Ceramic foam and a process for forming the same

Details Ceramic foam and a process for forming the same Ceramic foam and a process for forming the same

1989-05-08

1991-08-13

Group, Karl

Compositions: ceramic

Ceramic compositions

Pore-forming

210506, 2105101, 501 80, 501 82, 501 85, 501 88, 501 95, C04B 3806

Patent

active

050393405

ABSTRACT:
The present invention relates to a ceramic foam material, preferably a ceramic foam filter, prepared by providing an open cell flexible foam having a plurality of interconnected voids surrounded by a web of the flexible foam, applying an adhesion promoting material to at least one surface of the flexible foam, impregnating the flexible foam after applying the adhesion promoting material with a ceramic slurry, drying and heating the impregnated material to remove the organic component therefrom, and firing at an elevated temperature to form the filter. In a preferred embodiment, a flocked coating is formed on at least on surface of the flexible foam prior to impregnation. The flocked coating may be formed either by first applying a solution containing an adhesive to the surface(s) and thereafter applying fibers to the surface or by applying a solution containing the adhesive and the fibers.

REFERENCES:
patent: 3090094 (1963-05-01), Schwartzwalder et al.
patent: 3877973 (1975-04-01), Ravault
patent: 3939002 (1976-02-01), Washburne
patent: 4004933 (1977-01-01), Ravault
patent: 4024212 (1977-05-01), Dore et al.
patent: 4040998 (1977-08-01), Nemeth
patent: 4083905 (1978-04-01), Insley et al.
patent: 4396565 (1983-08-01), Tomita et al.

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