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

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 ...

AI Technical Summary

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 due to the penetration of electromagnetic waves through the pores of the fabric in the prior art, and the shielding fabric mainly reflects electromagnetic waves. Adverse effects on human body and equipment in the surrounding environment

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