Method for preparing aromatic polyamide electromagnetic shielding textile

An aromatic polyamide and electromagnetic shielding technology, applied in fabrics, shielding, textiles, etc., can solve the problems of non-flame retardant, secondary burns for users, easy melting, etc., and achieve high electromagnetic shielding and high flame retardant effects

Inactive Publication Date: 2008-07-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common defect they have is that they are not flame retardant, and they are easy to melt when exposed to open flames, which will cause secondary burns to users.
Therefore, it is not suitable for special occasions that require flame retardancy and heat resistance

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: Get 80KG of Nomex fiber, 20KG of 4.5 μm stainless steel fiber, after mixing, through weaving processes such as cleaning, carding, slivering, drawing, roving, spun yarn, finally make 32 specifications of stainless steel, Nomex fiber blending yarn. Then, using a conventional weaving process, weave an electromagnetic shielding fabric (twill weave) with a warp density of 50 and a weft density of 52.

Embodiment 2

[0011] Embodiment 2: 68KG of aramid fiber 1313 fiber produced by Shandong Yantai Spandex Co., Ltd., 10KG of Kevler fiber, and 22KG of 4.5 μm stainless steel fiber. , and finally made 21 specifications of blended yarn composed of stainless steel fiber, Kevler fiber and domestic aramid 1313 fiber. Then, using a conventional weaving process, it is woven into an electromagnetic shielding fabric (plain weave) with a warp density of 52 and a weft density of 52.

[0012] Fabric produced by the inventive method; its electromagnetic shielding effectiveness test value sees the following table 1:

[0013] Frequency (MHz)

P 1 (dBm)

P 2 (dBm)

SE db (dB)

SE ％ .(%)

10

0.0

-43.4

43.4

99.9954

30

0.0

-43.2

43.2

99.9952

100

0.0

-43.3

43.3

99.9953

300

0.0

-43.5

43.5

99.9955

1000

-0.1

-43.6

43.5

99.9955...

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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PUM

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Abstract

The invention relates to a process for preparing aromatic polyamide electromagnetic shielding fabric. The method comprises firstly mixing aromatic polyamide fiber and stainless steel fiber, adopting normal textile technology, and weaving required yarn counts of blended yarns, wherein stainless steel accounts for 20%-30% of quality of blended fiber, then adopting normal weaving method, weaving blended yarns which is prepared in the step a into fabric with warp density 50-60 and latitudinal density 52-62, namely aromatic polyamide electromagnetic shielding fabric. Compared with the prior art, the method of the invention is pollution-free, and can be produced in large scale, the product has high flame resistance, heat insulation and high electromagnetic shielding property, which can be used as electromagnetic screen in specific departments such as aviation, space, military, communication and the like.

Description

technical field [0001] The invention relates to a method for preparing an aromatic polyamide electromagnetic shielding fabric, in particular to a method for preparing an electromagnetic shielding fabric by blending aromatic polyamide fibers and stainless steel fibers. Background technique [0002] With the development of electronic industry, information industry and high-tech, the side effects of electromagnetic waves are becoming more and more obvious, and electromagnetic wave pollution has attracted more and more attention. Electronic instruments and equipment, precision electronic components, telecommunication transmitters, etc. may become sources of radiation during use or operation and cause space electromagnetic pollution. Causes direct damage such as leukopenia, hair loss, and decreased immunity. Workers engaged in radar, communications, television broadcasting, and aerospace, aviation and other special workplaces also need effective anti-electromagnetic radiation ma...

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 Applications(China)
IPC IPC(8): D03D15/00D02G3/04D02G3/12G21F1/00G21F3/00D03D15/25D03D15/283D03D15/47D03D15/50D03D15/513
Inventor 唐志勇张德仁孙晋良任慕苏张家宝刘丽杨敏刘杰霞
Owner SHANGHAI UNIV
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