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A wearable breathable self-cleaning high electromagnetic shielding film and preparation method thereof

An electromagnetic shielding and self-cleaning technology, applied in the fields of magnetic/electric field shielding, shielding materials, electrical components, etc., can solve problems such as insufficient shielding effectiveness, wearable electromagnetic shielding materials unable to self-clean, human toxicity, etc., to improve efficiency and quality. Effect

Active Publication Date: 2021-11-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the current wearable electromagnetic shielding materials cannot be self-cleaning, the shielding efficiency is not enough, and has certain toxicity to the human body, the purpose of the present invention is to provide a wearable breathable self-cleaning high electromagnetic shielding film and its preparation method

Method used

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  • A wearable breathable self-cleaning high electromagnetic shielding film and preparation method thereof
  • A wearable breathable self-cleaning high electromagnetic shielding film and preparation method thereof
  • A wearable breathable self-cleaning high electromagnetic shielding film and preparation method thereof

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Embodiment 1

[0036] This embodiment provides a preparation method of a wearable breathable self-cleaning high electromagnetic shielding film, comprising the following steps:

[0037] (1) Cut 0.503 g carbon fiber tow and 0.754 g ES fiber tow into 6 mm length with a fiber chopping machine to obtain chopped carbon fiber and chopped ES fiber, put the chopped carbon fiber and chopped ES fiber into 170 ml hydroxyl Mix in the ethyl cellulose solution, the solvent of the hydroxyethyl cellulose solution is deionized water, the concentration is 0.012 g / ml, stir at 600 rpm for 5 min, let stand for 5 min, and then make carbon fiber by paper forming machine Non-woven fabrics were dried in a constant temperature drying oven at 60 °C for 45 min. Put the dried porous carbon fiber non-woven fabric into a programmed tablet press and press it to make the carbon fibers firmly bond. The hot-pressing time is 10 min, the hot-pressing temperature is 150 ℃, the hot-pressing pressure is 6 MPa, and the porous carbo...

Embodiment 2

[0045] This embodiment provides a preparation method of a wearable breathable self-cleaning high electromagnetic shielding film, comprising the following steps:

[0046] (1) Cut 0.503 g carbon fiber tow and 0.754 g ES fiber tow into 6 mm length with a fiber chopping machine to obtain chopped carbon fiber and chopped ES fiber, put the chopped carbon fiber and chopped ES fiber into 170 ml hydroxyl Mix in the ethyl cellulose solution, the solvent of the hydroxyethyl cellulose solution is deionized water, the concentration is 0.012 g / ml, stir at 600 rpm for 5 min, let stand for 5 min, and then make carbon fiber by paper forming machine Non-woven fabrics were dried in a constant temperature drying oven at 60 °C for 45 min. Put the dried porous carbon fiber non-woven fabric into a programmed tablet press and press it to make the carbon fibers firmly bond. The hot-pressing time is 10 min, the hot-pressing temperature is 150 ℃, the hot-pressing pressure is 6 MPa, and the porous carbo...

Embodiment 3

[0054] This embodiment provides a preparation method of a wearable breathable self-cleaning high electromagnetic shielding film, comprising the following steps:

[0055] (1) Cut 0.503 g carbon fiber tow and 0.754 g ES fiber tow into 6 mm length with a fiber chopping machine to obtain chopped carbon fiber and chopped ES fiber, put the chopped carbon fiber and chopped ES fiber into 170 ml hydroxyl Mix in the ethyl cellulose solution, the solvent of the hydroxyethyl cellulose solution is deionized water, the concentration is 0.012 g / ml, stir at 600 rpm for 5 min, let stand for 5 min, and then make carbon fiber by paper forming machine Non-woven fabrics were dried in a constant temperature drying oven at 60 °C for 45 min. Put the dried porous carbon fiber non-woven fabric into a programmed tablet press and press it to make the carbon fibers firmly bond. The hot-pressing time is 10 min, the hot-pressing temperature is 150 ℃, the hot-pressing pressure is 6 MPa, and the porous carbo...

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Abstract

The invention discloses a wearable breathable self-cleaning high electromagnetic shielding film and a preparation method thereof. The method comprises the following steps: (1) preparing a porous carbon fiber non-woven fabric; (2) preparing the porous carbon fiber obtained in step (1) Immerse the non-woven fabric in the dopamine solution, take it out and wash it with water; (3) chemically silver-plate the porous carbon fiber non-woven fabric soaked in step (2); (4) silver-plate the porous carbon fiber non-woven fabric in step (3) As a cathode, electroplate the microstructure in the electrolyte solution, obtained from a clean silver-plated electromagnetic shielding film; (5) dissolve the nano-resin material in a solvent to obtain a nano-resin solution, and electrospin the nano-resin solution to step (4) On the electromagnetic shielding film, a wearable breathable self-cleaning high electromagnetic shielding film is obtained. The wearable breathable self-cleaning high electromagnetic shielding film prepared by the method has excellent electromagnetic shielding performance and self-cleaning ability as well as good flexibility and corrosion resistance.

Description

technical field [0001] The invention relates to fields requiring electromagnetic protection, such as aerospace, wearable electronic equipment, flexible materials and electronic communications, and specifically relates to a breathable self-cleaning high electromagnetic shielding film and a preparation method thereof. Background technique [0002] The development of technologies such as wireless (Wi-Fi) and Bluetooth has greatly promoted the popularity of electronic products such as mobile phones, tablets, laptops, and smart TVs. These electronic products inevitably produce electromagnetic radiation in nature, which will not only interfere with the normal operation of surrounding electronic equipment and communication equipment, but may also cause unpredictable harm to human health. At present, metal-based shielding materials have disadvantages such as high density, poor flexibility, poor corrosion resistance, complex process, and limited range of electromagnetic shielding eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00D06M11/83D06M13/368D06M101/20D06M101/40
CPCD06M11/83D06M13/368D06M2101/20D06M2101/40H05K9/009
Inventor 陆龙生梅小康谢颖熙
Owner SOUTH CHINA UNIV OF TECH
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