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Antibacterial high efficiency air filtration membrane and preparation method thereof

A high-efficiency air filtration and polymer technology, applied in filtration and separation, separation methods, dispersed particle filtration, etc., can solve the problems of bacterial growth and secondary damage of micro-particle filtration capacity, and achieve inhibition of bacterial growth, prevention of secondary damage, The effect of improving the filtration efficiency

Active Publication Date: 2019-02-01
泉州市恒毅企业服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the purpose of this invention is to carry out a series of modifications to the air filter membranes commonly used in the market, so that the air filter membranes have higher filtration efficiency, and at the same time have better filtration capabilities for tiny particles, and have better Excellent antibacterial performance, which solves the problem of secondary damage to the filtration ability of tiny particles and the growth of bacteria in the air filter membranes currently on the market

Method used

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  • Antibacterial high efficiency air filtration membrane and preparation method thereof
  • Antibacterial high efficiency air filtration membrane and preparation method thereof
  • Antibacterial high efficiency air filtration membrane and preparation method thereof

Examples

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Embodiment 1

[0029] The syringe includes a barrel body and a dispensing needle,

[0030] see Figure 1 to Figure 3 As shown, an antibacterial high-efficiency air filter membrane of this embodiment includes a substrate and a composite nanofiber layer, the composite nanofiber layer is covered on the substrate, and the composite nanofiber layer is completely closely attached to the substrate. The composite nanofiber layer is woven from at least three kinds of materials, the composite nanofiber layer presents a bead string structure, and the morphology of the beads is spherical, ellipsoidal, spindle-shaped or elongated spindle-shaped; the beads The average width is 200-2000 nm, and the average length is 500-3000 nm. The air filter membrane in this embodiment has a double-layer structure.

[0031] In this embodiment, the base is a non-woven fabric, and its material is one or more of polypropylene, polyacrylonitrile, polyethylene, and the like. The composite nanofiber layer is covered on the ...

Embodiment 2

[0039] Step A, prepare 0.5mg graphene / polyvinylidene fluoride precursor solution A, weigh 0.5mg graphene, weigh 1g polyvinylidene fluoride, add 1g polyvinylidene fluoride to 5mLN,N-dimethylformamide and 5mL dimethyl ketone, and stir evenly, then add 0.5mg graphene into the polyvinylidene fluoride solution, stir evenly, and ultrasonically disperse, so that the precursor solution A is evenly dispersed.

[0040] Step B, prepare 0.5mg poly N,N-dimethylaminoethyl methacrylate / polyvinylidene fluoride precursor solution B, weigh 0.5mg poly N,N-dimethylaminoethyl methacrylate, weigh 1g of polyvinylidene fluoride, add 1g of polyvinylidene fluoride to 5mL N,N-dimethylformamide and 5mL dimethyl ketone, stir evenly, then add 0.5mg polymethacrylic acid N,N-dimethyl Add aminoethyl ester into the polyvinylidene fluoride solution, stir evenly, and disperse ultrasonically, so that the precursor solution B is uniformly dispersed.

[0041] Step C, placing the non-woven fabric on the metal rolle...

Embodiment 3

[0044] Step A, prepare 19mg graphene / polyvinylidene fluoride precursor solution A, weigh 19mg graphene, weigh 1g polyvinylidene fluoride, add 1g polyvinylidene fluoride to 5mL dimethyl sulfoxide and 5mL dimethyl Ketone, stir evenly, then add 19mg of graphene into the polyvinylidene fluoride solution, stir evenly, and ultrasonically disperse, so that the precursor solution A is evenly dispersed.

[0045] Step B. Prepare 1 mg of poly(N,N-dimethylaminoethyl methacrylate-polycaprolactone / polyvinylidene fluoride) precursor solution B, and weigh 1 mg of poly(N,N-dimethylaminoethyl methacrylate-polyvinylidene fluoride) Caprolactone, weigh 1g polyvinylidene fluoride, add 1g polyvinylidene fluoride to 5mL dimethyl sulfoxide and 5mL dimethyl ketone, stir evenly, then add 1mg polymethacrylic acid N,N-di Add methylaminoethyl ester-polycaprolactone into the polyvinylidene fluoride solution, stir evenly, and ultrasonically disperse, so that the precursor solution B is evenly dispersed.

[...

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Abstract

The invention relates to the technical field of air filtration and membrane material preparation and particularly relates to an antibacterial high efficiency air filtration membrane. The air filtration membrane comprises a substrate and a composite nanofiber layer. The composite nanofiber layer covers the substrate and is completely in close contact with the substrate. The composite nanofiber layer is composed of at least three materials through weaving. The composite nanofiber layer has a bead string structure. A preparation method of the antibacterial high efficiency air filtration membranecomprises: adding graphene, a cationic polymer and an electret polymer into a volatile organic solvent, setting process parameters, and electrospinning a precursor fluid to the surface of the substrate through an electrospinning device so that the composite nanofiber layer is formed. The antibacterial high efficiency air filtration membrane has a high-efficiency filtration function an can preventsecondary hazards such as bacterial breeding.

Description

technical field [0001] The invention relates to an air filtration composite nanofiber membrane with antibacterial properties, high efficiency and low resistance through modification, and belongs to the technical field of air filtration and membrane material preparation. Background technique [0002] In recent years, with the expansion of the scope of human production activities, the expansion of demand and the rapid development of the economy, the environmental changes have brought a series of severe tests for human survival. Global air pollution is increasing year by year. Since the London smog incident, air quality has become a hot spot of environmental concern in various countries. With my country's reform and opening up, my country's rapid development has also brought about severe air quality problems. From the first appearance of the word "smog" to now it has become a hot topic in people's daily life. The attention of PM2.5 It has pushed the air quality problem to a pea...

Claims

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Application Information

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IPC IPC(8): B01D39/14B01D46/00B01D46/54
CPCB01D39/14B01D46/0001B01D46/0028B01D46/543
Inventor 郑高峰邓世卿姜佳昕柳娟郑建毅刘益芳
Owner 泉州市恒毅企业服务有限公司
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