Multifunctional filtering material and preparation method thereof

A filter material and multi-functional technology, applied in the direction of filtration separation, membrane filter, separation method, etc., can solve the problems of limited antibacterial effect of non-woven fabrics, insufficient antibacterial effect, complicated preparation process, etc., to achieve excellent adsorption, preparation The method is simple and the filtering effect is good

Active Publication Date: 2020-02-21
DONGGUAN YIMAO FILTER MEDIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the nano-carbon fiber composite layer in the non-woven fabric is complicated, but it only has a certain adsorption effect on the peculiar smell in the air, and the adsorption effect on harmful gases such as formaldehyde is not mentioned; at

Method used

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  • Multifunctional filtering material and preparation method thereof
  • Multifunctional filtering material and preparation method thereof
  • Multifunctional filtering material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] The present invention provides a method for preparing a multifunctional filter material, which includes the following steps:

[0031] S1. Prepare the support layer non-woven fabric and conduct antibacterial treatment on it;

[0032] S2. Superimpose the upper surface of the filter layer non-woven fabric with the lower surface of the protective layer non-woven fabric and perform ultrasonic compounding; S3, unwind the support layer non-woven fabric after the antibacterial treatment, and place it on the support layer non-woven fabric Spray hot melt adhesive evenly on the upper surface of the hot melt adhesive, then evenly sprinkle the activated carbon particles on the upper surface of the support layer non-woven fabric sprayed with hot melt adhesive, and then spray the hot melt adhesive evenly on the upper surface of the activated carbon particles;

[0033] S4. The lower surface of the non-woven filter layer is superimposed on the upper surface of the activated carbon particles sp...

Example Embodiment

[0045] Example 1

[0046] This embodiment provides a method for preparing a multifunctional filter material, including the following steps:

[0047] S1. Add a mixed solution of 10mL silver nitrate (30mmol / L) and 15mL copper nitrate (40mmol / L) into 30mL carboxymethyl chitosan aqueous solution (50mmol / L), adjust the pH value to 6, and ultrasound at room temperature Shake for 1 hour to prepare an antibacterial finishing solution. At this time, the molar ratio of silver nitrate, copper nitrate and carboxymethyl chitosan in the antibacterial finishing solution is 1:2:5, silver nitrate, copper nitrate and carboxymethyl chitosan The total mass of the antibacterial finishing liquid accounted for 1.7% of the total mass of the antibacterial finishing solution; and then the gram weight obtained by acupuncture method was 70g / m 2 、Polypropylene needle-punched non-woven fabric with a thickness of 0.4mm is used as the support layer non-woven fabric, soak it in the prepared antibacterial finishing...

Example

[0066] Examples 2 to 8 and Comparative Examples 1 to 4

[0067] Examples 2 to 8 and Comparative Examples 1 to 4 respectively provide a method for preparing a multifunctional filter material. Compared with Example 1, the difference is that the pH value of the antibacterial finishing liquid and the ratio of each raw material are changed. Table 4 shows the molar ratio of the pH value of the antibacterial finishing liquid corresponding to the examples and comparative examples to the silver nitrate, copper nitrate and carboxymethyl chitosan in the antibacterial finishing liquid and their percentages in the antibacterial finishing liquid.

[0068] Table 4 The pH value of the antibacterial finishing liquid and the ratio of each raw material in Examples 2-8 and Comparative Examples 1-4

[0069]

[0070] The antibacterial and antiviral effects of the multifunctional filter materials prepared in Examples 2 to 8 and Comparative Examples 1 to 4 were tested, and the results are shown in Table 5. ...

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Abstract

The invention discloses a multifunctional filtering material and a preparation method thereof. According to the method, a supporting layer non-woven fabric is subjected to antibacterial treatment by preparing an antibacterial finishing liquid containing silver nitrate, copper nitrate and carboxymethyl chitosan; and the supporting layer non-woven fabric subjected to antibacterial treatment, an active carbon layer, a filtering layer non-woven fabric and a protection layer non-woven fabric are stacked layer by layer and compounded to prepare a multifunctional filtering material capable of comprehensively filtering solid pollutants, gaseous pollutants and microbial pollutants. According to the invention, by adopting the technical scheme, the multifunctional filtering material can achieve efficient antibacterial and long-acting antibacterial effects; by adjusting the gram weight and the thickness of each layer of the material and the related process parameters of the multifunctional filtering material, the comprehensive optimal filtering effect is achieved; and the preparation method is simple, the product structure is reasonable, and the application range is wide.

Description

technical field [0001] The invention relates to the field of air filter materials, in particular to a multifunctional filter material and a preparation method thereof. Background technique [0002] With the continuous development of society and the acceleration of industrialization, the problem of air pollution is becoming more and more serious. The fine particles, harmful gases and various bacteria, viruses and other microorganisms in the air are seriously threatening people's health. higher requirement. Among all kinds of air filter materials, non-woven fabrics have been widely used due to their simple production process, low cost, and good filterability. However, due to the single effect of traditional non-woven fabrics, it is difficult to filter out solid particles, harmful gases and microorganisms in the air at the same time, and the filtering effect is limited, which has gradually failed to meet people's requirements. Therefore, it is necessary to perform multi-effec...

Claims

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Application Information

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IPC IPC(8): B01D39/14B01D39/16B32B27/02B32B27/32B32B27/36B32B9/02B32B9/04B32B9/00
CPCB01D39/14B01D39/16B32B5/022B32B5/26B32B5/30B32B5/16B32B5/24B01D2239/0442B32B2262/0276B32B2262/0253B32B2262/062B32B2264/108
Inventor 吴龙涛陈利军宋宝祥王亚飞刘双全
Owner DONGGUAN YIMAO FILTER MEDIA
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