Ultra-light, ultra-thin, flexible and breathable ultra-fine fiber composite membrane with multi-spectrum electromagnetic wave protection performance and preparation method thereof

A protective performance and ultra-fine fiber technology, which is applied in the field of electromagnetic wave protection materials, can solve the problems of not having anti-infrared characteristics, etc., and achieve effective absorption and shielding, good metal conductivity, and excellent performance.

Active Publication Date: 2018-12-28
吉林省贞靓科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the Ag / PAN composite film is made into medical protective clothing, its weight is only one tenth of that of traditional lead protective clothing (application number: CN201710051718.7), but none of them have anti-infrared characteristics

Method used

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  • Ultra-light, ultra-thin, flexible and breathable ultra-fine fiber composite membrane with multi-spectrum electromagnetic wave protection performance and preparation method thereof
  • Ultra-light, ultra-thin, flexible and breathable ultra-fine fiber composite membrane with multi-spectrum electromagnetic wave protection performance and preparation method thereof
  • Ultra-light, ultra-thin, flexible and breathable ultra-fine fiber composite membrane with multi-spectrum electromagnetic wave protection performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1. is used for the Ag-Ni / NiO / PAN-PU composite film of radio wave shielding

[0051] Step 1: Add 1.0g of polyacrylonitrile and 0.3g of polyurethane to Erlenmeyer flasks filled with 14g and 2.0g of N,N-dimethylformamide respectively, heat in a water bath at 60°C and magnetically stir for 6h and room temperature Stir under magnetic force for 6 hours until the polymer is completely dissolved, then add 10 g of polyacrylonitrile solution into the polyurethane solution, and stir at room temperature for 30 minutes to obtain a uniform and stable mixed spinning solution. Then, 0.2 g of silver nitrate (metal salt A) was added to the obtained spinning solution and stirred at room temperature in the dark for 12 hours to obtain a uniform, transparent and stable spinning solution with a mass fraction of metal salt A of 1.63%. Move it into an electrospinning device, and perform electrospinning under the conditions of a voltage of 15kV, a receiving distance of 15cm, a spinner...

Embodiment 2

[0056] Embodiment 2. Ag-Cu / CuO / PAN-PU composite film for radar shielding

[0057] Step 1: Add 0.9g of polyacrylonitrile and 0.3g of polyurethane to Erlenmeyer flasks containing 12g and 2.0g of N,N-dimethylformamide respectively, heat in a water bath at 60°C and stir magnetically for 6h and magnetically stir at room temperature Stir for 6 hours until the polymer is completely dissolved, then add 10 g of polyacrylonitrile solution into the polyurethane solution, and stir at room temperature for 30 minutes to obtain a uniform and stable mixed spinning solution. Then, 0.25 g of silver nitrate was added to the obtained spinning solution and stirred at room temperature in the dark for 14 hours to obtain a uniform, transparent and stable spinning solution with a metal salt mass content of 2.03%. Move it into an electrospinning device, and carry out electrospinning under the conditions of a voltage of 15kV, a receiving distance of 16cm, a spinneret diameter of 1.2mm, an ambient temper...

Embodiment 3

[0062] Example 3. Ni-W-P / WO for infrared stealth 3 / PAN-PU composite film

[0063] Step 1: Add 1.1g of polyacrylonitrile and 0.3g of polyurethane to Erlenmeyer flasks filled with 14g and 2.0g of N,N-dimethylformamide respectively, heat in a water bath at 60°C and magnetically stir for 8h and room temperature Stir under magnetic force for 8 hours until the polymer is completely dissolved, then add 10 g of polyacrylonitrile solution into the polyurethane solution, and stir at room temperature for 30 minutes to obtain a uniform and stable mixed spinning solution. Then, 0.2 g of nickel nitrate was added to the obtained spinning solution and stirred at room temperature in the dark for 20 hours to obtain a uniform, transparent and stable spinning solution with a metal salt mass content of 3.0%. Move it into an electrospinning device, and perform electrospinning under the conditions of a voltage of 20kV, a receiving distance of 30cm, a spinneret diameter of 1.5mm, an ambient tempera...

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Abstract

The invention relates to an ultra-light, ultra-thin, flexible and breathable ultra-fine fiber composite membrane with multi-spectrum electromagnetic wave protection performance and a preparation method thereof, belonging to the technical field of electromagnetic wave protection materials. An electrospinning method is combined with a metal chemical depositionmethod (or electrodeposition, ion sputtering vacuum plating), inorganic metal nanoparticles which are closely packed are fabricated on the surface of the organic ultrafine fiber, so that the organic ultrafine fiber has a specific shape, anda single-layer ultrathin fiber membrane carrying metal nano-alloy / metal oxide is formed, and a metal nano-alloy / metal oxide / ultrafine fiber composite membrane with a multilayer structure is preparedby a hot-pressing or resin-based reinforcer superposing method. The density of the composite membrane is only 2% ~ 15% of that of pure metal, but the composite membrane has good metal conductivity. Under the absorption loss of the metal nano-alloy / metal oxide, the multiple reflections of interlayer and intra-membrane voids, the diffraction of nano-structure and the scattering of macro-structure,the transmission and return of the incident electromagnetic waves are difficult, so as to achieve the purpose of absorbing and shielding the electromagnetic waves effectively.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave protection materials, in particular to a multi-spectrum (10 4 ~10 14 Hz and 10 16 ~10 22 Hz) ultra-light, ultra-thin, flexible, breathable microfiber composite film with electromagnetic wave protection performance and its preparation method. Background technique [0002] As we all know, according to the wavelength and frequency of electromagnetic waves, they are arranged in order from low to high (10 4 -10 22 Hz), the electromagnetic spectrum can be divided into radio waves (long wave (1×10 5 -3×10 5 Hz), AM (3×10 5 -3×10 6 Hz), shortwave (3×10 6 Hz), ultrashort wave (3×10 6 -3×10 8 Hz)), microwave (3×10 8 -3×10 11 Hz), infrared (1.3×10 10 -4×10 14 Hz), visible light (4.2×10 14 -7.8×10 14 Hz), UV (8×10 14 -3×10 16 Hz), x-rays (3×10 16 -3×10 18 Hz) and gamma rays (3×10 18 -3×10 22 Hz). In low-frequency and short-wave, radio waves are generated by the periodic mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29L7/00
CPCB29C70/34B29C70/54B29L2007/00
Inventor 王策张楠姬鹤金昌显
Owner 吉林省贞靓科技有限公司
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