Many people don’t know what the principle of air filtration is. Why are dust substances in the air filtered and purified by filter cotton, filters and other equipment? , let me explain to you the basic knowledge of air filtration and the development of polytetrafluoroethylene dust removal membrane, a new filter material.
Air filtration is when the dust material in the air is subjected to some kind of force Function, a purification process that uses quite porous bodies to remove dispersed dust particles from gases. The certain forces mentioned above refer to three types: inertial force, van der Waals force, and electrostatic force. Large particles move inertially in the airflow. When the airflow encounters an obstacle, the particles deviate from the direction of the airflow and hit the obstacle due to inertia. Due to the larger diameter and strong inertial force, the possibility of hitting the obstacle is greater, so the dust cannot pass through. filter material, so the filtration effect is good. Small particles move irregularly. Although they have a certain direction, they mainly move by diffusion. Since the fibers of the filter material are fine, the van der Waals force between the two micromolecules makes them bond together, so the dust cannot pass through the filter material. At this time, the filtration effect is good. . When we bring and maintain static electricity on the filter material, the static electricity can retain the dust and prevent the dust from passing through the filter material. At this time, the filtration effect is good.
During air filtration, due to inertial collision, interception, diffusion and static electricity, dust particles suspended in the gas settle into the porous material, and its structure It is fibrous, porous, or a combination of these structures, collectively referred to as filter material.
The polytetrafluoroethylene dust removal membrane currently independently developed and produced is a new type of filter material that can be used as the core of the air filter The filter material has a microporous structure of staggered fibers, with high porosity and uniform pore size distribution. Therefore, the polytetrafluoroethylene dust removal membrane can obtain high air permeability at low resistance and can meet the filtration needs of different filtration levels. , compared with other materials, PTFE dust removal membrane has a higher PF value and good filtration performance. It has strong hydrophobicity, low surface energy, good non-adhesive properties, and can easily remove dust accumulated on the surface. Interested parties can enter the store for consultation and purchase!