Multifunctional antibacterial and antiviral composite material and application thereof

A composite material and anti-virus technology, applied in applications, disinfectants, bactericides, etc., can solve the problems of limited antibacterial and anti-virus capabilities, load fastness needs to be improved, and increase the wind resistance of filter materials, so as to improve the charge anti-virus and Filtration performance, improvement of antibacterial and anti-virus and filtration performance, and effect of enhancing charge storage performance

Active Publication Date: 2022-02-01
广东极客亮技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the antibacterial and antiviral ability of graphene alone is limited, and due to the limitation of graphene structure, the loading fastness of graphene on the surface of fiber-based filter materials needs to be improved.
Furthermore, antibacterial and antiviral protective filter materials usually also need to have the function of dust filtration. At present, multi-layer non-woven materials with different functions are combined, such as antibacterial and anti-viral layers and electret non-woven layers. , but the increase in the number of composite layers will increase the wind resistance of the filter material, which is greatly unfavorable for mask filter materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The preparation method of multifunctional antibacterial and antiviral composite material comprises the following steps:

[0038] SA1. uniformly dispersing silver nitrate into a mixed solution of glacial acetic acid and isopropanol, and then adding tetrabutyl titanate to obtain a reaction solution;

[0039]SA2. Immersing the rod-shaped cellulose nanocrystals in the reaction solution obtained in step SA1, and reacting at 150-200° C. for 5-12 hours, to obtain rod-shaped cellulose nanocrystals with flaky titanium dioxide growing on the surface;

[0040] SA3. Disperse the graphene nanosheets in ethanol, then add the rod-shaped cellulose nanocrystals grown on the surface of the flaky titanium dioxide obtained in step SA2, ultrasonically disperse, and deposit the graphene nanosheets on the surface of the flaky titanium dioxide to obtain multifunctional antibacterial and antiviral composite material.

[0041] There is also silicon dioxide growing between the rod-shaped cellulo...

Embodiment 1

[0049] A multifunctional antibacterial and antiviral composite material, the preparation method comprising the steps of:

[0050] SA1. Uniformly disperse 0.1g of silver nitrate into 10mL of glacial acetic acid and 30mL of isopropanol, then add 1mL of tetrabutyl titanate to obtain a reaction solution;

[0051] SA2. Immerse the rod-shaped cellulose nanocrystals with a diameter of 50 nm and an aspect ratio of 3:1 in the reaction solution obtained in step SA1, and react at 160° C. for 6 hours to obtain rod-shaped cellulose nanocrystals with flaky titanium dioxide growing on the surface;

[0052] SA3. disperse the graphene nanosheets in ethanol, then add the rod-shaped cellulose nanocrystals of the surface growth sheet titanium dioxide obtained in step SA2, ultrasonically disperse, and deposit the graphene nanosheets on the surface of the sheet titanium dioxide to obtain multifunctional antibacterial Antiviral composite.

Embodiment 2

[0054] A multifunctional antibacterial and antiviral composite material. Compared with Example 1, the difference is that in step SA2, it also includes: after the obtained rod-shaped cellulose nanocrystals of flaky titanium dioxide on the surface are chemically polished, then The processing of step SA3 is performed. Others are substantially the same as in Embodiment 1, and will not be repeated here.

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PUM

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Abstract

The invention provides a multifunctional antibacterial and antiviral composite material and application thereof. The multifunctional antibacterial and antiviral composite material sequentially comprises rod-like cellulose nanocrystals, titanium dioxide growing on the surfaces of the rod-like cellulose nanocrystals and graphene nanosheets loaded on the surfaces of the titanium dioxide from inside to outside. The rod-like cellulose nanocrystal is used as a matrix, and the obtained rod-like semiconductor antibacterial and antiviral composite material has good dispersity and can be uniformly and firmly loaded on the surface of a fabric especially when being used for fabric modification. A layer structure formed by titanium dioxide and graphene nanosheets has good antibacterial, antiviral and photocatalytic formaldehyde removal effects; in addition, the material can be endowed with a friction power generation function, when the material is used for air filtration, under blowing of airflow and dust, friction is continuously performed to store charges, and the anti-virus and filtering performance of the charges is improved. Preferably, silicon dioxide also grows between the rod-like cellulose nanocrystals and the titanium dioxide, so that the filtering performance is further improved.

Description

technical field [0001] The invention relates to the technical field of antibacterial and antiviral protective materials, in particular to a multifunctional antibacterial and antiviral composite material and its application. Background technique [0002] In recent years, large-scale respiratory infections have continued to break out around the world. In the face of highly infectious viruses and bacteria, medical staff and ordinary residents bear a huge risk of infection. At present, most of the health protection products on the market, such as masks, goggles, protective clothing, etc., rely on the isolation of pathogens for protection, and do not have the function of killing viruses and bacteria. The protection time and protection ability of such protective equipment are relatively limited, and the consumption during emergency use is huge, and it will cause secondary pollution after being discarded. Therefore, protective materials with broad-spectrum antibacterial and antivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N59/00A01N25/10A01P1/00A01P3/00B01J31/06B01D39/02B01D53/86B01D53/72D06M11/46D06M11/74D06M15/05
CPCA01N59/16A01N59/00A01N25/10B01J35/004B01J31/069B01D39/02B01D53/8668D06M11/46D06M11/74D06M15/05D06M16/00B01D2257/708B01D2255/20707B01D2255/30B01D2239/10
Inventor 曾伟荣曾伟城
Owner 广东极客亮技术有限公司
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