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A conductive hydrogel fiber with self-healing properties and preparation method thereof

A conductive hydrogel and self-healing technology, applied in the manufacture of conductive/antistatic filaments, conjugated synthetic polymer artificial filaments, etc., can solve the problems that cannot meet the requirements of use, low gel strength, slow water absorption, etc. problems, achieve excellent mechanical properties, simple preparation process, and enhance the effect of damage resistance

Active Publication Date: 2021-08-17
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydrogels usually have disadvantages such as low gel strength, poor toughness, and slow water absorption, which cannot meet the requirements of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1, dissolving polyvinyl alcohol: M w 89000-98000, 1.2g of polyvinyl alcohol with alcoholysis rate > 99% is added to 6.8 deionized water, placed in a water bath environment, heated to 75°C in a water bath, and stirred vigorously for 2 hours to make polyvinyl alcohol soluble in deionized water , and then leave it to stand until it is confirmed that the polyvinyl alcohol is completely dissolved before use;

[0034] Step 2. Add 0.834g of acrylamide and 1.946g of N-hydroxyethylacrylamide to the homogeneous solution of polyvinyl alcohol prepared in step 1. Through the action of mechanical stirring, the two can be evenly dispersed in the polyvinyl alcohol with a certain viscosity. ready to use in solution;

[0035] Step 3. Add carbon nanotubes to the solution in the above step 2, stir vigorously for 5-8 hours, and perform ultrasonication in an ultrasonic water bath for 20 minutes. Ultrasonic dispersion should be ultrasonicated for 5 minutes and suspended for 3 minutes, ...

Embodiment 2

[0041] Step 1, dissolving polyvinyl alcohol: M w 89000-98000, 1.2g of polyvinyl alcohol with alcoholysis rate > 99% is added to 6.8 deionized water, placed in a water bath environment, heated to 75°C in a water bath, and stirred vigorously for 2 hours to make polyvinyl alcohol soluble in deionized water , and then leave it to stand until it is confirmed that the polyvinyl alcohol is completely dissolved before use;

[0042] Step 2. Add 0.992g of acrylamide and 1.668g of N-hydroxyethylacrylamide to the homogeneous solution of polyvinyl alcohol prepared in step 1. Through the action of mechanical stirring, the two can be evenly dispersed in the polyvinyl alcohol with a certain viscosity. ready to use in solution;

[0043] Step 3. Add carbon nanotubes to the solution in the above step 2, stir vigorously for 5-8 hours, perform ultrasonication in an ultrasonic water bath, ultrasonication for 30 minutes, and ultrasonic dispersion for 5 minutes and pause for 3 minutes, so that the ...

Embodiment 3

[0049] Step 1, dissolving polyvinyl alcohol: M w 89000-98000, 1.2g of polyvinyl alcohol with alcoholysis rate > 99% is added to 6.8 deionized water, placed in a water bath environment, heated to 75°C in a water bath, and stirred vigorously for 2 hours to make polyvinyl alcohol soluble in deionized water , and then leave it to stand until it is confirmed that the polyvinyl alcohol is completely dissolved before use;

[0050] Step 2. Add 0.834g of acrylamide and 1.946g of N-hydroxyethylacrylamide to the homogeneous solution of polyvinyl alcohol prepared in step 1. Through the action of mechanical stirring, the two can be evenly dispersed in the polyvinyl alcohol with a certain viscosity. ready to use in solution;

[0051] Step 3: Add carbon nanotubes to the solution in the above step 2, stir vigorously for 5-8 hours, and perform ultrasonication in an ultrasonic water bath for 40 minutes. Ultrasonic dispersion should be ultrasonicated for 5 minutes and suspended for 3 minutes, ...

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Abstract

The invention relates to the field of smart materials, and discloses a conductive hydrogel fiber with self-repairing performance and a preparation method thereof. The present invention uses polyvinyl alcohol, acrylamide, N-hydroxyethyl acrylamide, and carbon nanotubes as monomers, adopts chemical crosslinking and physical crosslinking to obtain a hydrogel with self-repairing ability, and adopts wet spinning The method of silk has obtained conductive hydrogel fibers. At the same time, hydrogels also have good toughness and flexibility. They can be woven into fiber cloth, and can also be mixed with other fibers into various functional fabrics, or simply as a wire.

Description

technical field [0001] The invention relates to the field of smart materials, in particular to a conductive hydrogel fiber with self-repairing properties and a preparation method thereof. Background technique [0002] Hydrogel is a gel with water as the dispersion medium. A part of hydrophobic groups and hydrophilic residues are introduced into the water-soluble polymer with a network cross-linked structure. joint polymer. It is a polymer network system, which is soft in nature, can maintain a certain shape, and can absorb a large amount of water. PVA hydrogel has good non-toxicity and biocompatibility, and can be applied in daily life and even in biomedicine. [0003] Hydrogels usually have disadvantages such as low gel strength, poor toughness, and slow water absorption, which cannot meet the requirements of use. Therefore, the cross-linking method is used to enhance the mechanical properties such as the strength and toughness of the hydrogel to enhance the usability o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/10D01F1/09
CPCD01F1/09D01F8/10
Inventor 万军民帅卢屹峥胡智文王秉彭志勤
Owner ZHEJIANG SCI-TECH UNIV