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Air filtration membrane with functions of killing bacteria and removing formaldehyde

An air filtration and fiber membrane technology, applied in the field of sterilizing and aldehyde-removing air filtration membranes, can solve the problems that formaldehyde and other pollutants cannot be effectively removed, easily cause respiratory diseases, and the filtering effect is uneven, so as to improve catalytic decomposition efficiency and breathability Good performance and good filtering effect

Active Publication Date: 2017-08-18
保定源汉升新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the filter material of masks on the market mainly emphasizes the filtering function, and the filtering effect is also uneven. Even if this type of filter material blocks solid particles in the air, it still cannot effectively remove pollutants such as formaldehyde, and is also used The filtered particles and bacteria are easy to attach to the parts of the mask close to the mouth and nose, causing the growth of bacteria and secondary pollution, which can easily cause respiratory diseases and endanger human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A bactericidal and aldehyde-removing air filter membrane is prepared by the following method:

[0030] (1) Add 3.4g of n-butyl titanate and 2g of sulfosalicylic acid into 9ml of absolute ethanol, and stir for 1 hour to obtain solution A; add 3g of polyvinylpyrrolidone to 7ml of deionized water, and stir for 2 hours to mix evenly Obtain solution B; mix solution A and solution B with magnetic force for 2 hours to mix the solutions evenly, and obtain spinning precursor solution A;

[0031] (2) The spinning precursor solution A obtained in step (1) is added to the liquid storage mechanism of the electrospinning device, and electrospinning is performed to form a fiber film on the collecting plate to obtain polyvinylpyrrolidone / TiO 2 Precursor composite nanofiber membrane, the spinning voltage is 15kV, the spinning distance is 10cm, and the spinning time is 40 minutes;

[0032] (3) The sample obtained in step (2) is placed in a tube furnace, and in an oxygen atmosphere, the ...

Embodiment 2

[0048] Embodiment 2 antibacterial test:

[0049] 1. Experimental bacteria: Staphylococcus aureus (ATCC6538)

[0050] 2. Strain culture medium: nutrient agar medium and nutrient broth medium.

[0051] 3, bacteriostasis experiment divides 1 experimental group and 4 control groups, and experimental group uses the air filter membrane of embodiment 1, and control group 1 is the qualitative filter paper (blank control) of Shuangquan brand, and control group 2 is the pure filter paper of control example 1. TiO 2 Nanofiber film, control group 3 is the activated carbon nanofiber film of comparative example 2, and control group 4 is the nano silver antibacterial fiber film of comparative example 3.

[0052] 4. Specific experimental steps:

[0053] (1) Preparation of drug-sensitive tablets: samples from 1 experimental group and 4 control groups were punched into discs with a diameter of 6 mm and placed in clean and dry penicillin empty bottles, and 5 sample discs were prepared for eac...

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Abstract

The invention discloses an air filtration membrane with functions of killing bacteria and removing formaldehyde. The air filtration membrane is of a three-layer nanofiber membrane composite structure, wherein the upper layer is an activated carbon nanofiber membrane, the middle layer is a pure TiO2 nanofiber membrane, and the lower layer is a nano-silver antibacterial fiber membrane; the pure TiO2 nanofiber membrane is prepared from a high polymer material / TiO2 precursor composite nanofiber membrane through heat treatment, and the high polymer material / TiO2 precursor composite nanofiber membrane is prepared with an electrospinning method; the activated carbon nanofiber membrane is an electrospun activated carbon nanoparticle / high polymer material composite nanofiber membrane; the nano-silver antibacterial fiber membrane is an electrospun nano-silver particle / high polymer material composite nanofiber membrane. The air filtration membrane not only can filter solid particulate pollutants very well, but also is good in breathability, and can remove and decompose formaldehyde in air and filter and kill harmful bacteria in air, thereby guaranteeing health of a respiratory system better.

Description

technical field [0001] The invention belongs to the application field of anti-pollution air filtration and purification, and in particular relates to a bactericidal and aldehyde-removing air filtration membrane, which can be used as a mask filter element material. Background technique [0002] Air pollution is a phenomenon in which the concentration of pollutants in the atmosphere reaches a harmful level, exceeds the environmental quality standard, destroys the ecological system and normal living conditions of human beings, and causes harm to people and things. In addition to the air pollution caused by the industrialization process, the indoor air pollution caused by decoration cannot be ignored. There are more than 500 kinds of volatile substances in the indoor air, among which there are more than 20 kinds of carcinogens and more than 200 kinds of pathogenic viruses. The most harmful ones are: formaldehyde, benzene, ammonia and trichlorethylene, etc. Indoor air pollution m...

Claims

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Application Information

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IPC IPC(8): B01D71/38B01D69/02B01D69/12B01D67/00B01D39/14B01D53/86A61L9/00A61L9/18A62B23/02
Inventor 袁国防李立群张熙刘丹
Owner 保定源汉升新材料科技有限公司
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