Production technology and application of fiber-reinforced polyurethane in building exterior walls
The manufacturing processes and properties of fiber-reinforced polyurethane sheets are reviewed as well as the research progress on their application in building exterior walls.The addition of fiber in the preparation of polyurethane foam can improve its mechanical properties,so that lightweight and low-cost polyurethane sheets can be prepared.Phosphorus-based flame retardants mixtures and flame retardant glass fibers are layered and spread in the mold during the mixing process of polyurethane rigid foam particles and glass fibers to obtain flame retardant polyurethane insulation core for external wall insulation.Polyurethane is foamed between rock wool board and aluminum plate to obtain layered polyurethane rock wool insulation and fireproof integrated sandwich panel,which can be used for building wall construction.The prefabricated wallboard composed of glass fiber reinforced rigid polyurethane foam and magnesium oxide board can be used for the composite wall of buildings.
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