Surgical masks filter principle is what

by:HongYu Apparel     2020-05-08
Surgical masks of filtration principle, mainly divides into five aspects, although has certain professional. However, only understanding its filtering principle, can be better to use surgical masks. ( 1) Brownian motion: as the particle size is too small and vulnerable to other continuous collision of gas molecules, causing their trajectory is random Brownian motion, adsorbed on the surface of fiber, and the smaller the particle, the stronger the effect. ( 2) Intercept particle size is too big, cannot penetrate fiber gap, then capture directly by the fiber surface, the bigger the particle size of particles of the better the results. ( 3) Inertial impact inertia is the continuous nature of the particles themselves movement, if gas and suspended particles at the same rate of filter cloth and filter material, the gas will change the direction of flow with holes in the filter material, the larger particles will be because of inertia causes the flow direction, still maintain the original and the impact on the filter material, to achieve the function of the filter. The quality and the faster the speed of the particles, the greater the filtering effect is better. ( 4) Electrostatic attraction: because fiber charged, induce adsorbed on the surface of fiber, very fine grain size is smaller, the quality of the lighter particles are attracted more easily. ( 5) Settlement: settlement caused by the gravity of the particles themselves directly, and is captured by the filter material; The greater the quality, the more opportunities.
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