The PM2.5 masks commonly used in the market can only filter particles with a diameter of 2.5μm in the air, while N95 masks can block 95% of particles with a diameter of 2.5μm in the air. viruses such as influenza, Ebola and mers can be suspended in the air with a diameter generally between 60-140nm and a minimum diameter of up to 70-90nm. by comparison it can be seen that PM2.5 mask cannot resist the attack of the virus. If a new type of protective equipment can resist the invasion of nano virus, the infection rate of human will be greatly reduced.
Magnesium oxide nano as an additive has a wide range of applications in many fields, its antibacterial, anti-virus, flame retardant properties can bring great improvement to human life. Using the antibacterial and flame-retardant properties of magnesium oxide nanoparticles, magnesium oxide nanoparticles are added to the surface of fibers using ultrasonic technology, and a protective layer of magnesium oxide nanoparticles is formed on the surface to make fabric, so that the fabric can filter 30nm particles, which will greatly reduce the invasion of virus.
Nano magnesium oxide has a high specific surface area, there are more lattice defects and positively charged, adsorption of halogen gas can form a strong role with the negatively charged E. coli and bacillus, etc., so that the bacteria, bacillus and viruses show a high kill, compared with silver oxide and other metal elements containing silver, copper and other solid fungicides, magnesium oxide nano has the advantages of abundant raw materials, simple sterilization conditions, itself odorless It has the advantages of abundant raw materials, simple sterilization conditions, odorless and tasteless.
Messi Biology made a systematic study on the bactericidal performance of magnesium oxide nano, the results show that: 4-10nm magnesium oxide has an exceptionally outstanding killing effect on a variety of viruses, bacteria and fungi (within 20min, the killing effect of bacteria is 100%), far better than the usual silver fungicide (within 60min, the killing effect of bacteria is 100%); and magnesium oxide nano has a chlorine Huge adsorption capacity, can adsorb 20% of its own weight of chlorine, further strengthen the sterilization effect.