Microporous materials refer to materials whose internal micropore diameter is less than 2nm. In the membrane industry, PTFE liquid filtration membrane has always been one of people’s choices among many membrane materials.
Let’s learn more about it.
Various industrial wastewater and domestic wastewater pollute our water resources, and these wastewaters usually have complex composition and are difficult to treat, resulting in an increasing shortage of clean water sources available in our lives. 40% of the world’s population faces water shortages. The problem of resource shortage can only be alleviated by making more rational use of limited resources.
The transverse stretching stage is a key step in controlling the microporous structure and thickness of PTFE liquid filtration membrane.
During the transverse stretching process, each part of the film along the transverse stretching direction is stretched unevenly, and transverse stretching is an uneven stretching process.
Compared with the two sides of the film, the stretch in the middle part is relatively small. Uneven transverse stretching causes the middle region of the film in the transverse stretching direction to have small pores and low porosity, while the two sides have large pores and porosity.
The difference in microporous structure in the transverse stretching direction of the film will affect the waterproof and moisture-permeable properties of the film and its laminated fabric.
We are a manufacturer specializing in the production of ptfe liquid filtration membrane materials. In the field of industrial sewage treatment, we have the characteristics of “uniform and stable, high efficiency and low resistance, long life, customizable, easy cleaning and maintenance” and are accepted and loved by the majority of enterprises. .
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