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Absorptive-type electromagnetic shielding paper and preparation method thereof

An electromagnetic shielding and absorbing technology, which is applied in paper, papermaking, textiles and papermaking, etc., can solve the problems of high cost of carbon fiber electromagnetic shielding paper, low efficiency of high-frequency electromagnetic wave shielding, and inability to suppress secondary reflection clutter. Prospects for engineering and economic benefits, low cost, and the effect of suppressing secondary reflection clutter

Inactive Publication Date: 2016-03-16
CHINA BUILDING MATERIALS ACAD
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  • Abstract
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Problems solved by technology

The carbon fiber shielding paper has a good electromagnetic shielding effect, but has the following disadvantages: (1) The carbon fiber is a graphite turbostratic structure, composed of C-C non-polar covalent bonds, with few surface active groups and strong hydrophobicity, so it needs to be used in large quantities Dispersants can only be dispersed, resulting in higher cost of carbon fiber electromagnetic shielding paper; (2) carbon fiber electromagnetic shielding paper cannot suppress secondary reflection clutter, high-frequency electromagnetic wave shielding efficiency is low, and its application is limited

Method used

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  • Absorptive-type electromagnetic shielding paper and preparation method thereof

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Embodiment Construction

[0024] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, characteristics and methods of the absorbing electromagnetic shielding paper proposed according to the present invention and its preparation method are described below in conjunction with the preferred embodiments. Its effect is described in detail below. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0025] An absorbing electromagnetic shielding paper proposed by an embodiment of the present invention includes a composite wave absorbing agent component and a skeleton component, the mass percentage of the composite wave absorbing agent component is 50%-60%, and the skeleton The mass perce...

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Abstract

The invention relates to absorptive-type electromagnetic shielding paper and a preparation method thereof. The absorptive-type electromagnetic shielding paper comprises a composite absorbent component and a skeleton component, wherein the composite absorbent component is prepared from the following raw materials in percentage by mass: 12%-48% of nickel powder, 8%-32% of silicon carbide and 20%-80% of ferrite / glass fiber; and the skeleton component is a plant fiber. The absorptive-type electromagnetic shielding paper provided by the invention is capable of absorbing and suppressing secondary reflection clutter, and is high in high-frequency electromagnetic shielding effectiveness, simple in preparation technology and relatively low in cost.

Description

technical field [0001] The invention relates to an electromagnetic shielding paper and a preparation method thereof, in particular to an absorbing electromagnetic shielding paper and a preparation method thereof. Background technique [0002] Nowadays, the problems of electromagnetic pollution endangering the human body are becoming more and more serious, and it is imminent to develop and produce efficient and lightweight electromagnetic shielding and absorbing materials. As a high-performance functional paper, electromagnetic shielding paper can be used for electromagnetic shielding of high-precision and high-sensitivity electronic equipment. [0003] At present, the common electromagnetic shielding paper is mainly carbon fiber electromagnetic shielding paper, including carbon fiber, plant fiber and conductive particles. The main step is to mix carbon fiber and plant fiber, and add a dispersant to make cotton pulp. After removing slag, mix and disperse evenly with conductiv...

Claims

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Application Information

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IPC IPC(8): D21H15/12D21H13/40D21H13/36D21H17/00D21H17/67D21H21/14
CPCD21H15/12D21H13/36D21H13/40D21H17/00D21H17/67D21H17/74D21H21/143
Inventor 贾菲徐铭鲍红权张帆崔凯
Owner CHINA BUILDING MATERIALS ACAD
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