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Sheet material with three-layer structure and clothes comprising sheet material

A sheet-like material, three-layer structure technology, applied in metal layered products, synthetic resin layered products, coatings, etc., can solve the problems of inability to achieve shielding effectiveness, application limitations, etc., and achieve strong wear resistance and service life. Prolonged, long-lasting effect of radiation protection

Active Publication Date: 2017-06-30
青岛天银纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shielding effectiveness of this type of electromagnetic shielding fabric is generally between 30-60db, and cannot achieve a higher shielding effectiveness such as exceeding 60db or even reaching more than 90db
Therefore, for specific fields, such as military products, the application is limited

Method used

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  • Sheet material with three-layer structure and clothes comprising sheet material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] As the preparation method of the plating layer, a method of weaving metal-plated fibers into a sheet-like material can also be exemplified. It is mainly made of conductive fibers or blended with ordinary fibers. Commonly used conductive fibers mainly include nickel fiber, copper fiber and carbon fiber. The electromagnetic shielding material prepared by this process has a low shielding effect in the frequency range of 30-1000MHz. Even if 6 layers of lamination are performed, the shielding effect of the electromagnetic shielding material is only It can reach about 55dB. At present, it is known that the electromagnetic shielding fabric material developed by China Shanxi Huali Clothing Technology Development Co., Ltd. has a shielding performance of 34.77dB at 10GHz. Possibly the best shielding effect known so far.

[0035]The inventors found that by adopting a double conductive layer (first surface layer and middle layer) design, an unexpected effect is achieved in terms ...

Embodiment 1

[0039] Example 1 Preparation of sheet material of the present invention.

[0040] Use copper-plated fiber fabric (nylon 66 electroless copper-plated plain weave fabric, specifications: the linear density of warp and weft yarns is 70D, the warp and weft yarn densities are respectively 380, 310 / 10cm, copper content 20% by weight) as the first surface Layer; use silver-plated fiber fabric (100% silver fiber anti-radiation knitted fabric ZZB-1, from Qingdao Tianyin Textile Technology Co., Ltd., silver content 30% by weight) as the middle layer; use TPU film as the second surface layer.

[0041] The first surface layer and the middle layer are pressed into a double-layer structure through an adhesive. Take a double-layer structure with a size of 30cm×30cm. Put it flat on the delivery plate of the laminating machine (Hangzhou Renxie Electromechanical Technology Co., Ltd.). Use a 100-mesh steel sieve to spread a certain amount of TPU hot-melt adhesive powder evenly on the surface o...

Embodiment 2

[0042] Evaluation of Embodiment 2 Shielding Effectiveness

[0043] According to GJB 6190-2008, a method for measuring the shielding effectiveness of electromagnetic shielding materials, the shielding effectiveness of the sheet material of the present invention and the material used for comparison was tested. Among them, the shielding effectiveness (SE), which is defined as the ratio of received power or voltage with shielding material and without shielding material at the same excitation level:

[0044] SE=20lg(V 0 / V 1 )=10lg(P 0 / P 1 ) (1)

[0045] Where SE is the shielding effectiveness, dB; V 0 Acceptable voltage without shielding material; V 1 Acceptable voltage with shielding material; P 0 Accepted power without shielding material; P 1 It is the accepted power when there is shielding material.

[0046] Table 1 Shielding effect level

[0047]

[0048] The shielding effect of table 2 material of the present invention

[0049] SE(dB) grade Ma...

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Abstract

The invention provides a sheet material with a three-layer structure and clothes. The sheet material comprises a first surface layer, a middle layer and a second surface layer which are sequentially arranged, the first surface layer is a macromolecule fiber layer plated with first metal, the middle layer is a macromolecule fiber layer plated with second metal, and the second surface layer is a water-tolerance macromolecule polymer coating. The sheet material is a light soft material, particularly applicable to military fields such as military operation command tents, anti-electromagnetic shielding clothes and electromagnetic shielding rooms and the fields such as aviation, aerospace and offshore wild rescue and used for military electronic countermeasures, military false targets and has electromagnetic shielding effects on 90db or more.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a sheet material with a three-layer structure and clothes containing it. Background technique [0002] With the rapid development of science and technology, electromagnetic waves have been widely used in aviation, aerospace, communications, household appliances, military and other fields, and the problem of electromagnetic pollution has become increasingly prominent. All over the world, various information networks transmit hundreds of millions of important military, political, and economic intelligence and information, and information leakage incidents caused by electromagnetic wave radiation also occur from time to time, directly threatening national politics, economy, military security. At the same time, electromagnetic waves can also cause weapon systems to malfunction, bringing serious hidden dangers to operations. Therefore, preventing electromagnetic radiation to protect informat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B15/08B32B7/12B32B27/06B32B33/00A41D31/02
CPCA41D31/02B32B5/02B32B7/12B32B15/08B32B27/06B32B33/00B32B2255/02B32B2255/205B32B2262/02B32B2307/212B32B2307/554B32B2307/734B32B2437/00
Inventor 卜庆革
Owner 青岛天银纺织科技有限公司
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