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Preparation method of polyurethane/carboxymethyl chitosan/polyaniline conductive film

A technology of carboxymethyl chitosan and polyurethane, which is applied in the field of preparation of polyurethane/carboxymethyl chitosan/polyaniline conductive film, can solve the problems affecting the appearance characteristics of materials, manufacturing and use, retention, etc., and achieve the preparation process The conditions are easy to realize, the effect of improving strength, improving electrical conductivity and mechanical strength

Active Publication Date: 2019-05-21
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polymer materials have high surface resistance and volume resistance. Once triboelectrically charged, static electricity is not easily removed by conduction and stays on the surface of the material, which will not only affect the appearance characteristics, manufacturing and use of the material, but more importantly, there will be potential safety hazards of static electricity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of polyurethane / carboxymethyl chitosan / polyaniline conductive film of the present embodiment comprises the following steps:

[0023] (1) Carboxymethyl chitosan is prepared with distilled water into an aqueous solution with a concentration of 1% by mass;

[0024] (2) Dilute the polyethylenimine crosslinking agent with distilled water into an aqueous solution with a concentration of 30% by mass;

[0025] (3) Add 10 grams of aniline to 1000 grams of 1mol / L hydrochloric acid aqueous solution, stir evenly to obtain a coagulation bath solution;

[0026] (4) Mix 60 grams of polyurethane aqueous dispersion with 40 grams of carboxymethyl chitosan solution obtained in step (1), and add 6 grams of polyethylenimine crosslinking agent aqueous solution obtained in step (2) and stir evenly to obtain mixed solution; after static defoaming, the polymer casting solution is obtained;

[0027] (5) Cast 10 grams of the casting solution onto a glass plate, scra...

Embodiment 2

[0029] A kind of preparation method of polyurethane / carboxymethyl chitosan / polyaniline conductive film of the present embodiment comprises the following steps:

[0030] (1) Carboxymethyl chitosan is prepared with distilled water into an aqueous solution with a concentration of 3% by mass;

[0031] (2) Dilute the polyethylenimine crosslinking agent with distilled water into an aqueous solution with a concentration of 10% by mass;

[0032] (3) Add 50 grams of aniline to 1000 parts of 1 mol / L hydrochloric acid aqueous solution, stir evenly to obtain a coagulation bath solution;

[0033] (4) Mix 80 grams of polyurethane aqueous dispersion with 20 grams of carboxymethyl chitosan solution obtained in step (1), and add 2 grams of polyethylenimine crosslinking agent aqueous solution obtained in step (2) and stir evenly to obtain mixed solution; after static defoaming, the polymer casting solution is obtained;

[0034] (5) Cast 30 grams of casting solution onto a glass plate, scrape ...

Embodiment 3

[0036] A kind of preparation method of polyurethane / carboxymethyl chitosan / polyaniline conductive film of the present embodiment comprises the following steps:

[0037] (1) Carboxymethyl chitosan is prepared with distilled water into an aqueous solution with a concentration of 2% by mass;

[0038] (2) Dilute the polyethylenimine crosslinking agent with distilled water into an aqueous solution with a concentration of 20% by mass;

[0039] (3) Add 25 grams of aniline to 1000 parts of 1mol / L hydrochloric acid aqueous solution, stir evenly to obtain a coagulation bath solution;

[0040](4) Mix 70 grams of polyurethane aqueous dispersion with 30 grams of carboxymethyl chitosan solution obtained in step (1), add 4 grams of polyethylenimine crosslinking agent aqueous solution obtained in step (2) and stir evenly to obtain mixed solution; after static defoaming, the polymer casting solution is obtained;

[0041] (5) Cast 20 grams of casting solution onto a glass plate, scrape it int...

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Abstract

The invention relates to the technical field of composite conductive materials, in particular to a preparation method of a polyurethane / carboxymethyl chitosan / polyaniline conductive film. The preparation method comprises the steps: firstly, mixing a polyurethane water dispersion solution, a chitosan solution and a polyaziridine cross-linking agent solution, dipping a film into an acidic solution containing an aniline monomer for curing after film coating, adding an acidic solution containing an oxidizing agent into a coagulation bath after formation, enabling aniline to produce polymerizationreaction so as to generate polyaniline, and finally obtaining the polyurethane / carboxymethyl chitosan / polyaniline composite conductive film, wherein the prepared polyaniline not only grows on the surface of PU, but also grows and polymerizes in the interior so that the formed polyaniline film can not only cover the surface of the PU matrix film, but also penetrate into the film, the effective adsorption of polyaniline is really completed, and the composite material has excellent conductivity. Compared with an existing method for preparing the polyurethane composite conductive film, the methodhas the advantages that the preparation process conditions are easy to achieve, and the conductive property of the composite material is excellent.

Description

technical field [0001] The invention relates to the technical field of composite conductive materials, in particular to a method for preparing a polyurethane / carboxymethyl chitosan / polyaniline conductive film. Background technique [0002] The antistatic modification method currently used for ordinary polymer materials mainly adopts the method of adding antistatic agents or conductive fillers. Adding an antistatic agent mainly has the problems that the antistatic performance is affected by the relative humidity of the air and poor durability; adding a conductive filler mainly has the problems of uneven conductivity and a decline in the mechanical properties of the material. In recent years, conductive polymers have been favored by more researchers because of their light weight, low cost and excellent electrical conductivity. The intersection of electrochemistry and solid state physics. Among many conductive polymers, compared with other conductive polymers, polyaniline (PA...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L75/04C08L5/08C08L79/02C08L79/04
Inventor 潘玮米立伟刘忠柱裴海燕曲良俊
Owner ZHONGYUAN ENGINEERING COLLEGE
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