High-efficiency separation material polytetrafluoroethylene membrane
Polytetrafluoroethylene film, referred to as PTFE film.
In fact, people have noticed the outstanding properties of polytetrafluoroethylene among polymer materials a long time ago.
With excellent high and low temperature properties, outstanding chemical stability, and good dielectric properties, it is an ideal material for particle separation membranes under some harsh conditions.
In 1973, the American company GORE successfully developed a polytetrafluoroethylene film using biaxial stretching technology, which marked that the industrial application of polytetrafluoroethylene films was technically mature.
After more than 30 years of development, polytetrafluoroethylene film, as a new type of membrane material, has been widely used in clothing and industrial fields.
The biaxial stretching process of ptfe film gives the film good void characteristics and at the same time makes the mechanical properties of the film anisotropic. This anisotropic characteristic will directly affect the composite of the film and composite materials. usage performance.
The research and development of polytetrafluoroethylene films in my country is relatively late, lagging behind developed countries such as Europe, the United States and Japan.
The current production processes of PTFE film include calendering film method, turning film method and stretching film method.
The stretched film method can be divided into uniaxial stretching and biaxial stretching. Through structural analysis and actual measurement, only biaxially stretched film has a good microporous structure. Simply put, it is to combine PTFE fine powder with additives After thorough mixing, the powder enters the extruder, and the powder is pushed to extrude PTFE strips, which are then rolled into film sheets under a rolling machine. The additives are then heated and volatilized to remove the additives, and biaxially stretched to obtain a PTFE film.
It is an environmentally friendly new material manufacturer integrating R&D, production, customization and sales.
Specializes in the production of PTFE filter membranes and other polytetrafluoroethylene (PTFE) membrane materials.
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