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Recyclable antiviral mask and preparation method thereof

An anti-virus and mask technology, applied in applications, clothing, protective clothing, etc., can solve the problems of low reuse rate of masks, secondary infection of viruses, inability to kill bacteria, etc. Infection, the effect of enhancing photocatalytic performance

Active Publication Date: 2021-11-23
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN202010728686 discloses an anti-virus mask made of nanofiber material. The anti-virus mask structure includes a first cotton fiber cloth layer, a nanofiber layer and a second cotton fiber cloth layer, and has the ability to filter PM2.5, dust, viruses, etc. The characteristics of inhalable particulate matter, but this type of mask can only filter the germs and cannot kill the germs, and the reusability of the mask is low. When the mask is discarded, there is still a risk of secondary infection of the virus

Method used

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  • Recyclable antiviral mask and preparation method thereof
  • Recyclable antiviral mask and preparation method thereof
  • Recyclable antiviral mask and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0037] The present embodiment prepares the recyclable antiviral mask preparation method according to the following steps:

[0038] 1. The polypropylene melt-blown cloth layer is subjected to electret treatment through a corona charging device, the electret voltage is 10kV, and the electret time is 5s.

[0039] 2. Add the dispersion of anatase-type nano-titanium dioxide with a particle size of 25nm dropwise to a point where the viscosity-average molecular weight is 26,200, the deacetylation degree is 94.69%, the C6 carboxyl degree is 50.37%, and the C2 and C3 aldehyde group content is In 13.25% oxidized chitosan solution (mass ratio of nano-titanium dioxide to oxidized chitosan is 1:4), hydrothermal method (hydrothermal temperature 78 ℃, time 2h) obtained an average particle size of 186nm, Zeta potential of 35.29 mV core-shell titanium dioxide@oxidized chitosan nanoparticles.

[0040] Add 100 mL of dopamine solution with a mass concentration of 1 g / L to a three-necked beaker, ...

Embodiment 2

[0045] The present embodiment prepares the recyclable antiviral mask preparation method according to the following steps:

[0046] 1. The polypropylene melt-blown cloth layer is subjected to electret treatment through a corona charging device, the electret voltage is 10kV, and the electret time is 8s.

[0047] 2. Add the dispersion liquid of anatase nano-titanium dioxide with a particle size of 25nm dropwise to a point where the viscosity-average molecular weight is 24,500, the deacetylation degree is 94.69%, the C6 carboxyl degree is 51.90%, and the C2 and C3 aldehyde group content is In 11.32% oxidized chitosan solution (mass ratio of nano-titanium dioxide to oxidized chitosan is 1:4), hydrothermal method (hydrothermal temperature 80 ℃, time 3h) obtained an average particle size of 152nm, Zeta potential of 40.41 mV core-shell titanium dioxide@oxidized chitosan nanoparticles.

[0048] Add 100mL of dopamine solution with a mass concentration of 2g / L to a three-neck beaker, mi...

Embodiment 3

[0053] The present embodiment prepares the recyclable antiviral mask preparation method according to the following steps:

[0054] 1. The polypropylene melt-blown cloth layer is subjected to electret treatment through a corona charging device, the electret voltage is 15kV, and the electret time is 8s.

[0055] 2. Add the dispersion liquid of anatase nano-titanium dioxide with a particle size of 25nm dropwise to a point where the viscosity-average molecular weight is 21,900, the deacetylation degree is 95.31%, the C6 carboxyl degree is 39.74%, and the C2 and C3 aldehyde group content is In 15.19% oxidized chitosan solution (mass ratio of nano titanium dioxide to oxidized chitosan is 1:2), hydrothermal method (hydrothermal temperature 80°C, time 3h) obtained an average particle size of 127nm and a Zeta potential of 37.22 mV core-shell titanium dioxide@oxidized chitosan nanoparticles.

[0056] Add 100 mL of dopamine solution with a mass concentration of 2 g / L to a three-necked b...

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Abstract

The invention discloses a recyclable anti-virus mask and a preparation method thereof, the main body part of the mask sequentially comprises a first anti-seepage non-woven fabric layer, a second anti-virus polypropylene melt-blown fabric layer and a third skin-friendly non-woven fabric layer from outside to inside, and the anti-virus polypropylene melt-blown cloth layer is formed by spraying polydopamine modified core-shell type titanium dioxide @ oxidized chitosan nanoparticles on polypropylene melt-blown cloth. The method is easy and convenient to operate and low in cost, the obtained mask can effectively block secondary virus pollution of the waste mask, the repeated utilization rate is high, and the practical application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of new daily protective products, relates to a mask, in particular to a recyclable antiviral mask and a preparation method thereof. Background technique [0002] As an important line of defense for people to prevent respiratory disease infection, masks can effectively prevent droplets, fine particles and germs in the air from entering the human respiratory tract when worn, and have a certain filtering effect on the air entering the lungs. A very good physical protective barrier. Most of the large-scale outbreaks in recent years are respiratory infectious diseases, such as SARS, Influenza A (H1N1), and the outbreak of novel coronavirus pneumonia in 2020, all of which are due to the rapid mutation and rapid transmission of pathogens, and the general susceptibility of the population to infection. , The difficulty of control and other reasons has become popular all over the country and even the world, resulting...

Claims

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Application Information

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IPC IPC(8): A41D13/11A41D31/02A41D31/30A41D31/10A41D31/04D06M10/06D06M10/10D06M10/02C08G73/06
CPCA41D13/1192A41D31/02A41D31/30A41D31/10A41D31/04D06M10/06D06M10/10D06M10/025C08G73/0672
Inventor 汪泳许云辉丁朝阳陈国力李日新许成刚邓梦晴丁文倩郭仕豪
Owner ANHUI AGRICULTURAL UNIVERSITY