With the rapid expansion of cities, fresh water resources are severely lacking, industrial wastewater treatment rates are low, and the deterioration of the urban ecological environment has become a major problem restricting urban development. However, traditional separation technology has great limitations and poor feasibility. A new filter material is needed to solve this problem. Polytetrafluoroethylene hydrophilic filter membrane is a good choice.
The extremely low surface tension of PTFE membrane can reduce membrane fouling and make membrane cleaning operations easier. However, the strong hydrophobicity of PTFE membrane limits its application in the treatment of aqueous solution systems. The expanded PTFE microporous membrane has hydrophobicity, low surface energy, and poor surface wettability. When using it in a membrane bioreactor, it needs to be wettable with water. The polytetrafluoroethylene bubble point membrane is hydrophilically modified through ionic treatment, functional monomer polymerization, chemical treatment, etc. to improve its wettability and adhesion. The modified polytetrafluoroethylene hydrophilic filter membrane can make water Through this, it has the characteristics of strong hydrophilicity, high flow rate, high flux, high dirt holding capacity and strong chemical stability. When filtering water, suspended particles in the water are separated, which expands its application in industrial fields such as water purification and sanitation.
Polytetrafluoroethylene hydrophilic filter membrane is prepared using biaxial stretching technology, which can ensure that all impurities such as bacteria are trapped, and at the same time Has greater throughput. The material is resistant to temperature, strong acid and alkali, and has wide chemical applicability. When used for gas filtration, it can intercept all kinds of phages, bacteria and particles above 0.02um. The porosity can reach more than 88%, with 1.4 billion micropores per square centimeter and a pore diameter ranging from 0.1μm to 0.5μm. Generally, this film is coated on various fabrics and substrates using special processes to become a new filter material.
Polytetrafluoroethylene hydrophilic filter membrane can be applied to factory circulating water treatment, sewage treatment and other solid-liquid separation and filtration technologies field of. Interested parties are welcome to enter the store for consultation and purchase.
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