Preparation method for full carbon fibre composite paper

A technology of carbon fiber and composite paper, which is applied in special paper, synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, etc., can solve problems such as moisture resistance limitations, reduce surface tension, enhance binding force, improve The effect of the dispersion effect

Inactive Publication Date: 2017-12-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it contains a certain amount of plant fibers, its heat resistance, moisture resistance and other properties have been greatly limited.

Method used

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  • Preparation method for full carbon fibre composite paper
  • Preparation method for full carbon fibre composite paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Cotton fibers are beaten to a beating degree of 40 ° SR with a PFI mill;

[0041] (2) The polyacrylonitrile-based carbon fiber with a length of 5 mm and a diameter of 5 μm was impregnated with acetone for 40 min;

[0042] (3) Soak the carbon fiber through the above-mentioned treatment with concentrated nitric acid for 40min and wash it for later use;

[0043] (4) ultrasonically treat the carbon fiber after the above treatment with coupling agent KH-550 for 1 h, and the mass fraction of the KH-550 solution is 10%; ..

[0044] (5) Soak the cotton fibers after the beating treatment in step (1) with coupling agent KH-550 for 1h, and the mass fraction of the KH-550 solution is 10%;

[0045] (6) above-mentioned carbon fiber and cotton fiber are placed in deflagging machine together and add water and decompose, the mass fraction ratio of carbon fiber and plant fiber is 40% and 60%;

[0046] (7) Polyethylene oxide (PEO) is added in the deflagging machine and deflagrated t...

Embodiment 2

[0051] (1) Cotton fibers are beaten to a beating degree of 45 ° SR with a PFI mill;

[0052] (2) The polyacrylonitrile-based carbon fiber with a length of 6 mm and a diameter of 5 μm was impregnated with acetone for 50 min;

[0053] (3) soak the carbon fiber through the above-mentioned treatment with concentrated sulfuric acid for 50min and wash it for later use;

[0054] (4) ultrasonically treat the carbon fiber after the above treatment with coupling agent KH-560 for 1 h, and the mass fraction of the KH-560 solution is 10%;

[0055] (5) Soak the cotton fibers after the beating treatment in step (1) with coupling agent KH-550 for 1h, and the mass fraction of the KH-550 solution is 10%;

[0056] (6) above-mentioned carbon fiber and cotton fiber are placed in deflagging machine together and add water and decompose, the mass fraction ratio of carbon fiber and plant fiber is 45% and 55%;

[0057] (7) Add anionic polyacrylamide (APAM) into the deflagging machine and decompose to...

Embodiment 3

[0062] (1) beating the cotton fiber with a PFI mill until the degree of beating is 50 ° SR;

[0063] (2) The polyacrylonitrile-based carbon fiber with a length of 4 mm and a diameter of 5 μm was impregnated with acetone for 35 minutes;

[0064] (3) Soak the above-mentioned carbon fiber with concentrated sodium hydroxide solution for 45 minutes and wash it for later use;

[0065] (4) ultrasonically treat the above-mentioned treated carbon fibers with coupling agent KH-550 for 1.5 h, and the mass fraction of the KH-550 solution is 10%;

[0066] (5) Soak the cotton fibers after the beating treatment in step (1) with coupling agent KH-550 for 1h, and the mass fraction of the KH-550 solution is 10%;

[0067] (6) above-mentioned carbon fiber and cotton fiber are placed in deflagging machine together and add water and decompose, the mass fraction ratio of carbon fiber and plant fiber is 50% and 50%;

[0068] (7) polyvinyl alcohol (PVA) is added in the disintegrating machine to disi...

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Abstract

The invention discloses a preparation method for full carbon fibre composite paper. The method comprises the following steps: pulping plant fibres; performing dipping treatment on carbon fibres with an organic solvent; treating the carbon fibres with a concentrated acid or a concentrated alkali; performing ultrasonic treatment on the carbon fibres which are treated with the acid or the alkali in a first coupling agent; soaking the plant fibres, which are subjected to pulping treatment, with a second coupling agent; adding water and defibering the treated carbon fibres and the treated plant fibres in a fluffer together; adding a dispersing agent into the fluffer and defibering the dispersant and the fibres together; and manufacturing paper with pulp and forming the paper pulp by using a Kothen method automatic paper making system, and squeezing and drying to obtain synthesized fibres; carbonating the obtained synthesized fibres in the environment with the protection of high-temperature nitrogen. The full carbon fibre composite paper prepared by the preparation method has relatively high finished paper uniformly, high mechanical strength, relatively high heat resistance and high electrical conductivity, and solves the difficult problem that the full carbon fibre paper cannot be made by adopting a conventional method.

Description

technical field [0001] The invention relates to a method for preparing all-carbon fiber composite paper, which is characterized in that the all-carbon fiber composite paper has good paper evenness, mechanical properties, heat resistance and electrical conductivity, and has broad application prospects in the aerospace field. Background technique [0002] Carbon fiber has excellent performance characteristics such as low density, high strength, high temperature resistance, chemical corrosion resistance, electrical conductivity, and good thermal conductivity. It is often processed into various high-performance composite materials, such as carbon fiber paper. The surface of carbon fiber is a turbostratic graphite structure, with obvious grooves and gaps, and the surface is relatively rough. The carbon-carbon structure between its molecules is mostly connected by non-polar covalent bonds, resulting in less active groups on the surface of carbon fibers and no hydrophilicity, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/50D21H15/12D21H21/08D21H25/04
CPCD21H13/50D21H15/12D21H21/08D21H25/04D21H27/00
Inventor 刘德桃欧阳豪路朋博林美燕苏灵峰李军
Owner SOUTH CHINA UNIV OF TECH
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