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Preparation method of filtering material for mask

A filter material and mask technology, applied in the field of medical materials, can solve problems such as inability to meet demand and general filtration performance, and achieve excellent filtration effect, high filtration efficiency, and reduced expiratory resistance and inhalation resistance.

Inactive Publication Date: 2020-12-22
安徽灵春医用耗材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the filtration performance of the mask has an extremely important relationship with the wearer of the mask. However, the filtration performance of the filter material of the mask in the current technology is general and cannot meet the needs of some occasions in the market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] A method for preparing a filter material for a mask, comprising the following steps:

[0039] (1) Preparation of lignin microfibers:

[0040] Mix wood powder and sodium hydroxide solution together, then heat to 90-95°C, heat and stir for 3 hours, filter, remove impurities, and obtain filter pulp;

[0041] Add the filter slurry obtained above into the autoclave, first adjust the pH of the system to 7.0, then add absolute ethanol, stir evenly, then seal the autoclave, adjust the temperature to 145-148°C, and adjust the pressure to 12- 16MPa, stirred and reacted for 2 hours, then released the pressure, cooled naturally to room temperature, and obtained the pretreated slurry;

[0042] Concentrating the pretreated slurry obtained above to one-half of the original volume to obtain a concentrate;

[0043] adding the concentrate to a ball mill for ball milling to obtain a ball mill liquid;

[0044] Vacuum freeze-drying the ball milling solution obtained above to obtain ligni...

Embodiment 1

[0070]A method for preparing a filter material for a mask, comprising the following steps:

[0071] (1) Preparation of lignin microfibers:

[0072] Mix wood flour and sodium hydroxide solution together, then heat to 90°C, heat and stir for 3 hours, filter, remove impurities, and obtain filter slurry; add the filter slurry obtained above into a high-pressure reactor, and adjust the pH of the system to 7.0, then add absolute ethanol, after stirring evenly, then seal the autoclave, adjust the temperature to 145°C, adjust the pressure to 12MPa, stir and react for 2 hours, then release the pressure, naturally cool to room temperature, and obtain the pretreated slurry; Concentrate the pretreatment slurry obtained above to one-half of the original volume to obtain a concentrate; add the concentrate to a ball mill for ball milling to obtain a ball mill liquid; vacuum freeze-dry the ball mill liquid obtained above to obtain wood Plain microfiber; The wood powder is a mixture of paulow...

Embodiment 2

[0079] A method for preparing a filter material for a mask, comprising the following steps:

[0080] (1) Preparation of lignin microfibers:

[0081] Mix wood flour and sodium hydroxide solution together, then heat to 95°C, heat and stir for 3 hours, filter, remove impurities, and obtain filter slurry; add the filter slurry obtained above into a high-pressure reactor, and adjust the pH of the system to 7.0, then add absolute ethanol, after stirring evenly, then seal the autoclave, adjust the temperature to 148°C, adjust the pressure to 16MPa, stir and react for 2 hours, then release the pressure, naturally cool to room temperature, and obtain the pretreatment slurry; Concentrate the pretreatment slurry obtained above to one-half of the original volume to obtain a concentrate; add the concentrate to a ball mill for ball milling to obtain a ball mill liquid; vacuum freeze-dry the ball mill liquid obtained above to obtain wood Plain microfiber; The wood powder is a mixture of pau...

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Abstract

The invention discloses a preparation method of a filtering material for a mask, and relates to the technical field of medical materials. The preparation method comprises the following steps: (1) preparing lignin microfibers; (2) preparing activated carbon fibers; (3) mixing; the filtering material for the mask prepared by the method has an excellent filtering effect, and the filtering material prepared by mixing the prepared activated carbon fibers and the lignin microfibers according to a certain mass ratio has relatively small filtering resistance and higher filtering efficiency.

Description

technical field [0001] The invention belongs to the technical field of medical materials, in particular to a method for preparing a filter material for a mask. Background technique [0002] In recent years, as the air pollution has become more and more serious, many places in our country have experienced large-scale continuous haze and dust weather, especially in the Beijing-Tianjin-Hebei region. The deterioration of the weather, the phenomenon of smog weather is increasing, and the harm is more and more serious. [0003] Therefore, when going out in haze weather, you need to wear a suitable mask to prevent respiratory diseases. There are still many bacteria, viruses, mycoplasma, chlamydia and other microorganisms in the air. They generally attach to suspended particles in the air. The air flows and flows, and when it is inhaled by the human body, it will cause infectious diseases such as asthma and pneumonia in the human body, and even death from infection in severe cases....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/04A41D13/11
CPCA41D13/11B01D39/04B01D2239/0407B01D2239/10
Inventor 汤现春刘会珍
Owner 安徽灵春医用耗材有限公司