Antibacterial composite nanometer fiber high-efficiency air filtering material and preparation method thereof

A high-efficiency air filtration and composite nanofiber technology, which is applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of low filtration efficiency, poor filtration ability and roughness of oily substances, and achieve simple preparation process and high filtration efficiency High and good protective effect

Active Publication Date: 2014-01-22
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of material has the advantages of simple production process and mass production, it is generally hard and rough in texture, and has low filtration efficiency for small particles in the air, and lacks functions such as anti-virus and sterilization. The filtered oily substances have poor filtering ability, and cannot protect human health well in severe environments

Method used

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  • Antibacterial composite nanometer fiber high-efficiency air filtering material and preparation method thereof

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Effect test

Embodiment 1

[0039]A preparation method of an antibacterial composite nanofiber high-efficiency air filter material: (1) Dissolve 3 g of polyester chips in 15 ml of a mixed solvent (TFA: dichloromethane DCM at a ratio of 4:1), and stir to dissolve. (2) Add 1 part of silver nitrate to dimethylformamide DMF solvent and stir to dissolve, then add 99 parts of polyacrylonitrile chips and stir to dissolve, the mass fraction of polyacrylonitrile is 28w%; (3) Mix the two polymer solutions Add them into two syringes respectively, use a drum receiving device, control the spinning voltage to 18KV, extrusion speed to 0.001mm / s, receiving distance to 15cm, and spin interwoven fiber film with a thickness of 100μm. The diameter of the polyester electrospun fiber in the interwoven film is about 900nm, and the diameter of the silver-containing polyacrylonitrile fiber is about 300nm; (4) Dissolve 1.7g of nylon 6 slices in 15ml of formic acid, add it to the syringe, and control the spinning voltage to 20KV, ...

Embodiment 2

[0041] A preparation method of an antibacterial composite nanofiber high-efficiency air filter material: (1) Dissolve 3g of polyester chips in 15ml of a mixed solvent (TFA:DCM is 4:1), and stir to dissolve. (2) Add 1 part of silver nitrate to ethanol solvent and stir to dissolve, then add 99 parts of polyvinylpyrrolidone powder and stir to dissolve, the volume fraction of polyvinylpyrrolidone is 25%; (3) Add the two polymer solutions to two In the injector, a drum-type receiving device is used, the spinning voltage is controlled to 18KV, the extrusion speed is 0.001mm / s, and the receiving distance is 15cm, the interwoven fiber film is spun out with a thickness of 100μm. The diameter of the polyester electrospun fiber in the interwoven film is about 900nm, and the diameter of the silver-containing polyvinylpyrrolidone fiber is about 200nm; (4) Dissolve 1.7g of nylon 6 slices in 15ml of formic acid, add it to the syringe, and control the spinning voltage to 20KV. The receiving d...

Embodiment 3

[0043] A preparation method of an antibacterial composite nanofiber high-efficiency air filter material: (1) Dissolve 3g of polyester chips in 15ml of a mixed solvent (TFA:DCM is 4:1), and stir to dissolve. (2) Add 1 part of silver nitrate to the mixed solvent of dichloromethane and DMF (the volume ratio is DCM: DMF is 4:1) and stir to dissolve, then add 99 parts of polylactic acid slices and stir to dissolve, the mass fraction of polylactic acid 8w%; (3) Add the two polymer solutions into two syringes respectively, use a drum-type receiving device, control the spinning voltage to 18KV, the extrusion speed to 0.001mm / s, and the receiving distance to 15cm to spin interlaced Fibrous membrane with a thickness of 100 μm. The diameter of the polyester electrospun fiber in the interwoven film is about 900nm, and the diameter of the silver-containing polylactic acid fiber is about 400nm; (4) Dissolve 1.7g of nylon 6 slices in 15ml of formic acid, add it to the syringe, control the sp...

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Abstract

The invention relates to an antibacterial composite nanometer fiber high-efficiency air filtering material and a preparation method thereof, and belongs to the field of preparation of air filtering materials. The antibacterial composite nanometer fiber high-efficiency air filtering material sequentially comprises a non-woven fabric support layer, a filter layer and a nanometer fiber filter layer, wherein the filter layer is obtained by blending antibacterial fibers and micrometer fibers. When harmful air which contains bacteria and viruses passes through the antibacterial composite nanometer fiber high-efficiency air filtering material, the antibacterial composite nanometer fiber high-efficiency air filtering material disclosed by the invention can achieve antiviral and antibacterial effects and has high filter efficiency effect on tiny particles contained in air; the antibacterial composite nanometer fiber high-efficiency air filtering material disclosed by the invention has the advantages of antibacterial effect, and high filter efficiency and relatively lower resistance on the tiny particles contained in air, can achieve the filter efficiency on oily DOP (Dioctyl-Phthalate) particles with the grain diameters of 0.3 micrometers at 99.99% and achieve the filter efficiency on sodium chloride particles of 0.07-0.2 micrometers more than 99.99%, has the advantages of light weight, softness, and the like in practical application and can be used for preparing antibacterial protective articles, such as a mask, a protective mask and application protective clothes.

Description

technical field [0001] The invention relates to a composite nanofiber high-efficiency air filter material and a preparation method thereof. The material has good antibacterial performance and belongs to the field of air filter material preparation. Background technique [0002] In recent years, with the advancement of science and technology and the continuous development of industry, the rapid economic growth has made the problem of environmental pollution and the deterioration of surrounding air quality increasingly serious. The environmental monitoring center has increased the detection of PM10 (inhalable particles, particles with a diameter of less than or equal to 10 microns in the atmosphere) and PM2.5 (inhalable particles, particles with a diameter of less than or equal to 2.5 microns in the atmosphere). In urban areas such as North China and East China, the PM2.5 content in the atmosphere seriously exceeds the standard, causing the well-known smog weather and seriousl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B33/00B32B27/00B32B27/18
Inventor 李从举王娇娜李丽
Owner BEIJING INST OF CLOTHING TECH
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