Generally speaking, the conventional production method of ptfe microporous filtration membrane is: dispersing polytetrafluoroethylene The resin is mixed with liquid additives, the mixture is made into a sheet by calendering, and then the sheet is biaxially stretched using a machine.
The cross-sectional micropore size of the membrane is larger than the micropore size on its surface, and the vertical and horizontal micropore sizes are also different, with the longitudinal micropores being larger than the transverse ones. The cross-section of the membrane is a network structure. The three-dimensional structure of the pores has very complex changes such as network connectivity, pore nesting, and channel bending. There may be multiple micropores forming a channel, or one micropore may be connected to multiple Channels are connected.
PTFE microporous filtration membrane is obtained by biaxial stretching of a polymer compound polymerized with tetrafluoroethylene. It is one of the materials with the best corrosion resistance in the world today, except for a few chemicals such as chlorine trifluoride and liquid chlorine. It is resistant to all other chemical reactions, insoluble in strong acids, strong alkali, and organic solutions, and does not change in boiling nitrohydrochloric acid. The temperature resistance range is -195℃～250℃, and the long-term use temperature is -100℃～250℃.
PTFE microporous filtration membrane is prepared using unique biaxial stretching technology, which can ensure complete retention of bacteria and other impurities while having a large flux. The material is resistant to high temperatures, strong acids and alkali, and has wide chemical applicability. When used for gas filtration, it can achieve 100% retention of various phages, bacteria and particles above 0.02um. PTFE microporous membrane has high filtration efficiency and can meet the filtration efficiency level requirements of sub-high efficiency, high efficiency and ultra high efficiency air filters. Interested parties can enter the store to inquire and purchase! </p
