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A kind of preparation method of biomass nanofiber conductive paper

A nanofiber, conductive paper technology, applied in special paper, paper, papermaking and other directions, can solve the problems of poor controllability, environmental and ecological harm of dispersant, complex dispersion process procedures, etc., and achieves simple and controllable production process and reasonable cost. Effect

Active Publication Date: 2015-12-23
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cellulose dissolved in ionic liquid at room temperature can be intermixed with carbon nanotubes, but the removal of excess ionic liquid and its residues is still complicated and cumbersome. Surfactants such as alkylsulfonic acid sodium salt and methylmorphine can be used. Effectively disperse carbon nanotubes in water, but the dispersion process is complicated and controllable, and some dispersants are harmful to the environment and ecology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1: Soluble hydroxylopyolinel cellulose in a thickener into a cellulose nano -fiber -fiber solution, and the mass of the thickener accounts for 3%of the mixed material (dry state).In order to avoid subsequent high -speed cutting process, the material is blocked in the reaction cavity, and the deodorization water is added under the stirring conditions to dilute the above mixed solution to 0.2WT%.

[0022] Step 2: Add 5WT%carbon nanotubes to the diluted state of the cellulose nano -fiber / hydroxypropylene methyl cellulose mixed solution, and the mechanical stirring is initially dispersed with carbon nanotubes.

[0023] Step 3: High -speed homogeneous mechanical shear treatment.The preliminary decentralized hybrid solution was cut and dispersed in the micro -shot high -pressure average machine. The reactors of 200 μm and 87 μm were jointly used. The reaction pressure was 150MPa and the cycle shear treatment was 6 times.

[0024] Step 4: After a sufficient dispersed carbon n...

Embodiment 2

[0026] Step 1: Soluble hydroxylopyolinel cellulose in a thickener into the cellulose nano -fiber -fiber solution, and the mass of the thickener accounts for 4%of the mixed material (dry state).In order to avoid subsequent high -speed cutting process, the material is blocked in the reaction cavity, and the deodorization water is added under the stirring conditions to dilute the above mixed solution to 0.3WT%.

[0027] Step 2: Add 6WT's carbon nanotubes to the diluted state of cellulose nano -fiber / hydroxypropylene methyl cellulose mixed solution, and the mechanical stirring is initially dispersed with carbon nanotubes.

[0028] Step 3: High -speed homogeneous mechanical shear treatment.The preliminary decentralized hybrid solution was cut and scattered in the micro -firing high -pressure average. The 200 μm and 87 μm reactors were jointly used. The reaction pressure was 150MPa and the cycle shear treatment was 8 times.

[0029] Step 4: After a sufficient dispersed carbon nanotuba / n...

Embodiment 3

[0031] Step 1: Soluble hydroxylopyolinel cellulose in a thickener into a cellulose nano -fiber -fiber -fiber solution, and the quality of the thickened agent accounts for 5%of the mixed material (dry state).In order to avoid subsequent high -speed cutting process, the material is blocked in the reaction cavity, and the deodorization water is added under the stirring conditions to dilute the above mixed solution to 0.2WT%.

[0032] Step 2: Add 7WT%of carbon nanotubes to the diluted state of the cellulose nano -fiber / hydroxypropylene methyl cellulose mixed solution, and the mechanical stirring is initially dispersed with carbon nanotubes.

[0033] Step 3: High -speed homogeneous mechanical shear treatment.The preliminary decentralized hybrid solution was cut and scattered in the micro -firing high -pressure average. The 200 μm and 87 μm reactors were jointly used. The reaction pressure was 150MPa and the cycle shear treatment was 8 times.

[0034] Step 4: After a sufficient disperse...

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Abstract

The invention discloses a preparation method of biomass nanofiber conductive paper, which adds high-conductivity carbon nanotubes into a viscous nanofiber / cellulose thickener mixed solution, and uses high-speed homogenization machinery to shear the damaged carbon nanotubes The outer structure of the cellulose nanofibril fiber makes it polar and binds to the hydroxyl groups on the surface of the cellulose nanofibril fiber. At the same time, the agglomeration of carbon nanotubes is blocked by the high viscosity of the nanofiber / cellulose thickener solution to make them uniformly and stably dispersed. The production process of the biomass cellulose conductive paper obtained by this method is simple and easy to control, green and environmentally friendly, and the cost is reasonable. At the same time, cellulose nanofibrils with large specific surface area and natural network structure can absorb and bind more carbon nanotubes. The composite conductive paper has low impedance, stable conductivity, high mechanical strength, and good thermal stability. It can be widely used in Multi-dimensional conductive materials, unconventional conductive materials, multifunctional energy storage materials, new electromagnetic shielding and electromagnetic sensing materials and many other fields.

Description

Technical field [0001] The present invention involves the preparation method of biomass nanopal fiber conductive materials, which is specifically for preparation of biomass nanoscope electrical paper. Background technique [0002] Plant fiber conductivity paper not only has good conductive and electromagnetic shielding effects, but also has the advantages of rich resources, ecological and environmental protection, low cost and other advantages. In recent years, it has been favored as a new type of conductive material.However, plant fiber itself cannot conduct electricity, and it is necessary to introduce conductive polymers or inorganic conductive materials to build a charge -conducting diameter to achieve the conductive function of plant fiber.Carbon nanotubes (single walls or multi -wall) have excellent conductive performance and natural mesh structure, which can create high -efficiency conductive diameter, and has become the best material for preparing plant fiber electrical p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21F13/00
Inventor 卿彦吴义强蔡智勇张新荔李贤军李新功
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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