Recyclable, efficient, efficient, low-resistance, antibacterial and haze-preventing air filtration material

An air filter material and anti-smog technology, which is applied in the fields of filtration and separation, membrane filters, chemical instruments and methods, etc., can solve the problems of not being able to fully meet the requirements of high-efficiency filter materials, difficult to effectively filter sub-micron particles, and short service life , to achieve the effect of repeated reuse, increased antibacterial properties, and easy operation

Active Publication Date: 2016-10-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although traditional filter materials have high filtration efficiency for particles above the micron level, it is difficult to achieve effective filtration of sub-micron particles, and there are disadvantages such as weak anti-pollution ability and short service life, which can no longer fully satisfy people's demand for high efficiency. filter material requirements

Method used

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  • Recyclable, efficient, efficient, low-resistance, antibacterial and haze-preventing air filtration material
  • Recyclable, efficient, efficient, low-resistance, antibacterial and haze-preventing air filtration material
  • Recyclable, efficient, efficient, low-resistance, antibacterial and haze-preventing air filtration material

Examples

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Effect test

Embodiment 1

[0030] A recyclable, high-efficiency, low-resistance, antibacterial and anti-fog air filter material is prepared by the following method:

[0031] (1) Polyamide 66 is dissolved in a mixed solvent of formic acid and acetic acid (3:1), and the spinning solution (concentration 15%) is configured. Electrospinning parameters, voltage 18KV, propulsion volume 0.2mL / h, temperature 50°C, receiving distance 18cm, spinning time 30min, using PP melt-blown cloth as the base to prepare nanofibers composited on the substrate layer;

[0032] (2) Preparation of nano-silver particle solution: take silver nitrate of 0.019g, 0.019g sodium citrate, take silver nitrate as silver precursor, sodium citrate as reducing agent; Silver nitrate is added to deionized water earlier, oil Heating the bath to 120°C to boil the silver nitrate solution, adding sodium citrate solution under vigorous magnetic stirring, and reacting for 1 hour to obtain the nano-silver particle solution;

[0033] (3) Dilute hydroc...

Embodiment 2

[0036] A recyclable, high-efficiency, low-resistance, antibacterial and anti-fog air filter material is prepared by the following method:

[0037] (1) Dissolve polyamide 6 (PA6) in formic acid solvent, prepare spinning solution (concentration 13%), electrospinning parameters, voltage 12kV, propulsion volume 0.5mL / h, temperature 60°C, receiving distance 12cm, spinning Filament time 30min, using PP melt-blown cloth as the base to prepare nanofibers composited on the substrate layer;

[0038] (2) Preparation of nano silver particle solution: take silver nitrate of 0.008g, sodium citrate of 0.019g, sodium borohydride 0.014g, take silver nitrate as silver precursor, sodium citrate and sodium borohydride as reducing agent; First add silver nitrate and sodium citrate to deionized water, stir magnetically at room temperature to completely dissolve and form a colorless transparent liquid, then dissolve sodium borohydride in 5ml deionized water, add it to the colorless transparent liqui...

Embodiment 3

[0041] A recyclable, high-efficiency, low-resistance, antibacterial and anti-fog air filter material is prepared by the following method:

[0042] (1) Dissolve polyamide 610 in formic acid solvent, configure spinning solution (concentration 15%), electrospinning parameters, voltage 19KV, propulsion volume 0.3mL / h, temperature 50°C, receiving distance 18cm, spinning time 30min , using PP knitted fabric as the base to prepare nanofibers composited on the substrate layer;

[0043] (2) Preparation of nano-silver particle solution: take silver nitrate of 0.017g, 0.020g sodium citrate, take silver nitrate as silver precursor, citric acid as reducing agent; Silver nitrate is added to deionized water earlier, oil bath Heat to 120°C to boil the silver nitrate solution, add sodium citrate solution under the condition of vigorous magnetic stirring, and obtain the nano-silver particle solution after 0.5h of reaction;

[0044] (3) Use dilute hydrochloric acid to adjust the pH=7 of the nan...

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Abstract

The invention belongs to the technical field of new materials and particularly relates to a recyclable, efficient, efficient, low-resistance, antibacterial and haze-preventing air filtration material. The air filtration material includes a base material layer and a filter layer, wherein the filter layer is an antibacterial agent supported nanofiber layer and is prepared by adopting an in-situ growth method, and the base material layer is made of a non-woven fabric. The air filtration material produces the step-by-step interception-barrier effect on PM2.5 and can efficiently intercept PM2.5 tiny aerosol particles, the 2.5-micron particle filtering efficiency can be up to 100%, the efficiency of filtering 0.5-micron particles and 0.3-micron particles can be up to 99%, the air resistance is 37 Pa, and the gram weight is 22.89 g/m<2>. The air filtration material is simple, convenient and easy to operate, smoke particles absorbed onto the material can be removed through washing after the material fully absorbs smoke, and multi-time repeated utilization is achieved.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a recyclable, high-efficiency, low-resistance, antibacterial and anti-fog air filter material. Background technique [0002] With the development of science and technology, filter materials have been widely used in the fields of air purification, water purification, waste treatment and food processing. According to a report, less than 1% of the 500 largest cities in China meet the air quality standards recommended by the World Health Organization. At the same time, 7 of the 10 most polluted cities in the world are in China. As the last barrier to resist smog and protect health, filter materials have become the focus of people's reliance and general attention. [0003] Although traditional filter materials have high filtration efficiency for particles above the micron level, it is difficult to achieve effective filtration of sub-micron particles, and there are d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14
CPCB01D39/14B01D2239/025B01D2239/0442B01D2239/0618B01D2239/10B01D2239/1291
Inventor 董丽杰琚艳云陈卓赵广辉张扬
Owner WUHAN UNIV OF TECH
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