High-strength carbon fiber shielding paper and preparation method thereof

A high-strength carbon fiber and carbon fiber technology, applied in special paper, synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, etc., can solve the problem of narrow frequency range of shielded electromagnetic waves, low strength of carbon fiber paper, and poor shielding performance and other problems, to achieve the effect of wide electromagnetic wave frequency band, smooth surface and high mechanical strength

Inactive Publication Date: 2014-04-16
TAICANG PAIOU TECH CONSULTING SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the disadvantages of the existing carbon fiber paper such as low strength, poor shielding performance, and narrow electromagnetic wave frequency band for shielding, and provide a high-strength carbon fiber shielding paper and its preparation method. Can be widely used in energy, electromagnetic wave shielding, anti-static packaging, adsorption separation, aerospace and other fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 80 parts of carbon fiber and 15 parts of plant fiber are added to the beater for dispersion, and water is used as the dispersant and solvent to dissociate the carbon fiber and plant fiber raw materials into cotton pulp;

[0026] The cotton pulp and white water solution are transported to the slurry mixing tank for stirring and slag removal treatment, the solid content in the slurry is controlled at 0.3% (weight), the viscosity is controlled at 8CP, the pH is controlled at 7, and the gas content is controlled at 6%;

[0027] Add 5 parts of conductive powder into the high-speed mixer to fully disperse;

[0028] Transport the conductive powder solution and cotton pulp solution to the slurry mixing tank for uniform dispersion;

[0029] The uniformly dispersed mixed slurry is transported to the filter screen of the twin-wire press machine for papermaking, the thickness is controlled at 0.1mm, and the papermaking result is vacuum suctioned to remove water and pressed to make ...

Embodiment 2

[0034] 75 parts of carbon fiber and 17 parts of plant fiber are added to the beater for dispersion, and water is used as the dispersant and solvent to dissociate the carbon fiber and plant fiber raw materials into cotton pulp;

[0035] The cotton pulp and white water solution are transported to the pulp mixing tank for stirring and slag removal, the solid content in the slurry is controlled at 0.25% (weight), the viscosity is controlled at 10CP, the pH is controlled at 7, and the gas content is controlled at 7%;

[0036] Add 8 parts of conductive powder into the high-speed mixer to fully disperse;

[0037] Transport the conductive powder solution and cotton pulp solution to the slurry mixing tank for uniform dispersion;

[0038] The uniformly dispersed mixed slurry is transported to the filter screen of the twin-wire press machine for papermaking, the thickness is controlled at 0.2mm, and the papermaking result is vacuum suctioned to remove water and squeezed to obtain a paper...

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Abstract

The invention discloses high-strength carbon fiber shielding paper and a preparation method thereof. The shielding paper comprises carbon fibers, plant fibers and conductive particles, wherein the carbon fibers and the plant fibers are randomly and uniformly distributed in a plane, micron-sized holes are formed among the plurality of fibers to form a three-dimensional reticulated structure, and the conductive particles are existent between the surfaces and the holes of the fibers; the carbon fibers are 1 mm to 20 mm in length; the plant fibers comprise wood fibers, grass plant fibers, bast fibers, seed hair fibers or combination of the wood fibers, the grass plant fibers, the bast fibers and the seed hair fibers; the conductive particles comprise carbon black with the particle size of 1 nm to 100 nm, silver coated copper powder, conductive rubber or combination of the carbon black, the silver coated copper powder and the conductive rubber. The shielding paper has the advantages of uniform porous structure and excellent ventilation property, shielding performance and mechanical strength; in addition, air filter paper can be used to the fields of energy resources, electromagnetic wave shielding, antistatic packaging, adsorption separation, aerospace and the like.

Description

technical field [0001] The invention relates to a high-strength carbon fiber shielding paper and a preparation method thereof. Background technique [0002] Carbon fiber is a new type of carbon material with a carbon content of more than 93% obtained through high-temperature carbonization at 1300-1600°C. It has low density, high strength, chemical corrosion resistance, radiation resistance, high electrical conductivity, high thermal conductivity, ablation resistance, and small thermal expansion. A series of excellent characteristics, such as good physiological compatibility, have attracted the attention of the industry, and are known as the fourth type of industrial materials. In practical applications, carbon fiber is rarely used directly, and most of it is made into intermediate products or composite materials after deep processing. Conductive paper plays an important role in the fields of anti-static and radiation protection of electronic products. The functional charac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/00D21H13/50D21H15/10D21H27/00
Inventor 陈照峰李承东
Owner TAICANG PAIOU TECH CONSULTING SERVICE
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