Process for manufacturing a heat insulating material

Details Process for manufacturing a heat insulating material Process for manufacturing a heat insulating material

1995-03-16

1996-09-17

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

C04B 4145

Patent

active

055565867

ABSTRACT:
A process for manufacturing a heat insulating material including alumina based fibers and aluminosilicate binder. The process includes the steps of: (a) milling alumina based fibers, having a mean diameter less than or equal to 2 .mu.m, in water until a mean aspect ratio (l/d) of 30 to 130 is obtained; (b) vacuum molding a billet from the resulting aqueous, fibrous, flowing slurry; (c) fixing the billet in a frame, while compressing it slightly; (d) drying the slightly compressed billet in the frame to form a dried billet; (e) preparing an aluminosilicate binder having low durability; (f) impregnating the dried billet, fixed in the frame, with the binder; (g) gelling the binder to produce a semi-finished product; (h) removing the semi-finished product from the frame; (i) drying the semi-finished product; and (j) firing the semi-finished product.

REFERENCES:
patent: 4735757 (1988-04-01), Yamamoto et al.

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