At present, in response to the diverse needs of polytetrafluoroethylene microporous membranes, the ptfe liquid filtration membranes developed and produced are widely used by domestic and foreign customers and occupy an important position in the industry.
As early as the mid-18th century, someone discovered the membrane phenomenon, but it was only in the past 50 years that the membrane process was actually applied to the industrial field.
In my country, the membrane industry started in the 1960s. After decades of development, membrane technology has become an emerging and mature chemical separation technology.
The mature and developed PTFE liquid filtration membrane, reverse osmosis, ultrafiltration, microfiltration, nanofiltration, electrodialysis, gas separation, inorganic membrane, pervaporation, membrane contact, membrane reaction and controlled release technologies are currently in use In industrial production, it has produced good economic and social benefits.
The membrane separation process has become an important high-tech and sustainable development technology foundation for solving contemporary energy, resource and environmental pollution problems.
Among them, microfiltration is currently the most commonly used pressure-driven membrane technology with the largest sales volume. It is mainly used for the separation, purification, concentration and purification of particles, and is widely used in food, medicine, drinking water, Urban sewage treatment, etc.
The ptfe liquid filtration membrane processed by biaxial stretching technology gives the film good void characteristics. After the film is stretched in different directions, the structure of the micropores and agglomeration of the film changes, and at the same time the mechanical properties of the membrane are improved. Performance has anisotropic characteristics.
Because of its wide operating temperature range, small friction coefficient, stable chemical properties, low surface energy, microporous structure and other characteristics, it is widely used in environmental protection and chemical fields such as air dust removal, air sterilization, and water filtration.
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