PVC
PVC membrane material is made of polyester fiber fabric and PVC coating (polyvinyl chloride). The membrane for general construction is coated on the surface of the PVC coating material with several micron thick acrylic resin. (acrylic) to improve antifouling. However, after a few years, it will become discolored, stained, and deteriorated. The durability of general PVC membrane is 5 ~ 8 years depending on the use environment.
Material characteristics:
1. The surface layer of PVC membrane material should have stable anti-corrosion and anti-ultraviolet corrosion ability during the shelf life, and the surface should have self-binding performance.
2. Another PVC membrane material coated with Tio2 (titanium dioxide) has extremely high self-cleaning properties. The surface layer of PVC membrane material should have stable anti-corrosion and anti-ultraviolet corrosion ability during the shelf life, and the surface should have self-binding performance.
3. After the PVC membrane material reaches the melting point in a fire environment, melting holes will appear, and the boundaries of the melting holes will burn and spread, but no open flame will be generated. According to China's GB8624 "Classification Method of Combustion Performance of Building Materials", it has been designated as B1 class flame retardant material.
4. The color, light reflection and light transmittance of the PVC membrane material should meet the requirements of the following table:
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