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Polyurethane foam insulation material has excellent insulation properties and easy moldability, has a very wide range of applications in refrigeration insulation; for easy use of the mold, such as a large spherical storage tanks, large caliber shaped tubes, cold storage, building wall and roof and other insulation coated object, the best way is to spot spraying foam: This method is a polyurethane duma pan white panels for walls foam material is sprayed directly on the surface, the material quickly foam and gel form consistent with the shape of the matrix polyurethane foam insulation layer. The main advantage of the construction process of spraying include the following aspects: 1, a variety of shapes for the base, whether the plane, elevation or top surface, whether it is circular, spherical or other irregular shapes of complex objects, can be directly implementation spray foam process, no expensive mold manufacturing costs;2, the shape of the base body spray foam molding foam insulation free cost estimator wood fence install Germany conform to the shape; seamless, good thermal insulation effect; outer foam layer with a layer of dense protective skin, can better protect the internal core material, but also easy to paint brush the outer surface and further repair equipment; 3, high production efficiency, especially for large area, insulate shaped objects, forming speed, high production efficiency. The chemical composition and properties of polyether combination of materials sprayed from polyether polyols, foam stabilizers, catalysts, crosslinking agents, flame retardants, blowing agents and other minimum space deck and door components of the composition, depending on different uses can be divided into cold storage, building energy efficiency, Three main types of equipment such as thermal insulation. Polyether combination of materials usually pale yellow or reddish brown transparent viscous liquid, no matter coagulum and dilute thick and uneven, without mechanical impurities.