Inorganic fiber
AssigneeUnifrax I LLC
InventorsBruce K. Zoitos, Michael J. Andrejcak
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Abstract
An inorganic fiber containing silica and magnesia as the major fiber components and which further includes an intended iron oxide additive to improve the dimensional stability of the fiber. The inorganic fiber exhibits good thermal insulation performance at 1400° C. and greater, retains mechanical integrity after exposure to the use temperature, and which remains non-durable in physiological fluids. Also provided are thermal insulation product forms comprising a plurality of the inorganic fibers, methods of preparing the inorganic fiber and of thermally insulating articles using thermal insulation prepared from a plurality of the inorganic fibers.
Claims18
An inorganic fiber comprising a fiberization product of greater than 75 weight percent silica, about 15 to less than 25 weight percent magnesia, and 1 to about 10 weight percent iron oxide, measured as Fe2O3, wherein said inorganic fiber exhibits a shrinkage of 10% or less at 1400° C. for 24 hours.
An inorganic fiber comprising a fiberization product of about 70 to about 80 weight percent silica, about 15 to less than 25 weight percent magnesia, and greater than 5 to about 10 weight percent iron oxide, measured as Fe2O3, wherein said inorganic fiber exhibits a shrinkage of 10% or less at 1400° C. for 24 hours.
Dependencies are inferred from the claim text.