| 摘要 |
<p>An inorganic-organic composite foam having a foam structure made from phosphates and a foaming agent for phosphates and improved in brittleness by a urethane prepolymer having NCO groups. Such a composite foam is produced by mixing phosphates with a foaming agent for phosphates, a urethane prepolymer having NCO groups, water, and, if necessary, an inorganic filler, and subjecting the obtained mixture to foaming and curing. This foam is a flexible and impact-resilient foam obtained by improving the brittleness of a phosphate foam which is substantially brittle in itself. The above foam is effectively usable as a heat insulator for the fire-resistant inner and outer wall panels of trains, automobiles, houses, buildings, and so on; sound insulator and fire-resistant material for floor and wall; heat insulator for fire-resistant safes, refrigerators, freezers, and so on; fire-resistant covering material; lightweight aggregate; space-filling material; fireproof synthetic wood, and so on.</p> |
