| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a polystyrene-based resin extrusion foamed plate excellent in stability, adiabaticity and fire resistance of an extrusion foam by a simple and efficient recycle method.SOLUTION: There is provided a method of manufacturing a polystyrene-based resin extrusion foamed plate by extrusion-foaming a foamable molten resin composition obtained by mixing a polystyrene-based resin composition containing flame retardant, and a physical expansion agent, and the polystyrene-based resin composition is obtained by melting and mixing a crushed material of a polystyrene-based resin extrusion foamed body containing a mixed flame retardant of 2,2-bis[4-(2,3-dibromo-2-methylpropoxy)-3,5-dibromophenyl]propane and other halogen-based flame retardant, and the polystyrene-based resin extrusion foamed plate is a recycled polystyrene-based resin composition containing the mixed flame retardant. |
