have excellent electrical conductivity.

Description

Technical field [0001] The present invention relates to the technical field of functional material preparation, particularly a method for preparing a flexible carboxylicitrile rubber composite conductive film. Background technique [0002] The flexible conductive composites have excellent stretchable, conductivity, and strain sensitivity, thereby having a wide range of application prospects in sensors, foldable electronic screens, artificial skin and organs. Flexible electron is an emerging electronic technology that combines organic or inorganic material electronic devices with flexible substrates. Because of its good flexibility, ductility, and high-efficiency and low-cost preparation process, it has a wide range in information, energy, medical and national defense. Application prospects. In recent years, flexible electronic technology has shown rapid development momentum. Many well-known universities have established flexible electronic technology research institutions, and a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08J3/24C08J7/12C08L13/02
CPCC08J3/24C08J5/18C08J7/12C08J2313/02
Inventor 裴海燕潘玮张慧勤曲良俊陈燕刘红燕张艳丽
Owner ZHONGYUAN ENGINEERING COLLEGE
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