The characteristics of PVDF membrane material:
The service life of PVC membrane material is generally 1020 years. Self-cleaning and durability are not as good as PTFE building membrane.
But the price is cheap, The membrane structure material is composed of two parts: the base cloth and the coating. The base fabric is mainly made of polyester fiber and glass fiber; the coating material is mainly polyvinyl chloride and polytetrafluoroethylene. Commonly used membrane materials are polyester fiber coated polyvinyl chloride (PVC and glass fiber coated polytetrafluoroethylene (the main characteristics of TeflonPVC materials are low strength, high elasticity, easy aging, large creep and poor self-cleaning. Easy processing production, rich color, good anti-folding performance. In order to improve its performance, it can be coated with a layer of PTFE coating on its surface to improve its anti-aging and self-cleaning ability, and its life can reach about 15 years. Teflon data of high strength, elastic modulus, self-cleaning, durable fire resistance and other performance is good, but it is more expensive, not easy to fold, the production of cutting precision requirements, life expectancy is generally more than 30 years, suitable for permanent construction.
And then in the PVC bottom coating PVDF polyvinyl fluoride) resin and the formation of composite materials, PVDFArchitectural membrane material refers to the polyester fiber woven base cloth coated with PVC bottom layer. The membrane material is widely used in the existing membrane structure construction in China, and the current development trend is gradually replaced by PTFE building membrane material.