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Nanocellulose composite film and preparation method and application thereof

A technology of nano-cellulose and composite film, which is applied in the direction of cellulose/protein conjugated artificial filament, fiber chemical characteristics, textiles and papermaking, etc. Low coefficient and other problems, to achieve the effect of improving mechanical properties and heat resistance, good heat dissipation, and experimental safety

Inactive Publication Date: 2019-07-26
SHANGHAI NAXU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low intrinsic thermal conductivity of cellulose molecules and the microporous structure of the nanocellulose film, the thermal conductivity of the film is low, which will affect the heat dissipation performance of electronic equipment and components.

Method used

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  • Nanocellulose composite film and preparation method and application thereof
  • Nanocellulose composite film and preparation method and application thereof
  • Nanocellulose composite film and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A method for preparing a nanocellulose composite membrane, characterized in that the composite membrane is a nanocellulose / fluorinated graphene / polyethylenedioxythiophene composite membrane, and the nanocellulose and fluorinated Graphene and PEDOT compound, comprise the following steps:

[0028] (1) Add cellulose to the tetramethylpiperidine nitrogen oxide (TEMPO) catalytic system, adjust the pH to 9.0 for reaction, and obtain nanocellulose suspension after the reaction;

[0029] (2) Put nano-zinc oxide into the acrylic resin emulsion for dispersion, wherein the mass ratio of nano-zinc oxide to the acrylic resin emulsion is 10:100, heat the dispersion to 60°C, and then add silane coupling agent KH-550 reacts with sodium citrate for 3 hours, wherein the mass ratio of nano-zinc oxide to sodium citrate is 100:1, and the mass ratio of nano-zinc oxide to silane coupling agent KH-550 is 100:4 ;

[0030] (3) Add fluorinated graphite to the solvent to obtain a fluorinated gra...

Embodiment 2

[0035] A preparation method of nanocellulose composite film, comprising the steps of:

[0036] (1) Add cellulose to the tetramethylpiperidine nitrogen oxide (TEMPO) catalytic system, adjust the pH to 9.0 for reaction, and obtain nanocellulose suspension after the reaction;

[0037] (2) Put nano-zinc oxide into the acrylic resin emulsion for dispersion, wherein the mass ratio of nano-zinc oxide to the acrylic resin emulsion is 15:100, heat the dispersion to 60°C, and then add silane coupling agent KH-550 reacts with sodium edetate for 3 hours, wherein the mass ratio of nano-zinc oxide to sodium citrate is 100:2, and the mass ratio of nano-zinc oxide to silane coupling agent KH-550 is 100 :5;

[0038] (3) Add fluorinated graphite to the solvent to obtain a fluorinated graphite suspension with a concentration of 1 mg / mL; then add 1,4-diaminocyclohexanediamine monomer to the fluorinated graphite suspension and place in a closed The reaction kettle was subjected to a hydrothermal...

Embodiment 3

[0043] A preparation method of nanocellulose composite film, comprising the steps of:

[0044] (1) Add cellulose to the tetramethylpiperidine nitrogen oxide (TEMPO) catalytic system, adjust the pH to 9.0 for reaction, and obtain nanocellulose suspension after the reaction;

[0045] (2) Put nano-zinc oxide into the acrylic resin emulsion for dispersion, wherein the mass ratio of nano-zinc oxide to the acrylic resin emulsion is 20:100, heat the dispersion to 60°C, and then add silane coupling agent KH-550 reacts with sodium citrate for 1 to 5 hours, wherein the mass ratio of nano-zinc oxide to sodium citrate is 100:3, and the mass ratio of nano-zinc oxide to silane coupling agent KH-550 is 100: 6;

[0046] (3) Add fluorinated graphite to the solvent to obtain a fluorinated graphite suspension with a concentration of 1 mg / mL; then add 1,4-diaminocyclohexanediamine monomer to the fluorinated graphite suspension and place in a closed The reaction kettle was placed in a hydrotherm...

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Abstract

The invention relates to nanocellulose composite film and a preparation method and application thereof. The nanocellulose composite film is nanocellulose / graphene fluoride / poly(3,4-ethylenedioxythiophene) composite film. The preparation method comprises adding cellulose into 2,2,6,6-tetramethylpiperidine nitrogen oxide, adding nano zinc oxide into acrylic resin emulsion, and adding silane coupling agent KH-550 and organic acid sodium; adding graphite fluoride into a solvent, adding 1,4-diaminocyclohexane diamine monomer, carrying out hydrothermal intercalation in a closed reactor, and distilling in vacuum; dropwise adding into PEDOT (poly(3,4-ethylenedioxythiophene)) slowly to form cellulose-based film, and drying to obtain the nanocellulose / graphene fluoride / poly(3,4-ethylenedioxythiophene) composite film. By combining nanocellulose with graphene fluoride and PEDOT by means of electrospinning, conductivity of the cellulose film can be further improved, and mechanical properties andheat resistance of the cellulose film can be improved.

Description

technical field [0001] The present invention relates to a preparation method, product and application of a nanocellulose composite film, in particular to a preparation method, product and application of a nanocellulose / fluorinated graphene / polyethylenedioxythiophene composite film, belonging to field of energy materials. Background technique [0002] Cellulose is the most widely distributed and most abundant polymer material in nature. In recent years, with the decline of oil and coal reserves and the increasing emphasis on environmental pollution, the development and utilization of cellulose has received more and more attention. [0003] With the development of society, lithium-ion batteries have attracted much attention. Lithium-ion battery is currently the most ideal rechargeable battery in the world. It not only has the advantages of high energy density, long cycle life, no memory effect and low pollution. With the advancement of technology, lithium-ion batteries will...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/728D01F8/02D01F8/10D01F1/10D01F8/16
CPCD01F1/10D01F8/02D01F8/10D01F8/16D04H1/4382D04H1/728H01M50/403H01M50/411H01M50/44Y02E60/10
Inventor 何丹农吴晓燕张芳张道明王亚坤卢玉英金彩虹
Owner SHANGHAI NAXU IND