Polytetrafluoroethylene microporous membrane, foreign name: PTFE microcellular film, is a semi-finished product made of rods and strips extruded from polytetrafluoroethylene, rolled into a film, stretched at a temperature below the melting point, and obtained after heat setting A porous product.
In industries such as pharmaceuticals and electronic semiconductor production, there are higher cleanliness requirements for air. Semiconductor production requirements are that there should be no more than 1 particle per cubic foot of air, while in a normal environment, there are 500,000 particles per cubic foot of air. above.
Therefore, it also has good filterability for special gases with high temperature, high humidity, high corrosion and organic liquids.
So PTFE microporous membrane is widely used in medical, electronics, precision machinery and other industries.
Generally, polytetrafluoroethylene (ptfe) suspended powder is used as raw material, and is expanded and stretched to form a microporous film.
Bubble point film has a fibrillar microporous structure with a porosity of more than 88%, 1.4 billion micropores per square centimeter, and a pore size range of 0.1μm-0.5μm. This film is coated on various fabrics using a special process And the substrate, it can become a new type of filter material. The membrane has small pore size, uniform distribution and large porosity. While maintaining air circulation, it can filter all dust particles including bacteria, achieving the purpose of advanced purification and ventilation.
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