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Super-infiltration antiviral protective mask and preparation method thereof

An anti-virus and super-wetting technology, which is applied in the direction of protective clothing, chemical instruments and methods, and resistance to media-borne diseases, can solve the problem that medical masks cannot effectively resist the adhesion of bacteria and viruses for a long time, do not have antibacterial and antiviral effects, and cannot Isolation and other issues, to achieve the effect of improving the inactivation rate, high surface energy, and strong electrostatic adsorption

Pending Publication Date: 2022-08-09
株洲绿智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 current commercially available medical masks have many defects due to their design and manufacturing process: on the one hand, although the non-woven fabric layer of the medical masks has certain waterproofness, it cannot isolate large areas of water droplets, and viruses fly Foam, virus aerosol, etc. can adhere to the surface of non-woven fabrics; on the other hand, the middle layer of medical masks is ultra-thin polypropylene melt-blown material, which is usually treated with electret (positive charge). Although it can filter most microorganisms, it is easy to It is neutralized by other negatively charged particles in the environment and fails; these shortcomings make medical masks unable to effectively resist the adhesion of bacteria, viruses, etc. for a long time during use
But this antibacterial and antiviral mask has the following problems: although lysozyme and aminopeptidase can kill bacteria and viruses on the mask, it is limited by the activity of lysozyme and aminopeptidase, and it needs to be used under suitable humidity, temperature and carbon dioxide concentration conditions. The biological activity of the enzyme can only be activated at a low temperature, so this antibacterial and antiviral mask does not have a lasting antibacterial and antiviral effect
But this mask has the following problem: Rose Bengal dye forms singlet oxygen molecules when exposed to light and air. Although this singlet oxygen molecule is a powerful antibacterial agent, it can kill many kinds of bacteria, fungi and viruses. At room temperature in a gas environment, the lifespan of singlet oxygen molecules can be as long as more than 1 hour, so it will cause harm to the human body to a certain extent

Method used

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  • Super-infiltration antiviral protective mask and preparation method thereof
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  • Super-infiltration antiviral protective mask and preparation method thereof

Examples

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preparation example Construction

[0038] The invention provides a preparation method of a super-infiltrating antiviral protective mask, comprising the following steps:

[0039] (1) Preparation of inorganic nanowire mixture: the inorganic nanowires are mixed with anhydrous ethanol and ammonia water with a mass concentration of 25%, stirred by a magnetic stirrer at room temperature, dispersed by ultrasonic at room temperature, ultrasonicated for 15-20min, ultrasonic The power is 80%, and the inorganic nanowire mixed solution is prepared; in this step, ultrasonic dispersion can make the inorganic nanowires disperse uniformly in the absolute ethanol / ammonia mixed solution without agglomeration. Since ammonia water is a weak alkaline solution, it is favorable for the reaction of the polar group fluoropolymer added later.

[0040](2) Preparation of low surface energy inorganic nanowires: adding polar group fluoropolymer and ethyl orthosilicate to the inorganic nanowire mixture prepared in step (1) to prepare a precu...

Embodiment 1

[0063] The preparation method of a kind of super-wetting antiviral protective mask of the present embodiment comprises the following steps:

[0064] (1) Preparation of inorganic nanowire mixed solution: after mixing absolute ethanol and ammonia water with a mass concentration of 25% in a volume ratio of 8:0.1, the absolute ethanol / ammonia solution and silica nanowires are in a mass ratio of 6403: After mixing and stirring at a ratio of 162, ultrasonic dispersion was carried out, and the ultrasonic time was 5 min to prepare a silica nanowire mixture; the solid content of the silica nanowires in the silica nanowire mixture was 2%. The size of the silica nanowires is 10 nm.

[0065] (2) Preparation of low surface energy inorganic nanowires: the mixture of 3,3,3-trifluoropropyltriethoxysilane, ethyl orthosilicate and silica nanowires is 75:3:50 by mass ratio The ratio of 3,3,3-trifluoropropyltriethoxysilane is mixed to prepare a precursor liquid, and the solid content of 3,3,3-tr...

Embodiment 2

[0071] The preparation method of a kind of super-wetting antiviral protective mask of the present embodiment comprises the following steps:

[0072] (1) Preparation of inorganic nanowire mixed solution: after mixing absolute ethanol and ammonia water with a mass concentration of 25% in a volume ratio of 8:0.5, the absolute ethanol / ammonia solution and the silica nanowires are in a mass ratio of 6767: After mixing and stirring at a ratio of 850, ultrasonic dispersion was carried out, and the ultrasonic time was 20 min to prepare a silica nanowire mixed solution; the solid content of the silica nanowires in the silica nanowire mixed solution was 10%. The size of the silica nanowires is 50 nm.

[0073] (2) Preparation of low surface energy inorganic nanowires: Mix (pentafluoroethyl)trimethylsilane, ethyl orthosilicate, and silica nanowires in a mass ratio of 325:13:500, A precursor liquid is prepared, and the solid content of (pentafluoroethyl)trimethylsilane in the precursor li...

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Abstract

The invention relates to a super-infiltration antiviral protective mask and a preparation method thereof, the inner side of a skin-friendly layer is coated with a nano adsorption disinfection super-hydrophilic protective coating, and the outer side of an antibacterial layer is coated with a nano super-droplet-resistant antiviral super-hydrophobic protective coating; the nano super-droplet-resistant antiviral super-hydrophobic protective coating is prepared from the following components: a polar group fluoropolymer, water-based fluorocarbon resin, inorganic nanowires, tetraethoxysilane, absolute ethyl alcohol and ammonia water, the inner side surface nano adsorption disinfection super-hydrophilic protective coating comprises the following components: chitosan quaternary ammonium salt and waterborne polyurethane resin. Due to the fact that the outer side face of the mask is coated with the nanometer super-anti-droplet antiviral super-hydrophobic protective coating, adhesion of virus-containing droplets can be strongly repelled in a long-acting mode; due to the fact that the inner side face of the mask is coated with the nanometer adsorption disinfection super-hydrophilic protective coating, the nanometer adsorption disinfection super-hydrophilic protective coating has extremely high surface energy and extremely strong electrostatic adsorption effect, adsorbed viruses and droplets are in full-spreading contact, and the inactivation rate of antibacterial active matter on the viruses is greatly increased.

Description

technical field [0001] The invention relates to the technical field of antibacterial masks, in particular to a super-infiltrating antiviral protective mask and a preparation method thereof. Background technique [0002] The use of disposable medical masks, medical surgical masks and other protective masks is an effective means to prevent the spread of infectious respiratory diseases from person to person. However, currently commercially available medical masks have many defects due to their design and manufacturing process: on the one hand, although the non-woven layer of medical masks has a certain degree of water resistance, it cannot isolate large areas of water droplets, and the virus can fly. Foam, virus aerosol, etc. can adhere to the surface of the non-woven fabric; on the other hand, the middle layer of the medical mask is an ultra-thin polypropylene melt-blown material, which is usually electret (positively charged) treatment. Although it can filter most microorgani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D13/11A41D27/00A41D31/02A41D31/30A41D31/04A41H43/02A41H43/04B32B9/02B32B9/04B32B5/02B32B27/12B32B27/02B32B27/32B32B27/06B32B5/26D06N3/00D06N3/04D06N3/14
CPCA41D13/11A41D27/00A41D31/02A41D31/305A41D31/04A41H43/0257A41H43/04B32B5/022B32B5/26B32B33/00D06N3/047D06N3/14D06N3/0088A41D2500/54B32B2307/7145B32B2262/062B32B2262/0253B32B2255/02B32B2255/26Y02A50/30
Inventor 周建辉廖景文刘文锋银昌铃
Owner 株洲绿智新材料科技有限公司
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