GYPSUM COMPOSITE MODIFIERS

Anhydrite calcium sulfate whiskers are prepared by combining alpha calcium sulfate hemihydrate and water to form a slurry, autoclaving the slurry to form alpha calcium sulfate hemihydrate whiskers in water, dewatering the alpha calcium sulfate hemihydrate whiskers, and heating the alpha calcium sulf...

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Bibliographische Detailangaben
Hauptverfasser:	WU, MIANXUE, DONALDSON, PIERRE, BODIFORD, BILL, FIELDS, JEFFREY T
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS CONCRETE CRYSTAL GROWTH GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL REFRACTORIES SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH SLAG TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Anhydrite calcium sulfate whiskers are prepared by combining alpha calcium sulfate hemihydrate and water to form a slurry, autoclaving the slurry to form alpha calcium sulfate hemihydrate whiskers in water, dewatering the alpha calcium sulfate hemihydrate whiskers, and heating the alpha calcium sulfate hemihydrate whiskers to form anhydrite calcium sulfate whiskers. A composite includes alpha-derived anhydrite calcium sulfate whiskers and a base material and is prepared by combining alpha-derived anhydrite calcium sulfate whiskers with a base material to form a composite. La présente invention concerne des trichites de sulfate de calcium d'anhydrite qui sont préparés par combinaison de sulfate de calcium alpha hémihydraté et d'eau pour former une bouillie, passage en autoclave de la bouillie pour former des trichites de sulfate de calcium alpha hémihydraté dans de l'eau, déshydratation des trichites de sulfate de calcium alpha hémihydraté et chauffage des trichites de sulfate de calcium alpha hémihydraté pour former des trichites de sulfate de calcium d'anhydrite. Un composite comprend des trichites de sulfate de calcium d'anhydrite alpha-dérivés et un matériau de base et est préparé en combinant les trichites de sulfate de calcium d'anhydrite alpha-dérivés avec un matériau de base pour former un composite.