Warp-knitted fishnet capable of shielding microwave

Abstract

The invention relates to a warp-knitted fishnet capable of shielding microwave. The warp-knitted fishnet is prepared by the following steps of: weaving warp, weft and binding yarn through a warp-knitting weaving process, dyeing, setting and coiling to obtain the product, wherein the warp is 30S / 2-50S / 2 polyester-acrylic conductive yarn; the weft is the combination of 30S / 2-50S / 2 polyester-acrylicconductive yarn and 500-1000D high-strength low-shrinkage polyester drawn yarn; and the binding yarn is 50-200D polyester drawn yarn. The obtained warp-knitted fishnet capable of shielding microwave is of a honeycomb shape formed by multiple meshes as a whole. The warp-knitted fishnet capable of shielding microwave overcomes the shortcomings of poor fastness, easiness in shifting, poor pattern regularity and the like of low-density warp-knitted materials, and has the advantages of high fastness, regular meshes and difficulty in shifting; and the shielding efficiency to each wave band of the warp-knitted fishnet achieved achieves 20dB and the energy is attenuated by more than 98%, thus the warp-knitted fishnet meets the microwave shielding demands.

Description

technical field [0001] The invention relates to the field of functional textiles, in particular to a warp-knitted mesh cloth with microwave-proof function. Background technique [0002] From Ampere's law and Faraday's law of induction, we know that the alternating electric field generates a magnetic field around it, and the alternating magnetic field also generates an electric field around it. The electric field and magnetic field are alternately generated and propagated in the air, which we call electromagnetic waves. Microwave is an electromagnetic wave with a frequency of about 300MHz to 300GHz, that is, a wavelength of 1m to 1mm. [0003] With the rapid development of contemporary science and technology, the continuous improvement of material and cultural life, various household appliances, such as televisions, computers, microwave ovens, etc. have entered thousands of households; the rise of communications has made mobile phones the "pets" of this era. These household ...

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Problems solved by technology

[0007] In addition, patents such as CN101540208, CN101540208, CN2282313, and CN201141115 describe various anti-microwave devices. Textile anti-microwave performance test method and the development of its instrument" have introduced the principles and devices of some domestic anti-microwave textiles. The above-mentioned open documents have mainly explained that by introducing conductive fibers into textiles, and through reasonable The textiles made by the tissue structure have the effect of anti-microwave, but due to technical reasons, the conductive fiber used is stainless steel wire, and the conventional plain weave is generally used for the tissue structure, and the blended fiber of polyester: polyacrylonitrile-copper sulfide is used as the conductive fiber. , and the warp knitting process is selected in the weaving process, and the production technology of warp knitting mesh cloth that can shield microwaves in the finishing process is selected, shaped, dyed and rolled, which has not been mentioned in the open literature.

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