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Introduction to the Characteristics of PTFE Membrane

PTFE glass fiber membrane can be installed in the climate from the cold Arctic to hot desert heat, and the project life is expected to exceed 30 years.


The PTFE glass fiber coating is chemically inert and can withstand temperatures from -73 ° C to + 232°C. The low surface free energy of the material produces a surface that is easily cleaned by rain. It is also completely unaffected by UV degradation. This unique inertia, thermal stability, and surface properties make PTFE coated fabric films very suitable for projects requiring excellent weather and fire resistance. PTFE fiberglass structures have been constructed all over the world and are recognized by national standards of the United Kingdom, France, Italy, Australia, Japan and Germany, as well as guidelines developed by the American Society for testing and materials.


PTFE glass fiber is also certified by the energy star and cold roof rating committee. It is found that the reflected energy of the architecture PTFE membrane is as high as 73% of solar energy, while its outer surface is only 7%. Some grades of PTFE glass fiber can absorb 14% solar energy and allow 13% natural sunlight and 7% RE radiation energy (solar heat) to pass through.


Compared with steel, PTFE glass fiber yarn maintains an ultimate tensile strength of 500000 PSI and an elastic modulus of 10.5 x 106 PSI, providing 40000 PSI and 29 x 106 PSI respectively. Under normal conditions, the fabric exhibits elasticity and does not experience significant stress relaxation or creep.


Woven glass fiber gives mechanical strength to the PTFE glass fiber membrane. These filaments, called beta glass, are the smallest diameter available, providing maximum flexibility for the membrane. The fibers are drawn from the hot-melt glass through a platinum mold to form continuous filaments, which are then twisted and combined into yarn bundles. The yarn is woven into a wide structural fabric and then coated with PTFE glass fiber to complete the process.


The main factor to distinguish the architecture PTFE membrane from the traditional glass window is its favorable shading coefficient. With the improvement of lighting level, the PTFE glass fiber membrane can be used to achieve overall energy saving even in a cooler climate. In very warm climates, even at low lighting levels, PTFE fiberglass membranes save energy than conventional systems. Compared with the traditional inclined glass system, its cost is lower.


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