Fibrous insulation and process for making the same

Details Fibrous insulation and process for making the same Fibrous insulation and process for making the same

1973-10-25

1976-01-27

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Mineral fiber

106 57, 106 65, 106 69, 162145, 162181R, 162181C, 162192, 162225, 264 25, 264 66, 264 86, 264 87, 264311, D21H 518

Patent

active

039350606

ABSTRACT:
An insulative material comprises a random network of ceramic fibers and a binder for holding the fibers together. In addition, it may include a filler material composed of hollow ceramic spheres which locate at the interstices of the fibrous network and increase the strength of the network. The insulative material can withstand extremely high temperatures and thermal shock without degradation, has an extremely low density, has excellent insulating properties, and has reasonably high compressive strength. The material is formed by making a slurry which contains the ceramic fibers, with or without the filler, and the binder; felting the slurry; subjecting the felt so formed to microwave energy for drying; and firing the dried felt at 2300.degree.-3200.degree.F. to increase its strength.

REFERENCES:
patent: 2731359 (1956-01-01), Nicholson
patent: 3100734 (1963-08-01), Rex et al.
patent: 3231401 (1966-01-01), Price et al.
patent: 3253978 (1966-05-01), Bodendorf et al.
patent: 3423216 (1969-01-01), Somers
patent: 3467535 (1969-09-01), Myles
patent: 3510323 (1970-05-01), Wismer et al.
patent: 3577344 (1971-05-01), Ardary et al.
patent: 3629116 (1971-12-01), Gartner et al.
patent: 3704523 (1972-12-01), Guerga et al.
patent: 3732048 (1973-05-01), Guerga et al.
Casey J P "Pulp Paper" Vol. II. Sec. Ed. Interscience Publishers N. Y. N. Y., 1960 pp. 1004-1006.

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