Membrane structure shed What kind of membrane is commonly used inside? What kind of membrane is used in the membrane structure shed is strange to users who contact the membrane structure shed. The materials used for the film structure shed are generally composed of base cloth and paint. The base cloth is mainly made of polyester fiber and glass fiber, and the coating materials are mainly polyvinyl chloride and polytetrafluoroethylene.
Two kinds of membrane materials are usually used to make the membrane structure shed, mainly PTFE membrane and PVC membrane.
PVC film is a special membrane structure material for our car shed: PVC film structure car shed is mainly characterized by low strength, large elasticity, easy aging, large creep, poor self-cleaning, but cheap price, easy processing and manufacturing, rich colors, and good folding resistance. In order to improve its performance, polytetrafluoroethylene coating can be coated on the surface of the membrane structure shed to improve its anti-aging and self-cleaning ability, and its service life can reach about 15 years. PVDF building membrane material is a composite material formed by coating PVC bottom layer on polyester fiber woven substrate and PVDF resin on PVC bottom layer. The membrane structure of automobile shed material has been widely used in the existing membrane structure construction in China, and the current development trend is gradually replaced by the polytetrafluoroethylene building membrane material. Compared with PTFE, the strength and fire resistance of PVDF building membrane materials (PVC membrane materials) have a certain gap. The service life of PVC membrane materials is generally 10-20 years. Self cleaning and durability are not as good as polytetrafluoroethylene building membrane materials.
Compared with PVC, PTFE film is less used in the shed. The main reason is the cost price: the fabric substrate of PTFE film material is glass fiber, and the fiber diameter should be 3.30-4.05 μ The weight shall be greater than 150g/m, the main material of the coating shall be polytetrafluoroethylene resin, the content shall not be less than 90%, the weight of the coating shall be greater than 400g/m, and the thickness of the polytetrafluoroethylene membrane material shall be greater than 0.5mm. It can prevent chemical corrosion and ultraviolet corrosion, is not easy to age, and has self-cleaning performance in rainwater.
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