| 摘要 |
PROBLEM TO BE SOLVED: To provide a polystyrene foamed molding which is excellent in adiabaticity and has excellent dimensional stability allowing use under high-temperature conditions.SOLUTION: A polystyrene foamed molding is composed of a plurality of foamed particles fused together, with a styrene resin as a base resin. The foamed particles have (1) a Z average molecular weight (Mz) of the surface of 1,150,000-2,500,000, measured by GPC, and a Mz of the whole body of 850,000-1,100,000, (2) an average cell diameter of 150-300 μm and (3) a thickness of the grain boundary wall, composed of a plurality of outermost walls of adjacent foamed particles, of 2.0-10.0 μm. |
