Melt-blown fabric for adsorbing and inactivating viruses and application

A technology of melt-blown cloth and virus, which is applied in the field of masks

Active Publication Date: 2021-10-01
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, the melt-blown non-woven materials and related patents that have a good inactivation effect on highly infectious disease viruses such as the new coronavirus (COVID-19) have not yet been reported or published.

Method used

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  • Melt-blown fabric for adsorbing and inactivating viruses and application
  • Melt-blown fabric for adsorbing and inactivating viruses and application
  • Melt-blown fabric for adsorbing and inactivating viruses and application

Examples

Experimental program
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Effect test

preparation example Construction

[0036] The preparation of the melt-blown cloth for absorbing and inactivating virus of the present invention comprises the following steps:

[0037] 1. Preparation of multi-level material particles

[0038] (1) Preparation of nucleus: NH 4 ZSM-5 molecular sieve (SiO 2 / Al 2 o 3 =25, the specific surface area is 550m 2 / g, particle size 2.3μm, average pore size 0.54nm) mixed with 0.35mol / L NaOH solution at a volume ratio of 1:30, heated and stirred in a water bath at 75°C for 2 hours, filtered the mixed solution, and washed the solid until neutral , after drying at 120°C for 6 hours and calcining at 500°C for 2 hours, a hierarchical porous molecular sieve, which is the core of the catalytic material, was obtained. Measure its average mesopore diameter 24.3nm with the automatic physical adsorption instrument (US Micromeritics company, ASAP 2460) that can measure the distribution and pore volume of mesopore and micropore, the pore distribution is 3.2-48.7nm, and the average ...

Embodiment 1-4

[0054] Table 1

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[0056]

[0057] Table 2

Embodiment 5-20

[0059]

[0060]

[0061]

[0062] 2. Adsorption and inactivation test for viruses

[0063] 1. Virus preparation:

[0064] Prepare TCID separately 50 COVID-19 virus liquid (4.37×10 8 copies / ml) and TCID 50 The tools lentivirus (pLenti) virus solution (7×10 9 copies / ml) is used for the adsorption and inactivation test of novel coronavirus and lentivirus by powder materials and melt-blown cloth;

[0065] 2. Prepare 9 kinds of melt-blown cloth, numbered WF-1~WF-9, weigh 50 mg of each material, and 50 mg of the melt-blown cloth substrate of non-embedded core-shell structure hierarchical porous catalytic material, after curling and folding, respectively Put into a sterile 1.5ml EP tube, add 1.0mL TCID dropwise 50 The lentivirus (pLenti) virus solution was reacted at room temperature for 30 minutes, and the mixture of the test substance and the virus solution was shaken once every 5 minutes during the period to ensure the full effect of the material and the virus. At t...

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Abstract

The invention provides a melt-blown fabric for adsorbing and inactivating viruses. The melt-blown fabric is composed of a melt-blown fabric matrix and porous particles which are embedded on melt-blown fabric fibers and are used for adsorbing and inactivating the viruses, wherein each porous particle is composed of a shell and a core; each shell is composed of an oxygen storage material SiO2-CeO2; and each core is a hierarchical pore molecular sieve. The melt-blown fabric can be used for adsorbing and inactivating the viruses, can be used as a filtering assembly to be applied to wearing protection equipment such as masks and protective clothing and HEPA efficient filters, and can be further applied to equipment such as air purifiers, air conditioners and fresh air systems.

Description

technical field [0001] The invention relates to the field of masks, medical protective clothing, indoor air purification and protection technologies for epidemic viral diseases, in particular to a melt-blown cloth for absorbing and inactivating viruses and its application. Background technique [0002] The spread of novel coronavirus (COVID-19) seriously threatens the safety of people's lives. The research and development of drugs and vaccines is currently in progress. However, according to the laws of drug and vaccine development, it may be difficult for related products to quickly enter the clinical and practical stage in a short period of time. In order to prevent the spread of the virus, there is an urgent need for long-term and efficient virus scavengers and inactivators for the protection of hospitals, large public places, families and individuals. [0003] According to reports, the transmission route of the new coronavirus includes droplets, aerosols, and dust in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M11/45D06M11/83B01D46/00A41D31/30D06M101/20
CPCD06M11/79D06M11/45D06M11/83D06M16/00B01D46/0028B01D46/0036A41D31/30D06M2101/20
Inventor 马磊吴春田侯宝林朴海龙李林王稳冯璐张万生黄延强王晓东张涛
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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