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Hydrogel patch material fixed on edge of mask or medical goggles, preparation method and application thereof

A hydrogel patch and hydrogel technology, applied in the field of network hydrogel, can solve the problems of not being able to fully seal, the protective gear environment is wet, and the skin is damaged, and achieve good biocompatibility and biological Degradability, the effect of resolving streaks and local sealing, and improving wearing comfort

Active Publication Date: 2020-11-17
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the height of the nose of the human body, most masks currently use hard materials such as steel wire clips and aluminum sheets to fit the face and nose, so they cannot fully seal the effect and easily lead to the entry of bacteria
At the same time, these hard materials will cause friction between the nose and the face, which will aggravate the skin damage and indirectly increase the risk of infection; The eyepiece does not have a good moisture absorption function, and the moisture breathed and sweat secreted by the human body cannot be discharged well, so the internal environment of the protective gear is relatively humid, which affects the wearing comfort

Method used

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  • Hydrogel patch material fixed on edge of mask or medical goggles, preparation method and application thereof
  • Hydrogel patch material fixed on edge of mask or medical goggles, preparation method and application thereof
  • Hydrogel patch material fixed on edge of mask or medical goggles, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] To prepare a hydrogel with hygroscopicity, compression resistance and antibacterial properties, the specific steps are:

[0052] 1) Dissolve carboxymethyl chitosan in deionized water to form a 1.00 g / ml carboxymethyl chitosan solution.

[0053] 2) The nano-silver is added into deionized water to dissolve to form a 0.04g / ml nano-silver solution.

[0054] 3) Dissolving acrylic acid in deionized water to form a 2.00 g / ml acrylic acid solution;

[0055] 4) 20.00ml of acrylic acid solution in step (3) is mixed with 10.00ml of carboxymethyl chitosan solution obtained in step (1) and 0.625ml of nano silver solution obtained in step (2), and 0.25g of ferric chloride is added in the resulting mixed solution Mix with initiator ammonium persulfate 0.0025g, stir evenly, react at 40°C for 10h, the solution becomes elastic hydrogel, and forms PAA / CMCS double network hydrogel.

[0056] 5) The oxidized dextran was dissolved in deionized water to form a 10 g / ml oxidized dextran soluti...

Embodiment 2

[0062] A preparation method for preparing a hydrogel with moisture absorption, compression resistance and antibacterial properties, the specific steps are:

[0063] 1) Add carboxymethyl chitosan to deionized water to dissolve to form a 1.50 g / ml carboxymethyl chitosan solution;

[0064] 2) adding nano-silver to deionized water to dissolve to form a 0.05g / ml nano-silver solution;

[0065] 3) Dissolving acrylic acid in deionized water to form a 4.00 g / ml acrylic acid solution;

[0066] 4) 15.0ml of step (3) acrylic acid solution is mixed with 10.0ml of step 1) gained carboxymethyl chitosan solution and 0.9ml of step 2) gained nano-silver solution, and 0.375g of ferric chloride is added in the resulting mixed solution to trigger Ammonium persulfate 0.00375g, stir evenly, react at 40°C for 10h, the solution becomes elastic hydrogel, forming PAA / CMCS double network hydrogel;

[0067] 5) The oxidized dextran was dissolved in deionized water to form a 15.0 g / ml oxidized dextran sol...

Embodiment 3

[0073] A preparation method for preparing a hydrogel with moisture absorption, compression resistance and antibacterial properties, the specific steps are:

[0074] 1) Carboxymethyl chitosan was added into deionized water to dissolve to form a 2.50 g / ml carboxymethyl chitosan solution;

[0075] 2) adding nano-silver to deionized water to dissolve to form a 0.10g / ml nano-silver solution;

[0076] 3) Dissolving acrylic acid in deionized water to form a 4.60 g / ml acrylic acid solution;

[0077] 4) 22.0ml of step (3) acrylic acid solution is mixed with 10.0ml of step 1) gained carboxymethyl chitosan solution and 0.625ml of step 2) gained nano-silver solution, and 0.631g of ferric chloride is added in the resulting mixed solution to trigger Ammonium persulfate 0.00631g, stir evenly, react at 40°C for 10h, the solution becomes elastic hydrogel, forming PAA / CMCS double network hydrogel;

[0078] 5) The oxidized dextran is dissolved in deionized water to form a 18g / ml oxidized dextr...

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Abstract

The embodiment of the invention relates to a hydrogel patch material fixed on the edge of a mask or medical goggles, a preparation method and application thereof, wherein the hydrogel is a PAA / CMCS dual-network hydrogel and is prepared by taking Fe<3+> as a cross-linking agent, taking ammonium persulfate or potassium persulfate as an initiator and taking acrylic acid and carboxymethyl chitosan asbase materials. The material can be used for preventing pressure damage of masks or medical goggles.

Description

technical field [0001] The invention relates to a network hydrogel, in particular to a hydrogel patch material fixed on the edge of a mask or medical goggles and its preparation method and application. Background technique [0002] A mask is a kind of sanitary product. It is worn on the mouth and nose to filter the air entering the mouth and nose to achieve the effect of blocking harmful gases, odors, and droplets from entering and exiting the wearer's mouth and nose. It has a certain effect on the air entering the lungs. filtering effect. When respiratory infectious diseases are prevalent, wearing a mask has a very good effect when working in a polluted environment such as dust. [0003] Masks and goggles generally rely on the pulling effect of ear straps or elastic bands to squeeze the face to achieve a sealing effect. [0004] Masks and goggles generally rely on the pulling effect of ear straps or elastic bands to squeeze the face to achieve a sealing effect. In additio...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08L33/02C08L5/08C08L5/02C08K3/08A61F9/02A41D13/11
CPCC08J3/075A61F9/026A41D13/1176C08J2333/02C08J2405/08C08J2405/02C08K2003/0806C08K2201/011
Inventor 赵天艺刘明杰赵聪李小双
Owner BEIHANG UNIV
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