Ceramic foams and process of preparing the same

Details Ceramic foams and process of preparing the same Ceramic foams and process of preparing the same

1981-10-05

1984-01-03

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Pore-forming

264 63, 501 85, C04B 2102, C04B 4302, C04B 4310

Patent

active

044242808

ABSTRACT:
The disclosure describes ceramic foams, for example made of clay, and a process for preparing these foams. Once there is obtained a mixture defining a slip, the latter is caused to be foamed by the addition of controlled quantities of a gas, such as air, thus making it possible to reproduce foams having predetermined physical properties. It is preferable to dry the foam under conditions where the temperature is heterogeneous and in the absence of ventilation. This operation can be carried out by placing the foam under heating elements at a temperature between 30.degree. C. at the start to 100.degree. C. towards the end of the drying, while practically preventing any ventilation in the vicinity of the foam. This process is mainly advantageous in that it enables one to control the physical properties of the foam obtained thereby. This foam can be used as an industrial absorbent, acoustical insulating material, fire-wall, thermal insulating material, etc. by varying the density of the foam.

REFERENCES:
patent: 4123284 (1978-10-01), Rieger

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