Composite conductive paper of carbon fiber

A carbon fiber paper, composite conductive technology, applied in the directions of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material treatment, fiber dispersant addition, etc. distribution and porosity, to achieve the effect of improving dispersibility, good electrical conductivity, and improved electrical conductivity

Inactive Publication Date: 2007-07-25
DONGHUA UNIV
View PDF0 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the conventional technology of carbon paper preparation, the dispersant is polyacrylamide. When beating in the beater, due to high-speed shearing, it is easy to lose the dispersion effect, thereby affecting the pore size and its distribution and porosity.
The commonly used binder is polyvinyl alcohol, which is non-conductive, because a small part of the binder will definitely remain in the carbon paper during carbonization, which will seriously reduce the conductivity of the carbon paper.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The acrylonitrile-based carbon fiber is cut, and its length distribution is 2mm20%, 4mm20%, 6mm20%, 8mm20%, 10mm20%. The acrylonitrile-based carbon fiber is 96% of the mass fraction of the composite (acrylonitrile-based carbon fiber and other carbon materials) Graphite is 4% of composite mass fraction, dispersant is methyl cellulose and sodium alginate (ratio is 1: 4), and its consumption is 1% of composite mass fraction, binder is polyvinyl alcohol and polyvinyl alcohol Aniline (ratio is 1: 4), its mass fraction is 10% of composite, simultaneously dispersing agent and binding agent are respectively made into solution, and concentration is 5%;

[0023] Carbon fiber paper can be produced by conventional wet papermaking technology;

[0024] The carbon fiber paper was dried in a vacuum oven for 2 hours, and then treated with polytetrafluoroethylene emulsion (PTFE) with a concentration of 6%; the obtained carbon fiber paper was carbonized under nitrogen protection, and the ...

Embodiment 2

[0028] The acrylonitrile-based carbon fiber is cut, and its length distribution is 1mm20%, 3mm20%, 5mm20%, 7mm20%, 9mm20%, and carbon fiber is 95% of the composite mass fraction; carbon microspheres and C 60 5% of the mass fraction of the composite, the dispersant is polyacrylamide and sodium alginate (ratio 1:4), its consumption is 1% of the mass fraction of the composite, the binder is water-soluble phenolic resin and polyaniline ( The ratio is 1:4), and its dosage is 10% of the composite, and simultaneously the dispersant and the binder are respectively formulated into solutions with a concentration of 8%;

[0029] Carbon fiber paper can be produced by using the principle of conventional wet papermaking;

[0030] Dry the carbon fiber paper in a vacuum oven for 2 hours, and then treat it with a polytetrafluoroethylene emulsion (PTFE) with a concentration of 16%; carbonize the obtained carbon fiber paper under nitrogen protection, and the carbonization temperature is 1400°C, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
electrical resistivityaaaaaaaaaa
lengthaaaaaaaaaa
electrical conductivityaaaaaaaaaa
Login to view more

Abstract

The present invention discloses a composite conductive carbon fiber paper. Its preparation process includes the following steps: using acrylonitrile carbon fiber and other carbon material as raw material, adopting polyphenylamine, conventional polyvinyl alcohol and water-soluble phenolic resin and mixing them, and using their mixture as adhesive, the polyphenylamine is conductive high-molecular polymer; mixing sodium alginate and conventional dispersing agent; adopting wet-process paper-making technique to make paper; vacuum drying the obtained carbon paper, then using Teflon emulsion whose concentration is 5%-20% to make treatment; finally, introducing nitrogen gas and making carbonization, carbonization temperature is higher than 1000 deg.C, so as to obtain the invented composite conductive carbon fiber paper. Said composite conductive carbon fiber paper mainly is used in fuel cell field.

Description

technical field [0001] The invention relates to a composite conductive carbon fiber paper, in particular to a composite conductive carbon fiber paper containing a conductive adhesive and a novel dispersant and a preparation method thereof. Background technique [0002] At present, Shanghai has formulated a development plan of "100,000,000,000,000" fuel cell vehicles for the next five years. According to the "Hundred, Thousand, Ten Thousand" plan formulated by Shanghai, by the end of 2007, Shanghai will complete the necessary certification tests for the development and commercial demonstration of a new generation of fuel cell cars. Beginning in 2008, 100 fuel cell cars will be produced in small batches, and a demonstration fleet will be formed; before February 2008, the trial production of 100 fuel cell cars will be completed, and its models are expected to include Shanghai's own brand cars, Shanghai Volkswagen Passat, etc. In 2009, 1,000 fuel cell cars will be produced and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/50D21H21/08D21H21/06
Inventor 王华平周兆云王朝生张传雄王强华
Owner DONGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap