초록 ▼

An inorganic, phosphate-containing cellular material is manufactured from Portland cement, polyphosphoric acid and an expanding agent acting in an acidic medium. There may be added furthermore aluminous cement, oxides of calcium, zinc, aluminum, iron, hydroxides of aluminum and iron, fillers and rei

An inorganic, phosphate-containing cellular material is manufactured from Portland cement, polyphosphoric acid and an expanding agent acting in an acidic medium. There may be added furthermore aluminous cement, oxides of calcium, zinc, aluminum, iron, hydroxides of aluminum and iron, fillers and reinforcing agents. By intense intermixing of the starting products a mixture is prepared which has an equivalent ratio of (Al+Mg+CA+Fe) to phosphate of 0.8:1 to 3.0:1. The mixture foams, is charged to a mold, heated if necessary to a temperature of 80°C., and after completed exothermal reaction hardened under heat.

대표청구항 ▼

Inorganic substantially water-free cellular material having a density of from 100 to 500 g/l, open or closed pores having a diameter of from 0.5 to 3 mm, a thermal shrinkage of below 1%, the following composition in the solid phase: 18-50 weight % CaO 2-20 weight % Al2O3 5-35 weight % SiO2 15-50 wei

Inorganic substantially water-free cellular material having a density of from 100 to 500 g/l, open or closed pores having a diameter of from 0.5 to 3 mm, a thermal shrinkage of below 1%, the following composition in the solid phase: 18-50 weight % CaO 2-20 weight % Al2O3 5-35 weight % SiO2 15-50 weight % P2O5 0-1 weight % alkali metal oxides 0-8 weight % ZnO, MgO, FeO, and/or Fe2O3 0-2 weight % SO3 0-5 weight % C 0-8 weight % B2O3 and an equivalent ratio of (Al+Mg+Ca+Fe) to phosphate of from 0.8:1 to 3.0:1.