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Making method of cotton fabric having conductive and electromagnetic shielding properties

An electromagnetic shielding and cotton fabric technology, applied in the field of preparation of functional cotton fabrics, can solve the problems of low electromagnetic shielding efficiency, cumbersome steps, high cost, etc., and achieve good electromagnetic shielding effect, good corrosion resistance and uniform size. Effect

Inactive Publication Date: 2016-07-20
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No. CN201510222706.7 discloses the use of low-temperature plasma to pretreat the surface of cotton fabrics, then cross-links aniline monomers with cross-linking resins, and finally in-situ polymerizes polyaniline to obtain a product with an electromagnetic shielding efficiency of 18dB, but Relying solely on polyaniline makes the electromagnetic shielding effect not high
In addition, the method of preparing cotton fabrics for electrical conductivity and electromagnetic shielding usually relies on electroless plating or vacuum plating induced by precious metal palladium, which is expensive and cumbersome steps are the main problems that limit its application.

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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  • Making method of cotton fabric having conductive and electromagnetic shielding properties
  • Making method of cotton fabric having conductive and electromagnetic shielding properties
  • Making method of cotton fabric having conductive and electromagnetic shielding properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of processing method of plain cotton fabric, concrete steps are:

[0038] (1) Pretreatment of cotton fabric:

[0039] a. Put the raw cotton fabric in a sodium hydroxide (40g / L) solution with a bath ratio of 1:100, and treat it at 80°C for 1 hour; remove surface impurities, and perform etching;

[0040] b. Dry the treated cotton fabric in an oven at 60° C. for 30 minutes.

[0041] (2) In-situ polymerization of polyaniline on cotton fabric:

[0042] a. Soak the alkali-treated cotton fabric in 200ml of mixed solution containing 0.5M hydrochloric acid and 0.25M aniline for 1h;

[0043] b. Add 40ml of 0.25M ammonium persulfate solution and polymerize for 3h.

[0044] c. After the polymerization reaction is finished, wash repeatedly with deionized water, and dry at room temperature to obtain a polyaniline / cotton fabric.

[0045] (3) Electroless silver plating:

[0046] a. Sensitization: put the polyaniline / cotton fabric into 1g / L silver nitrate solution for 5h;

...

Embodiment 2

[0063] A kind of processing method of twill cotton fabric, concrete steps are:

[0064] (1) Pretreatment of cotton fabric:

[0065] a. Put the raw cotton fabric in a sodium hydroxide (50g / L) solution with a bath ratio of 1:100, and treat it at 100°C for 1 hour; remove surface impurities, and perform etching;

[0066] b. Dry the treated cotton fabric in an oven at 60° C. for 30 minutes.

[0067] (2) In-situ polymerization of polyaniline on cotton fabric:

[0068] a. Soak the alkali-treated cotton fabric in 250ml of mixed solution containing 0.5M hydrochloric acid and 0.25M aniline for 1h;

[0069] b. Add 50ml of 0.25M ammonium persulfate solution and polymerize for 5h.

[0070] c. After the polymerization reaction is finished, wash repeatedly with deionized water, and dry at room temperature to obtain a polyaniline / cotton fabric.

[0071] (3) Electroless silver plating:

[0072] a. Sensitization: Put the polyaniline / cotton fabric in 2g / L silver nitrate solution for 5h;

...

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 a making method of a cotton fabric having conductive and electromagnetic shielding properties. The making method of the cotton fabric includes the steps that the cotton fabric is soaked in a mixed solution of aniline and hydrochloric acid, then, the ammonium persulfate solution is added for reaction, and the polyaniline / cotton fabric is obtained; the polyaniline / cotton fabric is placed into the silver nitrate solution for sensitization, and the sensitized polyaniline / cotton fabric is obtained; the silver plating solution is prepared, and then is added to the sensitized polyaniline / cotton fabric obtained in step 2, ultrasonic reaction is conducted, and the cotton fabric having conductive and electromagnetic shielding properties is obtained. The cotton fabric has good conductivity with 26.7 megohm per square, has high corrosion resistance, and has excellent electromagnetic shielding effect with 40 decibels to 80 decibels.

Description

technical field [0001] The invention belongs to the field of preparation of functional cotton fabrics, in particular to a preparation method of cotton fabrics with conductive and electromagnetic shielding properties. Background technique [0002] Electromagnetic radiation is produced during the use of electronic products, and it is the fourth largest pollution after water pollution, air pollution and noise pollution. This invisible killer will not only cause electromagnetic interference, affect the transmission of other signals, cause misfired missiles and plane crashes and other hazards; it will also endanger human health, causing cataracts, leukemia and cancer and other lesions. Therefore, it is imperative to develop fabrics with electromagnetic shielding effect. [0003] Electromagnetic shielding fabric refers to the fabric that can strongly reflect electromagnetic waves. When the electromagnetic wave is incident on the surface of the fabric, the electromagnetic energy e...

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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IPC IPC(8): D06M15/61D06M11/83D06M101/06
CPCD06M15/61D06M11/83D06M2101/06
Inventor 俞丹王炜郝天琪
Owner DONGHUA UNIV
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