Mask made of nano-filtration material

Abstract

The invention discloses a mask made of a nano-filtration material, and belongs to the technical field of masks. The mask made of a nano-filtration material comprises a non-woven fabric layer, a nano-filtration layer and a protective layer, the nano-filtration layer comprises at least two layers of hierarchical unit films, cavities are formed between the hierarchical unit films to contain nano-antibacterial functional substances and sterilization balls, the hierarchical unit films are polytetrafluoroethylene films, the nano-antibacterial functional substances are nano-oxides or nano-catalytic materials, a breather valve and a guide rail are arranged on the protective layer, and a user can adjust the position of the breather valve according to personal use requirements. Through multi-layer filtration of the non-woven fabric layer, the nano-filtration layer and the protective layer, the filtration effect is improved, the bacterial virus filtration efficiency is greater than 99%, the material can be used for a long time, and the efficient filtration performance is maintained.

Description

technical field [0001] The invention relates to the field of protective equipment, in particular to a mask using nanometer filter materials. Background technique [0002] Today, due to industrial emissions, coal burning, road dust and forest area reduction, the content of fine dust particles in the air is gradually increasing, causing PM2. weather. Studies have shown that long-term exposure to this harsh environment can easily cause respiratory and lung diseases. At the same time, due to the characteristics of some pathogenic bacteria and viruses, they can easily spread into the respiratory tract through the air and cause human illness. Therefore, using a mask becomes a simple and effective way to solve the above problems. [0003] In the prior art, in response to people's different uses and needs, masks can be divided into: (1) ordinary masks: the pores of the fiber structure are relatively large (about 1 μm), and can only filter large particles of dust in the air to a c...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in response to people's different uses and needs, masks can be divided into: (1) ordinary masks: the pores of the fiber structure are relatively large (about 1 μm), and can only filter large particles of dust in the air to a certain extent. It is mainly used to keep out the cold and cannot prevent the invasion of pathogens

(2) Medical masks: can block the spread of droplets, blood, body fluids, secretions, etc., block the pollutants exhaled or sprayed from the mouth and nasal cavity, and have a better filtering effect on particles and bacteria, but as time grows, Its filtration efficiency gradually decreases, and if it comes into contact with moisture or water, its filtration efficiency will drop rapidly, and it cannot be reused

However, this invention needs to mix polyether polyol, water, silicone oil, stannous zincate and amine catalyst evenly at room temperature, add inorganic nanoparticles, and then add toluene diisocyanate after high-speed mechanical stirring to disperse evenly, and then high-speed stirring After dispersing, pour it into a molding mold, and foam it under the condition of 0-40°C to obtain the polyurethane sponge mask material modified by inorganic nanoparticles.

Images