The main classification and application of PTFE membrane
1. PTFE air filter membrane
The unique node of the polytetrafluoroethylene micropodes, smooth surface, smooth surface, chemical resistance, breathable impermeability, large breathability, flame retardant, high temperature resistance, anti -acid alkali, non -toxic, etc. can be used for atmospheric dust removal , Air purification, etc. The filtering efficiency made by the membrane is high, which can reach 99.99%, nearly zero emissions; the operation resistance is low and the filtration speed is fast; the service life is long, which can be reused to reduce the operating cost. It is mainly used in chemical, steel, metallurgy, charcoal black, power generation, cement, waste incineration and other industrial melting furnaces. Polytetrafluoroethylene filter membrane, this membrane pore can be controlled between 0.2 and 15 μm, and the gap rate can reach more than 85%.
2. PTFE clothing film
The pore formation characteristics of polytetrafluoroethylene plastic resin are made of micropores made of two -way stretching method. The surface of the membrane can reach more than one billion micropores per square centimeter, and each micro-hole diameter (0.1 μm-0.5 μm) is hundreds of times smaller than the diameter of the water molecule (20 μm-100 μm), which μm) is tens of thousands of times, so that water vapor can pass, and water droplets cannot pass. Using this microporous structure can achieve excellent waterproof and humidity function. In addition Through, it has the characteristics of windproof and warmth. After reunion with other fabrics, it is widely used in special protective clothing such as military clothing, medical clothing, leisure clothing, fire protection, anti -virus, and water dipping operations, outdoor sports clothing, shoes, hats, gloves and other auxiliary materials, as well as sleeping bags, tents, rain sets and other materials.
3. PTFE air purification film (bacterial film)
The air purification film is based on polytetrafluoroethylene as the raw material. After puffing and stretching, a microphone film is formed. This thin film is covered with special processes on various fabrics and substrates, becoming a new type of filtering material. The membrane aperture (0.05 ～ 0.45 μm) is small, distributed uniform, and large pore rate. While maintaining air circulation, you can filter all dust particles including bacteria to achieve the purpose of purifying and ventilation. Microelectronics and laboratory consumables.
4. PTFE hydrophilic membrane
The PTFE liquid filter membrane has the characteristics of surface filtering mechanism and high pores, and has a high flux that is difficult to achieve by other filter membranes. Hydrophilic PTFE micropores -instead of PES, N6, and PVDF filter film, which is used for high -temperature liquid filtration has excellent biological safety, chemical inertia, low adsorption and high temperature resistance. Pore diameter 0.2um, large, high, high strength, and high temperature do not fall off. It is suitable for filtration of strong acid and strong alkaline solution, sterilization and filtration of medicinal solution terminals, high -temperature liquid filtration, water treatment and other filter materials that cannot be competent.
