Method for preparing antibacterial air-filtering membrane

Abstract

The invention relates to a method for preparing an antibacterial air-filtering membrane. The method comprises the following steps of: co-mixing and dissolving an antibacterial agent, a polymer, an addition agent and a solvent and obtaining a stable co-mixed solution; or obtaining a uniform fusant through fusing and co-mixing the antibacterial agent and the polymer; and then weaving nanofibers of the co-mixed solution or the fusant on the surface of a non-woven fabric through electrostatic spinning and obtaining the antibacterial air-filtering membrane. The preparation method provided by the invention has the advantages of simplicity, low cost, low requirement for equipment and suitability for scale production; and the product prepared by the method has good long-term antibacterial capability and can be applied to closed spaces with concentrated personnel, such as hospitals, stations and the like and can also be applied to places with lower requirements, such as ordinary families and the like.

Description

technical field [0001] The invention belongs to the field of preparation of filter materials, in particular to a preparation method of an antibacterial air filter membrane. Background technique [0002] The world's filter material industry is developing very fast. Because of its excellent filtering performance, non-woven fabrics are more and more widely used in metallurgy, machinery, electronics, pharmaceuticals, medicine, environmental protection, mining, building materials and other fields. According to reports, in 2007, the world filtration and separation products market reached 37.3 billion US dollars, of which air filtration was 5.5 billion, and air purification devices accounted for more than half of it, and it is still growing rapidly. This process has been facilitated by increasing demands on water and air quality. [0003] The most common air filtration membranes on the market today are mainly manufactured by traditional nonwoven processes such as meltblown or spun...

AI Technical Summary

Problems solved by technology

Traditional non-woven fabrics cannot completely trap such bacteria, and the trapped germs are usually unable to kill them

In addition, the filter usually has a long service life, and bacteria may grow and multiply on the upper surface of the filter, causing secondary pollution

Viruses usually have a diameter of about 200 nanometers, which is the particle size with the lowest interception efficiency of traditional non-woven fabrics and is also around 100-300 nanometers, so virus filtration is usually very difficult