| 摘要 |
Subject-matter of the invention is an insulating board made from a mixture comprising 10 to 90% by weight of expanded and / or extruded polystyrene (1) 10 to 90% by weight of flexible polyurethane foam (2) and 10 to 90% by weight of crumb of polyurethane rigid foam (3 ), obtained from waste and 5 to 15% of a binder (4) of the liquid hardening polymers, from which it is in the form by blowing with water vapor at 30 to 75 � C produced homogenized compact material. It is intended for thermal and sound insulation of building structures and is characterized by low diffusion resistance, low thermal conductivity and high sound absorption. |
