| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a plate-like extruded foam which is capable of maintaining a high closed cell ratio even when an expansion ratio is increased, and is excellent in the balance between foam density and product strength.SOLUTION: The plate-like extruded foam of the present invention contains a vinyl aromatic hydrocarbon polymer composition that contains a linear vinyl aromatic hydrocarbon polymer (A) and a branched vinyl aromatic hydrocarbon polymer (B) in which a vinyl aromatic hydrocarbon chain is bonded to a conjugated diene moiety of a block copolymer comprising a vinyl aromatic hydrocarbon and a conjugated diene, and that satisfies predetermined requirements. In addition, in the plate-like extruded foam, (A) and (B) contain specific components. Furthermore, the plate-like extruded foam is configured to satisfy specific conditions.</p> |
