At present, the anti-fog masks on the market, whether Honeywell, Xiaomi, 3M, Green Shield, etc. Basically, it is used as a material for filtering PM2.5, but the non-woven fibers are very thick, and the coarse particles are used to intercept PM 2.5, a solid particle suspension with a diameter of 2.5 wechat. The possibility of success is not very high, so manufacturers increase the thickness of non-woven fabrics to improve the interception rate. Although the possibility of intercepting PM2.5 in this way increases, the mask becomes thicker and heavier, resulting in increased respiratory resistance. The effect of stopping PM2.5 is enhanced, but the respiratory resistance is also enhanced, and the overall comfort is not enough.
The treasure purification cloud cover adopts PTFE nano-film with a pore size of only 100 nm (0. 1 micron) to intercept PM2.5 with a diameter of 2.5 microns. The thin layer can achieve almost 99% filtration effect. Moreover, the mask filters PM2.5 through direct interception rather than electrostatic adsorption, so there is no need to worry about the problem that the traditional non-woven mask can't filter PM2.5 after being dipped in water.
No.65438 +0 lightweight sanitary mask, PM2.5 mask imported from Japan, disposable activated carbon mask is the best among the eight masks, and the filtering effect is not bad. In fact, the protective effect of the mask is not good, not only because the mask is not thick enough, but also because of the size of the effective substances used to filter and adsorb fine particles in the mask.