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Composite electric-conduction hydrogel preparation method

A composite conductive and hydrogel technology, applied in the preparation/purification of carbon, etc., can solve the problems of separation of conductive fillers, poor biocompatibility of hydrogels, unstable structure of conductive hydrogels, etc., and achieve good conductivity. , the effect of increasing the thickness of the interface layer and increasing the conductivity

Inactive Publication Date: 2019-12-13
李忠勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is aimed at the current common conductive hydrogel due to the lack of interaction force between the conductive filler and the hydrogel matrix, which makes the structure of the conductive hydrogel unstable, and the conductive filler is easily separated from the hydrogel matrix, which affects The electrical and mechanical properties of conductive hydrogels, and the common defects of poor biocompatibility of hydrogels, provide a preparation method for composite conductive hydrogels

Method used

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  • Composite electric-conduction hydrogel preparation method

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Effect test

Embodiment 1

[0029] Preparation of the mixture:

[0030] Soak the flax fibers in the biogas solution for 1 hour, take them out, put them in a mold room with a temperature of 40°C and a relative air humidity of 70%, let them stand for 1 week to mold, then move the moldy flax fibers into a fermenter and feed them to the fermentation tank. Add quality water such as moldy flax fiber into the tank, stir evenly, seal the tank mouth, and let it stand for fermentation at 35°C for 3 days; Carbonize at 200°C for 1 hour to obtain a self-made porous carbon material. Mix the self-made porous carbon material and a nickel nitrate solution with a mass fraction of 30% at a mass ratio of 1:5 to obtain a mixed solution.

[0031] Preparation of homemade conductive filler:

[0032] Move the above mixed solution into an ultrasonic oscillator, immerse and mix with ultrasonic oscillation at a frequency of 40 kHz for 1 hour, filter after the ultrasonic oscillation and impregnation, separate the impregnated filter...

Embodiment 2

[0040] Preparation of the mixture:

[0041] Soak the flax fibers in the biogas solution for 1 hour, take them out, put them in a mold room with a temperature of 45°C and a relative air humidity of 75%, let them stand for 1 week to mold, then move the moldy flax fibers into a fermenter and feed them to the fermentation tank. Add quality water such as moldy flax fiber into the tank, stir evenly, seal the tank mouth, and let it stand for fermentation at 40°C for 4 days; Carbonize at 250°C for 1 hour to obtain a self-made porous carbon material. Mix the self-made porous carbon material and a nickel nitrate solution with a mass fraction of 30% at a mass ratio of 1:5 to obtain a mixed solution.

[0042] Preparation of homemade conductive filler:

[0043] Move the above mixed solution into an ultrasonic oscillator, immerse and mix with ultrasonic oscillation at a frequency of 45 kHz for 1 hour, filter after the ultrasonic oscillation and impregnation, separate the impregnated filter...

Embodiment 3

[0051] Preparation of the mixture:

[0052] Soak the flax fibers in the biogas solution for 2 hours, take them out, put them in a mold room with a temperature of 50°C and a relative air humidity of 80%, and let them stand for 2 weeks to mold. Add quality water such as moldy flax fiber into the tank, stir evenly, seal the tank mouth, and let it stand for fermentation at 45°C for 5 days; Carbonize at 300°C for 2 hours to obtain a self-made porous carbon material. Mix the self-made porous carbon material and a nickel nitrate solution with a mass fraction of 30% at a mass ratio of 1:5 to obtain a mixed solution.

[0053] Preparation of homemade conductive filler:

[0054] Move the above mixed solution into an ultrasonic oscillator, immerse and mix with ultrasonic oscillation at a frequency of 50 kHz for 2 hours, filter after the ultrasonic oscillation and impregnation, separate the impregnated filter residue, put the impregnated filter residue into the sintering furnace, and heat...

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Abstract

The invention belongs to the technical field of high polymer material preparation, and particularly relates to a composite electric-conduction hydrogel preparation method, wherein the composite electric-conduction hydrogel is prepared by mixing a hydrogel prepolymer, acrylamide, ammonium persulfate, N,N-methylene bisacrylamide and the like. According to the present invention, the self-made electric-conduction filler provides the nano-space limited oxidation environment for the oxidative polymerization of the hydrogel prepolymer so as to prevent the excessive oxidation of the catechol groups; alarge number of the phenolic hydroxyl groups are reserved in the formed hydrogel prepolymer, and the hydrogel prepolymer introduces a large amount of the phenolic hydroxyl groups into the polyacrylamide network, such that the composite electric-conduction material is endowed with good biocompatibility; and in the hydrogel prepolymer polymerization process, the physical anchoring effect is formedbetween the electric-conduction filler and the hydrogel, and the electric-conduction filler further increases the mechanical properties of the hydrogel, such that the finally prepared composite electric-conduction hydrogel has advantages of excellent conductivity, excellent mechanical property, excellent biocompatibility and broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a preparation method of a composite conductive hydrogel. Background technique [0002] Hydrogels are soft materials composed of water and a three-dimensional polymer network. The cross-linking points in the network are chemical cross-linking points formed by covalent bonds or physical cross-linking points formed by non-covalent bonds such as ionic bonds, hydrogen bonds, hydrophobic interactions, and coordination interactions. It is soft in nature, swells quickly, and can maintain a certain shape. Generally, it is a loosely cross-linked polymer material containing a small amount of solid content. It contains a large amount of water inside, has good biocompatibility, and has good responsiveness to external stimuli. It is widely used in agriculture, mining, construction, Various fields such as medicine, cosmetics, petrochemical industry, etc. [0...

Claims

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Application Information

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IPC IPC(8): C08F261/04C08F220/56C08F222/38C08F2/44C08K9/12C08K3/08C08K7/24C01B32/05
CPCC01B32/05C08F2/44C08F261/04C08K3/08C08K7/24C08K9/12C08K2003/0862C08K2201/001C08F220/56C08F222/385
Inventor 李忠勇
Owner 李忠勇
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