| 摘要 |
<p>Synthetic materials, particularly foams, hardly inflammable which, following and endothermal reaction under high temperatures, exhibit flamme-proof characteristics. Particularly uninflammable are the construction elements of a foam core (1) made of polyurethane, essentially comprised of closed spherical pores (2) and solid material ribs (3), having at the surface layers (4, 5) which are also made of polyurethane and which are integral with the core (1). The solid material ribs enclose preferably, in their structure, an ammonium phosphate or polyphosphate, dehydrated borax or not and/or melanin.</p> |
