Separation and purification are widely used in all walks of life. Since the sample matrix and state are different, there are also some tips for selecting filter materials. Either the most expensive filter membrane is the best, and only the one suitable for the application can be used. It is the best choice. Here, the editor recommends Teflon liquid filtration membrane to everyone.
Polytetrafluoroethylene is a neutral polymer compound with a unique molecular structure that is completely symmetrical.
The special structure makes it have good thermal stability, chemical stability, insulation, lubricity, water resistance, etc.
High temperature resistance, wide operating temperature range, can be used continuously for a long time at 260℃ (high temperature, instantaneous temperature can reach 280℃); strong chemical stability, corrosion resistance; good self-lubricating, extremely low friction coefficient, very low filter wear Small; the surface tension of the PTFE membrane is very low and has good non-stickiness and water repellency.
The porosity of Teflon liquid filtration membrane can reach 80%~90%, and it has been processed by high-temperature heat setting. The micropore structure is stable and can effectively intercept dust particles. Moreover, its pore size is small and uniform, and its surface filtration mechanism makes it easy to Dust removal, strong hydrophobicity, low surface energy, can ensure complete interception of impurities such as bacteria, while having a large flux.
When used for gas filtration, it can intercept 100% of various phages, bacteria and particles above 0.02um.
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