Membrane structure sunshade The membrane material used for the structure is a high-strength composite material with high strength, flame retardancy, durability, self-cleaning and other characteristics, which is generally composed of substrate and coating. The base cloth is mainly made of high-strength polyester fiber or glass fiber yarn, and there are many weaving methods, such as flat weaving and twisting. Different weaving methods of the membrane structure shed affect the mechanical properties of the membrane material in the warp and weft directions, providing tensile strength and tear resistance of the membrane;
The coating materials mainly include polytetrafluoroethylene and polyvinyl chloride, which has improved the strength indicators of the membrane materials to a certain extent. In order to improve the durability, self-cleaning and other characteristics of the membrane materials, there is often a layer of fluorine coating or silicon coating on the surface, providing the membrane materials with fire resistance, durability, waterproof, self-cleaning and other properties, which determines the physical characteristics of the membrane materials.
Membrane structure shed membrane material is a kind of high strength and soft fabric, with high tensile strength and certain tear resistance, but its in-plane compressive and bending strength is almost zero, shear strength is also very low, and it has certain anisotropic and geometric nonlinear properties of the material, and is prone to stress relaxation and creep when used
The shed of membrane structure shall be cleaned regularly with professional cleaning agent. From a technical point of view, the membrane structure shed does not necessarily need cleaning. For most membrane materials, cleaning cannot extend their working life, on the contrary, improper cleaning will shorten their life.
The film surface will be very slippery when it is wet, so safety measures such as safety rope and anti falling net should be used. Considering that the old buildings may be broken and damaged during cleaning, safety nets should be arranged under them.
