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Preparation method of carbon nanotube electromagnetic wave shielding paper

A technology of carbon nanotubes and electromagnetic waves, applied in the fields of chemistry and functional materials, can solve the problems of complex preparation process and high cost of raw material carbon nanotubes

Inactive Publication Date: 2013-08-28
UNIV OF SHANGHAI FOR SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in its embodiment 1, the mass ratio of carbon nanotubes and rice paper is 1:1, namely carbon nanotubes account for 50% of the total mass of paper, if it is used for electromagnetic wave shielding on a large scale, the cost of raw material carbon nanotubes is too high
And wet papermaking requires specific papermaking equipment, and the preparation process is more complicated

Method used

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  • Preparation method of carbon nanotube electromagnetic wave shielding paper
  • Preparation method of carbon nanotube electromagnetic wave shielding paper
  • Preparation method of carbon nanotube electromagnetic wave shielding paper

Examples

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Effect test

preparation example Construction

[0024] (1) Preparation of carbon nanotube ink

[0025] Add carbon nanotubes to the solvent, add appropriate resin and surfactant, ultrasonically disperse and then magnetically stir evenly to generate carbon nanotube ink.

[0026] The mass percentage of the solvent is 10-95%, the mass percentage of the carbon nanotube is 0.1-20%, the mass percentage of the resin is 2-50%, and the mass percentage of the surfactant is 0.1-5%.

[0027] As used in the present invention, the carbon nanotubes are selected from one or more of single-walled carbon nanotubes, double-walled carbon nanotubes or multi-walled carbon nanotubes. As known to those of ordinary skill in the art, the carbon nanotubes can be obtained by conventional methods in the art such as chemical vapor deposition, arc discharge method, laser ablation method, solid phase pyrolysis method, glow discharge method or gas combustion method etc., and can also be purchased through commercial channels.

[0028] The solvent can be wa...

Embodiment 1

[0052] Mix carbon nanotubes and other raw materials, and make carbon nanotube ink after magnetic stirring. The content of each component is as follows:

[0053]

[0054] Then, the carbon nanotube ink is added into the ink cartridge of the inkjet printing device, and the carbon nanotube electromagnetic wave shielding paper is printed out by the inkjet printing method. The line width of the grid pattern is 40 μm, and the width of the blank portion is 60 μm. After the printed paper is dried, decorated, etc., the paper with electromagnetic wave shielding performance is obtained.

Embodiment 2

[0056] Mix carbon nanotubes and other raw materials, and make carbon nanotube ink after magnetic stirring. The content of each component is as follows:

[0057]

[0058] Then, the carbon nanotube ink is added into the ink cartridge of the inkjet printing device, and the carbon nanotube electromagnetic wave shielding paper is printed out by the inkjet printing method. The line width of the grid pattern is 100 μm, and the width of the blank portion is 70 μm. After the printed paper is dried, decorated, etc., the paper with electromagnetic wave shielding performance is obtained.

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Abstract

The invention relates to a method for preparing carbon nanotube electromagnetic wave shielding paper, which comprises the following steps: (a) adding a carbon nanotube into solvent, then adding resin and surfactant, performing dispersion treatment, and uniformly stirring, thus preparing carbon nanotube ink; and (b) by taking the carbon nanotube ink as a raw material, designing a printed mesh line pattern according to the requirements for shielding performance, printing carbon nanotube electromagnetic wave shielding paper in an ink jet printing mode, drying, and finishing, wherein the carbon nanotube ink contains 10-95wt% of solvent, 0.1-20wt% of carbon nanotube, 2-50wt% of resin and 0.1-5wt% of surfactant; the line width W1 of the mesh line pattern is 1-500mu m, the width W2 of the blank part is 1-500mu m, and the area ratio of the mesh lines is 20-99.9%. The method provided by the invention can be used for preparing electromagnetic wave shielding paper, and has the advantages of simple process and raw material saving; and the shielding paper is wide in shielding wave band, adjustable in property, portable and easy to use, and can be widely used hopefully.

Description

technical field [0001] The invention belongs to the field of chemistry and functional materials, and relates to a preparation method of electromagnetic wave shielding paper. Background technique [0002] With the extensive use of electronic appliances (such as precision instruments, mobile phones, computers, microwave ovens, etc.), there is increasingly serious electromagnetic pollution in modern life. Electromagnetic pollution is recognized as one of the four major pollutions. It is not only harmful to the human body, but also interferes with precision instruments and even fails to operate normally. In order to reduce the harm of electromagnetic waves, the best way is to use electromagnetic wave shielding materials to shield it. [0003] An ideal electromagnetic wave shielding material should have the characteristics of light weight, thin thickness, wide frequency band for absorbing electromagnetic waves, and strong environmental adaptability, which can effectively shield ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/22C09D11/02C09D11/08C09D11/10C09D11/14C09D11/38
Inventor 徐恒
Owner UNIV OF SHANGHAI FOR SCI & TECH
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