Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of polyurethane/carboxymethyl chitosan/polyaniline conductive film

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

Active Publication Date: 2021-09-17
ZHONGYUAN ENGINEERING COLLEGE
View PDF6 Cites 2 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

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. In the present invention, the polyurethane aqueous dispersion, chitosan solution and polyaziridine crosslinking agent solution are firstly mixed, and after the film is coated, it is immersed in an acidic solution containing aniline monomer for curing, and after molding, an oxidizing agent is added to the coagulation bath. Acidic solution, so that aniline is polymerized to generate polyaniline, and finally polyurethane / carboxymethyl chitosan / polyaniline composite conductive film is obtained. The prepared polyaniline not only grows on the surface of PU, but also grows and polymerizes inside, so that the formed The polyaniline film can not only cover the surface of the PU matrix film, but also penetrate into the interior of the film, which truly completes the effective adsorption of polyaniline and makes the composite material have excellent electrical conductivity; compared with the existing method for preparing polyurethane composite conductive film Compared, it has the advantages of easy realization of preparation process conditions and excellent electrical conductivity of composite materials.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com