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Electromagnetic shielding and hydrophobic functional fabric with high absorption characteristics and preparation method thereof

A technology of electromagnetic shielding and functional fabrics, applied in textiles and papermaking, etc., can solve problems affecting the functional softness of fabrics, achieve good commercial application prospects, improve hydrophobic performance, and increase surface roughness

Active Publication Date: 2020-08-14
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used hydrophobic fabrics are mainly made by post-processing the fabrics with waterproofing agents, which not only increases the complexity of the preparation process, but also inevitably affects the functionality and softness of the fabric itself after treatment.
However, at present, fabric materials with high absorption properties, electromagnetic shielding function and hydrophobic properties are still rarely reported.

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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  • Electromagnetic shielding and hydrophobic functional fabric with high absorption characteristics and preparation method thereof
  • Electromagnetic shielding and hydrophobic functional fabric with high absorption characteristics and preparation method thereof
  • Electromagnetic shielding and hydrophobic functional fabric with high absorption characteristics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The concrete steps of preparation are:

[0046] Step 1: Add 0.1g of multi-walled carbon nanotubes and 0.6g of fluorescent whitening agent VBL into 30ml of deionized water, stir and mix thoroughly at room temperature, and ultrasonically disperse for 3 hours to obtain a uniform dispersion of multi-walled carbon nanotubes; take a piece Cotton fiber fabric with a thickness of 2mm, which is fully soaked in the obtained carbon nanotube dispersion, taken out, placed in an oven at 80°C for 60 minutes, and repeated this soaking-drying operation twice to obtain a conductive shielding cotton fabric;

[0047] Step 2: Dissolve 3g of polyvinylidene fluoride (PVDF) in 60ml of dimethylformamide (DMF), stir at 80°C for 8 hours, prepare a uniform solution, and apply it to the conductive shielding cotton obtained in step 1 On the fabric, and then placed in a constant temperature and humidity box with a temperature of 20°C and a humidity of 98% for 12 hours;

[0048] Step 3: Soak the cotton...

Embodiment 2

[0055] Step 1: Add 0.1g of multi-walled carbon nanotubes and 0.6g of fluorescent whitening agent VBL into 30ml of deionized water, stir and mix thoroughly at room temperature, and ultrasonically disperse for 3 hours to obtain a uniform dispersion of multi-walled carbon nanotubes; take a piece Cotton fiber fabric with a thickness of 2mm, which is fully soaked in the obtained carbon nanotube dispersion, taken out, placed in an oven at 80°C for 60 minutes, and repeated this soaking-drying operation twice;

[0056] Step 2: Dissolve 3g of polyvinylidene fluoride (PVDF) in 60ml of dimethylformamide (DMF), stir at 80°C for 8h, and after preparing a uniform solution, add 0.5g of ferric iron tetroxide (Fe 3 o 4 ) nanoparticles, fully stirred, ultrasonic 5h, prepared PVDF / Fe 3 o 4 the dispersion liquid;

[0057] Step 3: PVDF / Fe obtained in Step 2 3 o 4 The dispersion liquid is coated on the conductive cotton fabric obtained in step 1, and then placed in a constant temperature and h...

Embodiment 3

[0060] Step 1: Add 0.1g of multi-walled carbon nanotubes and 0.6g of fluorescent whitening agent VBL into 30ml of deionized water, fully stir and mix at room temperature, and ultrasonically disperse for 3 hours to obtain a uniform multi-walled carbon nanotube dispersion; take a piece Cotton fiber fabric with a thickness of 2mm, which is fully soaked in the obtained carbon nanotube dispersion, taken out, placed in an oven at 80°C for 60 minutes, and repeated this soaking-drying operation 3 times;

[0061] Step 2: Dissolve 3g of polyvinylidene fluoride (PVDF) in 60ml of dimethylformamide (DMF), stir at 80°C for 8h, and after preparing a uniform solution, add 1g of ferric oxide (Fe 3 o 4 ) nanoparticles, fully stirred, ultrasonic 5h, prepared PVDF / Fe 3 o 4 the dispersion liquid;

[0062] Step 3: PVDF / Fe obtained in Step 2 3 o 4 The dispersion liquid is coated on the conductive cotton fabric obtained in step 1, and then placed in a constant temperature and humidity box with a...

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 shielding and hydrophobic functional fabric with high absorption characteristics and a preparation method thereof. The preparation method comprises the mainoperation steps of coating a textile with conductive filler dispersion liquid to obtain a conductive coating; and preparing a hydrophobic polymer nanoparticle composite solution, and coating the obtained conductive cotton fabric with the hydrophobic polymer nanoparticle composite solution to prepare a polymer composite microsphere coating. The fabric prepared by the method has good electromagneticshielding performance on the basis of keeping the softness of the fabric, the absorption loss of the fabric is increased by regulating and controlling electromagnetic parameters of the fabric, the reflection and secondary radiation of electromagnetic waves are greatly reduced, meanwhile, the prepared electromagnetic shielding fabric also has a hydrophobic function, and the preparation method is simple, convenient, feasible and low in cost.

Description

technical field [0001] The invention relates to the technical field of fabrics, in particular to an electromagnetic shielding and hydrophobic functional fabric with high absorption properties and a preparation method thereof. Background technique [0002] In recent years, people use electronic products and equipment more frequently in their daily work and life, and most electronic products produce electromagnetic radiation to varying degrees. The electromagnetic interference generated by electromagnetic radiation has not only affected the performance of electronic products, but also seriously endangered human health. Electromagnetic shielding fabrics are currently one of the effective ways to isolate electromagnetic radiation. [0003] At present, the traditional electromagnetic shielding fabrics on the market mainly include metal fiber mixed fabrics and metal coated fabrics. problem, the overall effect is still not satisfactory. In recent years, non-metallic electromagnet...

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): D06N3/04D06N3/00
CPCD06N3/047D06N3/0063D06N3/0015D06N3/0061D06N2209/048D06N2209/142D06N2201/042D06N2201/045D06N2205/08
Inventor 丁欣张献张萍陈林田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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