It has been more than 60 years since the American DuPont Company began producing polytetrafluoroethylene in 1945.
As an important product of ptfe, polytetrafluoroethylene bubble film is widely used.
The currently common membrane separation process uses pressure difference as the driving force and is carried out in a cross-flow filtration method. It can carry out molecular-level filtration and separation at room temperature. It is a physical process without phase change during it.
Power is provided by a pump. When flowing through the membrane surface, some smaller molecules pass through the membrane, while large molecules are retained.
The polytetrafluoroethylene bubble-point membrane produced has high porosity, small and uniform pore size. Therefore, the membrane can achieve higher efficiency with lower resistance. It can not only effectively intercept dust particles, but also achieve the highest accuracy. H14 level (99.995%) or above, it also allows the vacuum cleaner to maintain low energy consumption, and the material can be washed to restore performance and be reused, greatly extending the service life, which greatly reduces costs.
In addition, the material has excellent high temperature resistance, high temperature resistance, low temperature resistance, alkali resistance, anti-aging, anti-oxidation, electrically insulated wire, hydrophobicity, non-toxicity, high lubrication, non-adhesion, weather resistance, and chemical resistance. and many other features.
Therefore, it is widely used in air filtration, aviation, electronics, electrical appliances, chemical industry, machinery, construction, textile, medicine and many other fields.
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