Acoustical insulating foam from compatibilized blends of poly (vinyl aromatic) polymers and poly (alpha -olefin) polymers

摘要

Foams made from a ternary blend of a alkenyl aromatic polymer such as polystyrene, an alpha-olefin polymer such as polyethylene, and a compatibilizer, are used as acoustical insulation in building constructions. These foams exhibit an unusual combination of low creep and low dynamic stiffness. They are especially useful in floating floor installations.