| 摘要 |
<p>The proposed invention refers to a foamed gypsum material having a porous structure and containing a polycarbamide which is characterized by having a specific weight within the range of 0,1 up to 0,4 g/cm3, an open cell structure and as a polycarbamide contains a product of condensation of diphenylmethane-4,4'-diisocianate and water, as well as to the process of its preparation. The proposed invention refers to the use of the foamed gypsum material as a sound and/or thermal insulating material as well.</p> |
