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Carbon fiber paper with conductive network enhanced by carbon black and preparation method of carbon fiber paper

A carbon fiber paper and conductive network technology, applied in the field of papermaking, can solve the problem that carbon fiber paper cannot meet the heating rate and other problems

Inactive Publication Date: 2022-03-11
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the above electrically heated carbon fiber paper is far from meeting the needs of aviation deicing, floor heating, and industrial production for electric heating paper with a large heating rate, high temperature resistance level, and strong environmental adaptability.

Method used

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  • Carbon fiber paper with conductive network enhanced by carbon black and preparation method of carbon fiber paper
  • Carbon fiber paper with conductive network enhanced by carbon black and preparation method of carbon fiber paper
  • Carbon fiber paper with conductive network enhanced by carbon black and preparation method of carbon fiber paper

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preparation example Construction

[0035] A kind of preparation method of the carbon fiber paper of the present invention strengthens conductive network with carbon black, comprises the following steps:

[0036] Step 1, prepare a slurry with uniform fiber dispersion through a standard fiber disintegrator; the slurry with uniform fiber dispersion is obtained as follows;

[0037] Step 1a, mix solid A and solvent A according to the ratio of 1.884g: 20ml to obtain solution A, solid A is a mixture of carbon fiber, aramid fibrid, and carbon black, and solvent A is a dispersant polyethylene oxide (PEO) aqueous solution, Made by adding 0.5g of PEO to 100ml of water. The mass fraction of each component of solid A is: carbon fiber: 40%-80%; aramid fibrid: 10%-50%; carbon black: 10%. The length of the carbon fiber is 6mm, and the diameter is 7 μm; the length of the aramid fibrids is 4mm;

[0038] Step 1b, add solution A to deionized water according to the ratio of 20ml:1000ml to obtain mixed system A;

[0039] Step 1c,...

Embodiment 1

[0049] Step 1, prepare a slurry with uniform fiber dispersion through a standard fiber disintegrator; the slurry with uniform fiber dispersion is obtained as follows;

[0050] Step 1a, mix 1.884g of solid A and 20ml of solvent A to obtain solution A, solid A is a mixture of carbon fiber, aramid fibrid, and carbon black, and solvent A is a PEO aqueous solution with a concentration of 0.005g / mL. Wherein the mass fraction of each component of the solid A is: carbon fiber: 80%; aramid fibrid: 10%; carbon black: 10%. The carbon fiber has a length of 6mm and a diameter of 7 μm; the length of the aramid precipitated fiber is 4mm;

[0051] Step 1b, adding solution A to 1000ml deionized water to obtain mixed system A;

[0052] Step 1c, use a standard fiber deflatter to stir the mixed system A, the stirring speed is 300r / min, and the stirring time is 10min.

[0053] Step 2, pouring the slurry with evenly dispersed fibers into a sheet forming machine for sheet forming to obtain a carbo...

Embodiment 2

[0061] Step 1, prepare a slurry with uniform fiber dispersion through a standard fiber disintegrator; the slurry with uniform fiber dispersion is obtained as follows;

[0062] Step 1a, mix solid A and solvent A in a ratio of 1.884g solid A and 20ml to obtain solution A, solid A is a mixture of carbon fiber, aramid fibrid, and carbon black, and solvent A is PEO with a concentration of 0.005g / mL aqueous solution. Wherein the mass fraction of each component of the solid A is: carbon fiber: 60%; aramid fibrid fiber: 30%; carbon black: 10%. The carbon fiber has a length of 6mm and a diameter of 7 μm; the length of the aramid precipitated fiber is 4mm;

[0063] Step 1b, adding solution A to 1000ml deionized water to obtain mixed system A;

[0064] In step 1c, use a standard fiber deflaker to stir the mixed system A, the stirring speed is 300r / min, and the stirring time is 8min.

[0065] Step 2, pouring the slurry with evenly dispersed fibers into a sheet forming machine for sheet...

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Abstract

The invention provides carbon fiber paper with a conductive network enhanced by carbon black and a preparation method thereof, and the method comprises the following steps: step 1, uniformly dispersing carbon fibers, aramid fibrid and carbon black in a polyoxyethylene aqueous solution according to a ratio of (40-80): (10-50): 10 to obtain a mixed slurry; step 2, molding the mixed pulp to obtain a wet paper web of the carbon fiber paper, and sequentially squeezing and drying the wet paper web of the carbon fiber paper to obtain raw paper of the carbon fiber paper; and step 3, dipping raw paper of the carbon fiber paper in the phenolic resin solution, airing, and hot-pressing at 150-160 DEG C to obtain the carbon fiber paper with the conductive network enhanced by the carbon black. The carbon fiber electric heating paper with high heating rate and good temperature resistance is prepared by introducing aramid fibrid as dispersion forming fiber and carbon black as a three-dimensional network structure bridge.

Description

technical field [0001] The invention belongs to the field of papermaking, in particular to a carbon fiber paper with carbon black reinforced conductive network and a preparation method thereof. Background technique [0002] Carbon fiber is a special fiber composed of carbon elements. It has physical and chemical properties such as low density, high rigidity, high temperature resistance, electrical conductivity, thermal conductivity and corrosion resistance, and exhibits high strength along the fiber axis. Using carbon fiber as the main raw material, a lightweight thin sheet material with a network structure can be prepared through the wet forming process of papermaking, also known as carbon fiber paper. Carbon fiber paper can be used in electromagnetic shielding, flexible friction, electric heating, etc. Due to the stable properties of carbon fiber paper, and its advantages of safety, high efficiency, and long life, it has also been widely used in rail transportation, natio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/50D21H13/26D21H17/00D21H17/53D21H17/48D21H17/06D21H21/14
CPCD21H27/00D21H13/50D21H13/26D21H17/00D21H17/53D21H17/48D21H17/06D21H21/14
Inventor 陆赵情郭子瞻贾峰峰杨凯伦花莉江明徐晓旭董佳玥
Owner SHAANXI UNIV OF SCI & TECH
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