Polyurethane foam spraying, foaming and forming method
The invention discloses a polyurethane foam spraying, foaming and forming method. The method comprises the following steps: 1, weighing materials according to a ratio, putting the materials into a batching kettle, uniformly stirring at room temperature, opening the batching kettle, heating to a use...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
11.01.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a polyurethane foam spraying, foaming and forming method. The method comprises the following steps: 1, weighing materials according to a ratio, putting the materials into a batching kettle, uniformly stirring at room temperature, opening the batching kettle, heating to a use temperature in an oil bath, and preparing a white material; and 2, mixing the white material with polymethylene polyphenyl isocyanate PAPI, and spraying the mixture on the surface of a workpiece to form a foam structure. The foam structure with low density, high hardness, high compression strength, good dimensional stability and good temperature resistance is obtained by controlling the composition of the white material and carrying out spraying foaming molding, so that the requirements of the foam structure on high rigidity and good dimensional stability are met, and the foam material is suitable for workpieces with complex structures and more irregular parts with concave-convex surfaces, the forming efficiency is |
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Bibliography: | Application Number: CN202111197921 |