High-efficiency low-resistance PM 2.5 antibacterial mildew-proof filter material and preparation method thereof

A technology of antibacterial and anti-mildew filter materials, which is applied in the field of public environmental protection and sanitation, can solve the problems of limiting the research of PM2.5 anti-bacterial and anti-mildew filter materials, lack of strength, and high filtration resistance, etc., achieve long-lasting anti-bacterial and anti-mold effects, and increase exposure Good effect of area and composite effect

Active Publication Date: 2019-11-05
CHINA ACAD OF BUILDING RES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the melt-blown filter material has two unsolvable defects: one is that the filtration resistance is very large; the other is that its strength is very low and basically has no strength.
Chinese Patent Authorization No. CN206391866U, titled "Automotive Air Conditioner Filter Antibacterial, Bacteriostatic and Mildew-proof Filter Element", the antibacterial and mildew-resistant filter element of this patent is composed of primary effect barrier layer, filter cotton layer and support layer, the primary effect barrier layer is soaked Or spray nano-silver particles on the upper and lower surfaces to achieve antibacterial and anti-mildew effects. The anti-bacterial rate is over 99.9%, and the anti-mildew level reaches "0", but the wind resistance is large and the durability is poor.
[0006] However, traditional methods have synergistic problems with key indicators such as production efficiency, pressure difference, density and durability, which has become a key common technical problem that limits the research on PM2.5 antibacterial and anti-mildew filter materials.
For example, the current low wind resistance air filter element has a wind resistance of 20-30Pa and a filtration efficiency of 99.7%.

Method used

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  • High-efficiency low-resistance PM 2.5 antibacterial mildew-proof filter material and preparation method thereof
  • High-efficiency low-resistance PM 2.5 antibacterial mildew-proof filter material and preparation method thereof
  • High-efficiency low-resistance PM 2.5 antibacterial mildew-proof filter material and preparation method thereof

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Effect test

Embodiment 1

[0044] refer to figure 1 Shown, the preparation method of high-efficiency low-resistance PM2.5 antibacterial mildew-proof filter material comprises the following steps:

[0045] a, PM2.5 preparation of antibacterial and antifungal polymer solution

[0046] After the mass fraction is 15% polylactic acid, 80% dichloromethane solution and 5% average diameter of 10nm silver nanoparticles mixed, the temperature is raised to 40 ° C and mechanically stirred for 3h to obtain a polylactic acid solution containing silver nanoparticles.

[0047] b. Preparation of PM2.5 antibacterial and mildew-proof filter support layer

[0048]The polylactic acid solution containing nano-silver particles is injected into a centrifugal spinning tank with a spinning hole diameter of 100 μm, and at the same time, the rotating speed of the spinning tank is increased to 4000r / min at a rate of 50r / s, and the polylactic acid solution containing nano-silver particles is Under the action of centrifugal force, ...

Embodiment 2

[0055] According to the above method, the preparation method of high-efficiency and low-resistance PM2.5 antibacterial and mildew-proof filter material comprises the following steps:

[0056] a, PM2.5 preparation of antibacterial and antifungal polymer solution

[0057] After mixing 30% polyurethane by mass fraction, 69% dimethylformamide solution and 1% titanium dioxide nanoparticles with an average diameter of 20nm, the temperature was raised to 60°C and mechanically stirred for 2 hours to obtain a polyurethane solution containing titanium dioxide nanoparticles.

[0058] b. Preparation of PM2.5 antibacterial and mildew-proof filter support layer

[0059] The polyurethane solution containing titanium dioxide nanoparticles is injected into a centrifugal spinning tank with a spinning hole diameter of 300 μm, and at the same time, the speed of the spinning tank is increased to 5000r / min at a rate of 50r / s, and the polyurethane solution containing titanium dioxide nanoparticles i...

Embodiment 3

[0066] According to the above method, the preparation method of high-efficiency and low-resistance PM2.5 antibacterial and mildew-proof filter material comprises the following steps:

[0067] a, PM2.5 preparation of antibacterial and antifungal polymer solution

[0068] After mixing polyacrylonitrile with a mass fraction of 25%, 72% dimethylformamide solution, and 3% zinc oxide nanoparticles with an average diameter of 50nm, the temperature was raised to 50°C and mechanically stirred for 1 hour to obtain zinc oxide-containing nanoparticles. solution of polyacrylonitrile.

[0069] b. Preparation of PM2.5 antibacterial and mildew-proof filter support layer

[0070] The polyacrylonitrile solution containing zinc oxide nanoparticles was injected into a centrifugal spinning pot with a spinning hole diameter of 200 μm, and at the same time, the rotating speed of the spinning pot was increased to 5500 r / min at a rate of 50 r / s, and the polyacrylonitrile solution containing zinc oxid...

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Abstract

The invention relates to a high-efficiency low-resistance PM 2.5 antibacterial mildew-proof filter material and a preparation method thereof, and the method comprises the following steps: preparing aPM 2.5 antibacterial mildew-proof polymer solution, preparing a PM 2.5 antibacterial mildew-proof filter support layer, preparing a PM 2.5 high-efficiency low-resistance electrostatic cotton filter layer and ultrasonically compounding to prepare the high-efficiency low-resistance antibacterial mildew-proof filter material. According to the invention, superfine polymer fiber containing antibacterial and mildew-proof nano particles is rapidly prepared by a centrifugal spinning method, so that the growth of microorganisms can be effectively inhibited, and secondary pollution of filter materials can be prevented; the high-efficiency and low-resistance electrostatic cotton filter layer obtained by high-voltage corona treatment has a filtering efficiency of 99% or more of PM 2.5 and an air resistance of 10 Pa or less, can effectively block microorganisms, particles such as PM 2.5 and the like, and simultaneously the microorganisms adsorbed and intercepted on the high-efficiency and low-resistance electrostatic cotton filter layer can also be effectively killed by the antibacterial mildew-proof filter support layer. The preparation method has the advantages of simple process, low equipment requirement, convenient operation and control, high production efficiency and easy realization of industrial production.

Description

technical field [0001] The invention relates to a preparation method of a high-efficiency and low-resistance PM2.5 antibacterial and mildew-proof filter material, which belongs to the field of public environmental protection and sanitation. Background technique [0002] In recent years, my country's air quality has been improving slowly, and the total emission of air pollutants has been high for many years, especially the concentration of particulate matter such as PM2.5 and PM 10 has seriously exceeded the standard, which has seriously affected the sustainable development of the country's social economy and people's lives and health. . To this end, my country has introduced a series of environmental protection policies and measures, fully reflecting the country's unprecedented attention and decision on environmental protection, and further taking non-woven fabric filter materials with high efficiency, low resistance, long life, and coordinated management of harmful substance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16D01F1/10D01F6/54D01F6/92D01F6/94D04H1/4291D04H1/46D06M17/00
CPCB01D39/1615B01D39/1623D04H1/4291D04H1/46D06M17/00D01F1/103D01F6/92D01F6/94D01F6/54B01D2239/0492B01D2239/0442B01D2239/0636B01D2239/0618Y02A50/2351
Inventor 王清勤田小虎赵力吴刚刘春砚吴龙涛仇丽娉
Owner CHINA ACAD OF BUILDING RES
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