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Silver filter element based on electrofluid printing and preparation method and application thereof

A technology of electrofluid and silver filter elements, applied in the fields of application, separation methods, chemical instruments and methods, etc., can solve the problem of difficulty in mixing nano-antibacterial materials and fiber materials evenly, poor structural stability of nano-fiber aggregates, and difficulty in guaranteeing anti-bacterial effects, etc. problems, achieve excellent antibacterial performance and antiviral performance, comfortable wearing experience, and low cost

Active Publication Date: 2021-01-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial and antiviral non-woven fabrics are prepared by electrospinning technology. Electrostatic nanofiber materials generally have outstanding problems such as weak mechanical properties and poor structural stability of nanofiber aggregates. Uniformity, so the antibacterial effect is difficult to guarantee and the production cost is high

Method used

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  • Silver filter element based on electrofluid printing and preparation method and application thereof
  • Silver filter element based on electrofluid printing and preparation method and application thereof
  • Silver filter element based on electrofluid printing and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In this embodiment, a high-density silver filter based on electrofluid printing is provided, and the preparation method is as follows:

[0042] (1) Substrate cleaning: Put the substrate into an ultrasonic cleaner, and use recovered isopropanol, recovered tetrahydrofuran, alkaline cleaning solution, deionized water, and isopropanol to vibrate ultrasonically for 10 minutes, respectively.

[0043] (2) Substrate drying: put the cleaned non-woven fabric into an oven, and dry it at 70°C.

[0044] (3) Printing silver grids: use electrofluidic printer SIJ-S150 to electrofluidically print the nano-silver sol, and print a grid pattern perpendicular to the direction of the non-woven fabric (the plane where the tiled non-woven fabric is located) with an average interval of 3 μm Silver grid; parameters of electrofluid printing: voltage 700V, voltage waveform is triangular wave, voltage frequency 1000Hz, moving speed 5mm / s.

[0045] (4) Curing: Put the printed non-woven fabric in a ...

Embodiment 2

[0048] The difference from Example 1 is that the interval of the printed silver grid is 2 μm.

Embodiment 3

[0050] The difference from the example is that the distance from the printed silver grid is 5 μm.

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Abstract

The invention discloses a silver filter element based on electrofluid printing and a preparation method and application of the silver filter element. The printed silver filter element is obtained by printing high-density silver grids on a substrate non-woven fabric through electrofluid printing. The method for printing the silver filter element comprises the steps of cleaning and drying a substrate non-woven fabric, then printing silver grids on the substrate non-woven fabric by adopting an electrofluid printer, and annealing and curing the printed non-woven fabric to obtain the silver filterelement. The preparation process is simple, the cost is low, and good antibacterial, antiviral and breathable properties are achieved.

Description

technical field [0001] The invention belongs to the technical field of air filtration, and in particular relates to an electrofluid-based printed silver filter element and its preparation method and application. Background technique [0002] In the current epidemic situation, we are increasingly aware of the importance of effectively blocking and separating solid particles and liquid aerosol particles that are harmful to health during the breathing process. Aerosols are more likely to be inhaled deep into the lungs of the human body, leading to infection of the alveolar tissue of the lower respiratory tract. Therefore, infection through aerosols may lead to more severe clinical symptoms. The diameter of typical droplets and droplet nuclei is about 5 μm, so the pores of the mask must be below its diameter to better play the role of anti-virus and anti-bacteria. [0003] Nano-silver has more effective antibacterial properties than other silver salts because they have a very l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B01D46/10A41D13/11A41D31/02A41D31/30A41D31/14
CPCA41D13/1192A41D31/02A41D2500/30A41D31/14A41D31/30B01D46/0028B01D46/10
Inventor 姚日晖梁宏富宁洪龙符晓陈俊龙李依麟李志航梁志豪张旭彭俊彪
Owner SOUTH CHINA UNIV OF TECH
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