Preparation method of flexible carboxylated nitrile butadiene rubber composite conductive film

A technology of carboxylated nitrile rubber and composite conductive film, which is applied in the field of functional material preparation, can solve problems such as limited complexation ability, low conductivity, and poor stability of composite conductive materials, and achieves increased load capacity, improved conductivity, and excellent conductivity performance effect

Active Publication Date: 2019-09-06
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] A preparation method of flexible carboxyl nitrile rubber composite conductive film, the steps are as follows:

[0021] (1) Add 1.5 g of an aqueous solution of a 30% polyethylenimine crosslinking agent dropwise into 10 g of nitrile rubber emulsion, and stir at 80°C for 2 hours to obtain a polyethylenimine crosslinking agent / carboxylated nitrile latex copolymer mixed solution, after standing for defoaming, the polymer film casting liquid is obtained;

[0022] (2) Cast the film casting solution in step (1) onto a glass plate, scrape it into a liquid film with a thickness of 400 microns with a scraper, and immerse the glass plate with a liquid film in 50 grams of a 5% copper sulfate pentahydrate aqueous solution After soaking at 10°C for 4 hours, add 50 grams of 5% sodium thiosulfate aqueous solution, raise the temperature to 95°C and react for 0.5 hours, take out the blended membrane, rinse with water, and dry to obtain a flexible carboxylated nitrile rubber compound cond...

Embodiment 2

[0024] A preparation method of flexible carboxyl nitrile rubber composite conductive film, the steps are as follows:

[0025] (1) Add 0.5 g of an aqueous solution of 80% polyethylenimine cross-linking agent dropwise to 10 g of nitrile rubber emulsion, and stir at 60°C for 3 hours to obtain a polyethylenimine cross-linking agent / carboxylated nitrile latex copolymer mixed solution, after standing for defoaming, the polymer film casting liquid is obtained;

[0026] (2) Cast the film casting solution in step (1) onto a glass plate, scrape it into a liquid film with a thickness of 400 microns with a scraper, and immerse the glass plate with a liquid film in 50 grams of a 2% copper sulfate pentahydrate aqueous solution After soaking at 40°C for 1 hour, add 50 grams of 2% sodium thiosulfate aqueous solution, heat up to 75°C and react for 4 hours, take out the blended film, rinse with water, and dry to obtain a flexible carboxylated nitrile rubber compound conductive film. The elect...

Embodiment 3

[0028] A preparation method of flexible carboxyl nitrile rubber composite conductive film, the steps are as follows:

[0029] (1) Add 1.0 g of an aqueous solution of 70% polyethylenimine crosslinking agent dropwise to 10 g of nitrile rubber emulsion, and stir at 70°C for 2.5 hours to obtain polyethylenimine crosslinking agent / carboxylated nitrile latex After blending the solution and standing for defoaming, the polymer casting solution is obtained;

[0030] (2) Cast the film casting solution in step (1) onto a glass plate, scrape it into a liquid film with a thickness of 1200 microns with a scraper, and immerse the glass plate with a liquid film in 50 grams of a 5% copper sulfate pentahydrate aqueous solution After soaking at 30°C for 2 hours, add 50 grams of 5% sodium thiosulfate aqueous solution, raise the temperature to 85°C for 2 hours, take out the blended film, rinse with water, and dry to obtain a flexible carboxylated nitrile rubber compound. conductive film. The ele...

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PUM

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Abstract

The invention relates to the technical field of functional material preparation, and especially relates to a preparation method of a flexible carboxylated nitrile butadiene rubber composite conductivefilm. The preparation method comprises the following steps: mixing of a carboxylated nitrile butadiene rubber emulsion with a polyaziridine crosslinker solution, film coating, immersion in a copper sulfate-containing solution for solidification, addition of an aqueous sodium thiosulfate solution to the copper sulfate solution after molding, heating, and a chemical bath process reaction for finally obtaining the carboxylated nitrile butadiene rubber composite conductive film. The copper sulfate prepared by the method grows on the surface of the nitrile butadiene rubber, and also grows and polymerizes inside the nitrile butadiene rubber, so the formed copper sulfate covers the surface of a nitrile butadiene rubber matrix film and penetrates into the film to completely complete the effectiveadsorption of copper sulfide, thereby the composite film has an excellent conductive property.

Description

technical field [0001] 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. Background technique [0002] Flexible conductive composites have excellent stretchability, conductivity, and strain sensitivity, so they have broad application prospects in sensors, foldable electronic screens, artificial skin and organs, etc. Flexible electronics is an emerging electronic technology that combines organic or inorganic material electronic devices with flexible substrates. Due to its good flexibility, ductility, and high-efficiency and low-cost preparation technology, it has a wide range of applications in information, energy, medical, and national defense. application prospects. In recent years, flexible electronic technology has shown a momentum of rapid development. Many well-known universities have successively established flexible electronic t...

Claims

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Application Information

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Patent Type & Authority Applications(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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