Inorganic foam body and process for producing same

Details Inorganic foam body and process for producing same Inorganic foam body and process for producing same

1992-07-13

1994-03-29

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

106601, 106605, 106692, 501 81, 501 84, 501127, 501128, 501 99, 501133, C04B 3800

Patent

active

052980685

ABSTRACT:
The inorganic foam body consists of an at least partially open-cell foam formed by thermally foaming and hardening a mixture comprising an alkali water glass and a filler from the group of aluminum oxide, silicon dioxide, aluminous cement, crushed rocks, graphite or mixtures thereof. It is produced by heating a mixture comprising an alkali water glass and a filler from the group of aluminum oxide, silicon dioxide, aluminous cement, crushed rocks, graphite with a blowing agent, and preferably azodicarbonamide, at temperatures of at least 180.degree. C., and preferably of from 200.degree. C. to 300.degree. C. The foam body has a bulk density within the range of from 50 to 500 kg/m.sup.3, and preferably of from 50 to 400 kg/m.sup.3.

REFERENCES:
patent: 3827869 (1974-08-01), Wulf von Bonin
patent: 4405682 (1983-09-01), Fujita et al.
patent: 4798758 (1989-01-01), Nagano et al.
Kosmatka, Steven H. et al., Design and Control of Concrete Mixtures 1988 pp. 53-56.

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