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Electromagnetic wave shielding fabric and manufacturing method thereof

A manufacturing method and electromagnetic wave technology, applied in the direction of fabrics, textiles, papermaking, textiles, etc., can solve the problems of limited shielding effect and consumption of electromagnetic waves, and achieve the effect of improving antistatic, improving electrical conductivity, and improving the effect of shielding radio waves

Inactive Publication Date: 2012-08-01
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the above-mentioned shielding fabrics contain a large amount of cotton or ordinary chemical fibers, it is difficult to effectively shield microwave radiation or X-ray radiation, and the shielding materials that reflect electromagnetic waves cannot consume a large amount of electromagnetic waves, and the shielding effect is limited.

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

[0016] Weigh 15 parts by weight of silver-plated short fibers and 85 parts by weight of wave-absorbing fibers. The wave-absorbing fibers contain 10% of ferric oxide and nickel powder, and the ratio is 1:1. Put the two kinds of fibers together and spray simethicone emulsifier to 1% of the total amount of fibers. After equilibrating for 0.5 hours, mix them, then make 32 spun yarns through conventional cotton spinning process, and then pass 32 spun yarns through conventional Plain weave fabric is made by the weaving process. After testing, the weight per square meter of the fabric is 170 grams; the fabric has a radio wave shielding rate of 20 decibels, a microwave reflection attenuation rate of 15 decibels, and an X-ray shielding rate of the electromagnetic wave shielding fabric of 51%.

Embodiment 2

[0018] Weigh 60 parts of short stainless steel fibers and 40 parts of wave-absorbing fibers. The wave-absorbing fibers contain 30% strontium ferrite and cobalt powder, and the ratio is 2:1. After concentrating the two fibers, spray fatty alcohol polyoxyethylene ether emulsifier to 3% of the total fiber, mix after 0.5 hours of balance, then make 21 spun yarns through roving, and then weave 21 yarns into Plain weave fabric, the weight per square meter of fabric is 260 grams. The radio wave shielding rate of the fabric is 50 decibels, the microwave reflection attenuation rate is 25 decibels, and the X-ray shielding rate of the electromagnetic wave shielding fabric reaches 68%.

Embodiment 3

[0020] Weigh 30 parts of copper-plated fiber, 20 parts of short nickel-plated fiber, and 50 parts of microwave-absorbing fiber. The wave-absorbing fiber contains 20% nickel-iron-boron and iron powder, and the ratio is 3:1. After concentrating the two fibers, spray simethicone emulsifier to 2.5% of the total amount of fibers, mix after 0.5 hours, and then make 21 spun yarns through roving, and then knit 21 yarns to make ribbed fabrics. The weight per square meter of fabric is 230 grams. The radio wave shielding rate of the fabric is 40 decibels, the microwave reflection attenuation rate is 28 decibels, and the X-ray shielding rate of the electromagnetic wave shielding fabric reaches 65%.

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 discloses an electromagnetic wave shielding fabric and a manufacturing method thereof. The fabric is characterized by being prepared by blending conductive fibers and wave absorbing fibers in a weight part ratio of 1.5:8.5-6:5 through a conventional textile technology; the conductive fibers are stainless steel fibers, silver-plated fibers, aluminum-plated fibers, copper-plated fibers, nickel-plated fibers or copper and nickel-plated fibers, the diameters of the conductive fibers are 3 to 10 microns, and the length of the conductive fibers is 36 to 50 millimeters; the wave absorbing fibers are functional fibers containing magnetic powder and metal powder, wherein the magnetic powder is iron sesquioxide, ferroferric oxide, strontium ferrite, barium ferrite, neodymium iron boron, nickel iron boron, samarium iron nitrogen or neodymium iron nitrogen; the metal powder is iron powder, nickel powder or cobalt powder; the magnetic powder and metal powder content of the functional fibers accounts for 10 to 30 percent of the total amount, and the preparation ratio of the magnetic powder to the metal powder is 1:1-3:1; and the fineness of the functional fibers is 2 to 5 dtex. The composition of the electromagnetic wave shielding fabric and the conventional textile technology are adopted in the manufacturing method.

Description

technical field [0001] The invention relates to functional textile technology, in particular to an electromagnetic wave shielding fabric and a manufacturing method thereof. Background technique [0002] The harm of electromagnetic waves to human body has attracted people's attention day by day. Studies have shown that the electromagnetic waves that are more harmful to the human body and difficult to protect are mainly microwaves and X-rays. At present, shielding electromagnetic wave yarns and fabrics are mainly made of stainless steel fibers mixed with cotton or ordinary chemical fibers, or coated with metal films on the surface of ordinary chemical fibers. Chinese patent CN1659321 discloses a yarn and fabric made of special metal and textile fibers capable of shielding electromagnetic waves through reflection. Chinese patent CN101033546 discloses a composite manufacturing method of vacuum sputtering coating and chemical coating of electromagnetic wave shielding fabric. C...

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): D03D15/00D03D15/02D02G3/04D02G3/12D06M15/53D06M15/643D06M15/55D06M15/227D03D15/25D03D15/30D03D15/47D03D15/50D03D15/533
Inventor 齐鲁孟明
Owner TIANJIN POLYTECHNIC UNIV
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