A kind of electromagnetic shielding composite fabric and its preparation and application

A composite fabric and electromagnetic shielding technology, which is applied in applications, building components, chemical instruments and methods, etc., can solve problems such as poor bonding force between metal and fabric, serious pollution in the preparation process, and poor shielding performance of products, so as to achieve excellent electromagnetic performance , The preparation process is simple, and the reflection efficiency is enhanced

Inactive Publication Date: 2018-05-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gold-plated coated fabric has problems such as poor bonding between metal and fabric, easy to fall off, easy to scratch the coating and lose shielding performance, and serious pollution in the preparation process. So far, it has not been widely used in the field of electromagnetic shielding, while metal fiber blended fabric There are also problems such as easy entanglement during the weaving process, easy breakage of metal fibers, low production efficiency, and high production costs, and the shielding performance of the products produced is relatively poor.

Method used

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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  • A kind of electromagnetic shielding composite fabric and its preparation and application
  • A kind of electromagnetic shielding composite fabric and its preparation and application
  • A kind of electromagnetic shielding composite fabric and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Material:

[0037] (1) The selected size is 40×40cm 2 The carbon nanotube membrane 1 (Suzhou Institute of Nanotechnology and Nanobionics, Chinese Academy of Sciences), the membrane thickness is 20um, the porosity is 75%, the tensile strength is about 200MPa, and the electrical conductivity is about 1×10 5 S / m;

[0038] (2) select the graphene suspension of 2mg / ml (New Material Co., Ltd.);

[0039] (3) Polyaniline 2 (Alfa Aisha Co.), the conductivity of which is 1 S / cm.

[0040] (4) Mix PDMS (polydimethylsiloxane) liquid (Dow Corning DC184) and curing agent at a ratio of 10:1 to obtain adhesive 3.

[0041] (5) Use ultra-fine and ultra-thin Lycra cloth 4, weight: 110g / m 2 , yarn count: 20D, composition and content: nylon: 80%, spandex: 20%, size 40×40cm 2 .

[0042] Preparation steps:

[0043]The uniformly dispersed graphene suspension was deposited on a layer of ultra-thin carbon nanotube film through a Buchner funnel, and dried naturally at room temperature to ob...

Embodiment 2

[0046] Material:

[0047] (1) The selected size is 60×20cm 2 The carbon nanotube membrane 1 (Suzhou Institute of Nanotechnology and Nanobionics, Chinese Academy of Sciences), the membrane thickness is 20um, the porosity is 75%, the tensile strength is about 200MPa, and the electrical conductivity is about 1×10 5 S / m;

[0048] (2) select the graphene suspension of 2mg / ml (New Material Co., Ltd.);

[0049] (3) Polyaniline 2 (Alfa Aisha Co.), the conductivity of which is 1 S / cm.

[0050] (4) Water-soluble polyurethane (Bayer Technology Co., Ltd.) was selected as the adhesive 3 .

[0051] (5) Use high-density nylon four-sided elastic fabric 4, weight: 168g / m 2 , Composition and content: nylon: 84%, spandex: 16%, size 20×20cm 2 .

[0052] Preparation steps:

[0053] The uniformly dispersed graphene suspension was deposited on a layer of ultra-thin carbon nanotube film through a Buchner funnel, and dried naturally at room temperature to obtain an ultra-thin carbon nanotube / gr...

Embodiment 3

[0056] Material:

[0057] (1) The selected size is 20×20cm 2 The carbon nanotube membrane 1 (Suzhou Institute of Nanotechnology and Nanobionics, Chinese Academy of Sciences), the membrane thickness is 20um, the porosity is 75%, the tensile strength is about 200MPa, and the electrical conductivity is about 1×10 5 S / m;

[0058] (2) select the graphene suspension of 2mg / ml (New Material Co., Ltd.);

[0059] (3) Polyaniline 2 (Alfa Aisha Co.), the conductivity of which is 1 S / cm.

[0060] (4) Water-soluble polyurethane (Bayer Technology Co., Ltd.) is selected as the adhesive 3, which is waterproof and breathable.

[0061] (5) Use 100D polyester four-sided elastic fabric 4, weight: 125g / m 2 , composition and content: polyester: 90%, spandex: 10%, size is 40×40cm 2 .

[0062] Preparation steps:

[0063] The uniformly dispersed graphene suspension was deposited on a layer of ultra-thin carbon nanotube film through a Buchner funnel, and dried naturally at room temperature to ob...

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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Abstract

The invention relates to an electromagnetic shielding composite fabric as well as preparation and application thereof. The electromagnetic shielding composite fabric comprises: a carbon nanotube / graphene composite film (1), a polyaniline thin film (2), a binding agent (3) and a base fabric (4), wherein graphene in the carbon nanotube / graphene composite film is compounded on the upper surface of a carbon nanotube film; the polyaniline thin film is adhered to the lower surface of the carbon nanotube film through the binding agent. The preparation comprises: depositing a graphene suspension solution on one layer of a carbon nanotube thin film and naturally airing at room temprature to obtain a graphene / carbon nanotube composite film; adhering the polyaniline thin film on the lower surface of the carbon nanotube thin film through the binding agent to obtain a carbon nanotube / graphene / polyaniline composite film; the base fabric is adhered to the surface of the carbon nanotube / graphene / polyaniline composite film through the binding agent and then is cured to obtain the product. The electromagnetic shielding composite fabric prepared by the invention has a good electromagnetic shielding performance and can also keep the characteristics of air permeability, flexibility, foldability, binding property and the like of a fabric material.

Description

technical field [0001] The invention belongs to the field of flexible electromagnetic shielding materials and its preparation, in particular to an electromagnetic shielding composite fabric and its preparation and application. Background technique [0002] With the rapid development of today's society, modern technology is changing with each passing day, electrical products are becoming more and more common, and the problems caused by electromagnetic radiation are becoming more and more serious. Shielding is an important means of suppressing electromagnetic interference. Among shielding materials, electromagnetic shielding fabric not only has the advantages of good shielding, softness, and easy deformation, but also facilitates cutting and sewing, which is closer to people's lives. It not only meets the needs of people's daily life, but also can Play a protective role. Therefore, electromagnetic shielding fabrics have become a research hotspot, and have developed rapidly in...

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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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/04B32B9/00B32B27/02B32B27/40B32B27/28B32B27/12B32B27/34B32B27/36B32B3/18
CPCB32B3/085B32B5/02B32B9/007B32B9/045B32B9/047B32B27/12B32B27/28B32B2262/0261B32B2262/0284B32B2262/0292B32B2307/212B32B2307/554B32B2307/724B32B2419/00B32B2437/00
Inventor 许福军孙立军
Owner DONGHUA UNIV
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