Alumina fiber aggregate, process for producing the same, and use thereof

A process for producing the alumina fiber aggregate which, when examined by the electron microscope method, gives a frequency distribution regarding number of fibers, wherein the number of fibers having a fiber length of 50-200 μm is 70% or more (including 100%), the number of fibers having a fiber...

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Bibliographic Details
Main Authors OHSHIMA YASUTAKA, HIRANO ISAMU, HIGUCHI TAKAYUKI
Format Patent
LanguageEnglish
Published 26.02.2013
Subjects
BRAIDING
CHEMISTRY
COMPOSITIONS BASED THEREON
COTTON-WOOL
FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS
KNITTING
LACE-MAKING
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL
METALLURGY
NON-WOVEN FABRICS
ORGANIC MACROMOLECULAR COMPOUNDS
TEXTILES
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRIMMINGS
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
WADDING
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Summary:A process for producing the alumina fiber aggregate which, when examined by the electron microscope method, gives a frequency distribution regarding number of fibers, wherein the number of fibers having a fiber length of 50-200 μm is 70% or more (including 100%), the number of fibers having a fiber length smaller than 50 μm is 30% or less (including 0), the number of fibers of 50-100 μm is 30-50%, the number of fibers longer than 100 μm but not longer than 200 μm is 30-50%, and the number of fibers longer than 200 μm is 20% or less (including 0). The process including the steps of grinding cottony alumina-based fibers comprising 70-100% by mass of Al2O3 and 0-30% by mass of SiO2 while applying a pressure of 0.1-20 MPa thereto and then classifying the ground fibers.
Bibliography:Application Number: US201213594590