Mask capable of resisting bacteria and killing viruses based on dim light catalysis and derivative coating material

Abstract

The invention belongs to the field of environmental functional materials and the technical field of health care, and relates to a mask capable of resisting bacteria and killing viruses based on dim light catalysis and a derivative coating material. The antivirus mask comprises metal hydroxide particles in a polypropylene melt-blown cloth layer, and the metal hydroxide particles are activated under the irradiation of dim light; hydrogen peroxide can be decomposed to continuously generate hydroxyl radicals or oxygen anions, cell membranes of pathogenic bacteria, protein shells of viruses and nucleic acid structures are destroyed, so that broad-spectrum sterilization and poison resistance are achieved. The efficient and long-acting killing of viruses and pathogenic bacteria enriched on the surface is realized by utilizing metal ion photocatalysis, and the risk of pathogen infection is reduced. The mask has a function which a traditional mask does not have, is derived into a new disinfection coating material, and is also a new direction of surface material technology development in the field. According to the invention, weak light is used for photocatalytically killing viruses, and the mask has the advantages of broad-spectrum sterilization and disinfection, no secondary pollution, low cost, long acting time, reusability and the like, and is worthy of being vigorously popularized.

Description

technical field [0001] The invention belongs to both the field of environmental functional materials and the field of health care technology, and relates to a photocatalytic antivirus material and a protective mask, in particular to a mask and a derived coating material based on low-light photocatalytic antibacterial antivirus, which has high efficiency and broad Spectrum sterilization function and can be used repeatedly. Background technique [0002] Since the 21st century, various viral infections have emerged in an endless stream, such as bird flu, H1N1 virus, SARS virus, swine fever virus, new coronavirus COVID-19 virus, etc. A virus is an individual tiny non-cellular microorganism (generally 20-200nm) with a simple structure consisting of only a layer of protein or lipoprotein (phospholipid bilayer) as a protective shell and a nucleic acid (DNA or RNA). Currently commonly used chemical disinfection methods include Cl-containing disinfectant treatment, H 2 o 2 Soluti...

AI Technical Summary

Problems solved by technology

However, there are still 3 outstanding problems in the protection of masks in the protection of pathogens (bacteria, viruses, etc.): (1) the ability to intercept viruses with small particle sizes is limited, and they can only intercept large droplets of viruses in the air

When people change masks, there is a high potential for pathogens to transfer from the used mask to the surface of the body, causing infection

If the discarded masks are not disposed of in strict accordance with the standardized methods, a large number of pathogens attached to the masks can easily become a source of infection; (3) Both N95 masks and disposable medical masks are consumable masks and cannot be reused

With the prolongation of use time and the increase of trapped particles, the electrostatic adsorption performance of the polypropylene ultra-fine electrostatic fiber cloth in the mask will gradually decay, the porous physical structure will be blocked, and the pathogen interception efficiency will decrease, resulting in a decline in protective performance.

With the global pandemic, a large number of disposable masks are discarded after use, which not only causes environmental pollution and potential infection risks, but also leads to a great waste of related resources

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