High strength ceramic fiber board
AssigneeThe Carborundum Company
InventorsJames R. Olson, Mark D. Stahlman
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Abstract
A high strength ceramic fiber board having a green strength of at least 300 psi and a green density of less than about 22 lb/ft.sup.3 ; and having a composition comprising 65-97.5% wt. ceramic fiber, 1-10% wt. PVA fiber, 0.5-10% wt. cationic starch, 0-25% wt. clay filler and 1.0-15% wt. colloidal silica.
Claims9
A high strength ceramic fiber board having a green strength of at least 300 psi and a green density less than about 22 lb/ft.sup.3 formed from a composition comprising 65-97.5% wt. ceramic fiber, 1-10% wt. PVA fiber, 0.5-10% wt. cationic starch, 0-25% wt. clay filler and 1.0-15% wt. colloidal silica.
A high strength ceramic fiber board having a green strength of at least 300 psi and a green density less than about 30 lb/ft.sup.3, and wherein said ceramic fiber board is machinable without significant breakage.
Dependencies are inferred from the claim text.