Split-ring resonator-like electromagnetic shielding multilayer composite fabric and preparation method thereof

A split resonant ring, electromagnetic shielding technology, applied in the fields of magnetic/electric field shielding, electrical components, antennas, etc., can solve the problems of reduced shielding performance of fabrics, adverse effects on human body and instruments, etc., to achieve improved shielding effectiveness, good shielding effectiveness, reduced leaked effect

Pending Publication Date: 2021-12-21
XI'AN POLYTECHNIC UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of split resonant ring electromagnetic shielding multi-layer composite fabric, which solves the problem that the shielding performance of the fabric is greatly reduced du

Method used

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  • Split-ring resonator-like electromagnetic shielding multilayer composite fabric and preparation method thereof
  • Split-ring resonator-like electromagnetic shielding multilayer composite fabric and preparation method thereof
  • Split-ring resonator-like electromagnetic shielding multilayer composite fabric and preparation method thereof

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[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] A type of open resonant ring electromagnetic shielding multilayer composite fabric, such as figure 1 As shown, including the front layer 1, at least one intermediate absorbing layer 3 and the on-plane layer 2, the front layer 1 is electromagnetic wave incident layer, and the intermediate absorbing layer 3 is electromagnetic wave reflective layer. The frequency band electromagnetic wave absorption function is more than -5dB, such as the electromagnetic wave reflectance, such as figure 2 As shown, the intermediate absorbing layer 3 is arranged in a plurality of open resonance ring 8, and the plurality of open resonance loops 8 are adhered to between the front layer 1 and the back layer 2 by bonding.

[0043] The front layer 1 is a normal fabric or a lower shielded reflective fabric, and the electromagnetic shielding performance is between 0-30...

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Abstract

A split-ring resonator-like electromagnetic shielding multilayer composite fabric is disclosed in the invention, and comprises a front surface layer, at least one middle wave absorbing layer and a back surface layer which are sequentially connected in a bonding mode, the front surface layer is an electromagnetic wave incident layer, the back surface layer is an electromagnetic wave reflecting layer, the middle wave absorbing layer has a multi-band electromagnetic wave absorbing function, and the electromagnetic wave reflectivity is larger than -5dB. The middle wave absorbing layer is formed by arranging a plurality of split-ring resonators, and the plurality of split-ring resonators are adhered between the front layer and the back layer in a bonding manner. The problems that in the prior art, electromagnetic waves penetrate through fabric pores, so that the shielding performance of the fabric is greatly reduced, shielding fabric mainly reflects the electromagnetic waves, and adverse effects can be caused to human bodies and instruments in the surrounding environment are solved. The invention also discloses a preparation method of the split-ring resonator-like electromagnetic shielding multilayer composite fabric.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and relates to a multi-layer composite fabric for electromagnetic shielding of split resonant rings, and also relates to a preparation method of the composite fabric. Background technique [0002] Electromagnetic shielding fabrics are usually used to make various products such as clothing with electromagnetic protection, flexible masks, flexible isolation layers, composite material reinforcements, and stealth materials. It has a wide range of applications and huge demands in fields such as medical and civilian use, and its application prospects are very broad. However, there are still some problems in electromagnetic shielding fabrics. First, electromagnetic waves penetrate through the pores of the fabric, resulting in a significant reduction in the shielding performance of the fabric. Second, the current shielding that mainly reflects electromagnetic waves has adverse effects on human ...

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
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Application Information

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IPC IPC(8): H05K9/00H01Q17/00
CPCH05K9/0088H01Q17/005H01Q17/00
Inventor 刘哲贺思佳汪秀琛吴锡波
Owner XI'AN POLYTECHNIC UNIVERSITY
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