The materials of microfiltration membranes are divided into two categories: organic and inorganic. Organic polymers include cellulose acetate, polypropylene, polycarbonate, polyethersulfone, polyamide, etc. Inorganic membrane materials include ceramics and metals. In view of the separation characteristics of microporous filter membranes, the application scope of microporous filter membranes is mainly to intercept particles, small bacteria and other pollutants from the gas phase and liquid phase to achieve the purpose of purification, separation and concentration. ptfe microporous filter membrane is one of them.
For microfiltration, the retention characteristics of the membrane are characterized by the pore size of the membrane, which usually ranges from 0.1 to 1 micron. Therefore, microfiltration membrane can separate large-diameter bacteria, suspended solids, etc. It can be used for clarification, security filtration and air filtration of general liquid materials. Currently, there are the following types of filter membranes on the market suitable for filtration of organic solvents:
Polytetrafluoroethylene membrane (PTFE) filter element is divided into hydrophilic PTFE membrane and hydrophobic PTFE Membrane; has high precision and wide chemical compatibility; suitable for gas filtration, filtration of various acids, alkalis, and organic solvents.
Polyvinylidene fluoride membrane (PVDF) filter element is divided into hydrophilic PVDF membrane and hydrophobic PVDF membrane; it has high precision and wide chemical compatibility; it is suitable for Gas filtration, filtration of various acids, alkalis, and organic solvents. Nylon membrane (N6N66) filter element is divided into N6 and N66 membranes; it has high precision; it is suitable for filtration of organic solvents and liquid filtration.
The currently independently developed ptfe microporous filter membrane series is widely used in organic solvent filtration and has both hydrophobic and hydrophilic properties. Two categories.
PTFE microporous filter membrane Used for gas filtration, it can achieve sterility, has large flux, is temperature-resistant, and is resistant to strong acids and alkalis. , wide chemical applicability and other characteristics, suitable for fermentation tanks, carbon dioxide, nitrogen and compressed air. When used for liquid filtration, it can intercept all kinds of phages, small bacteria and particles above 0.2μm, meeting the requirements of HIMA small bacteria interception experiments. Interested parties are welcome to enter the store for consultation.
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