FILLED POLYURETHANE COMPOSITES AND METHODS OF MAKING SAME

Composite materials and methods for their preparation are described herein. The composite materials include a polyurethane made from the reaction of an isocyanate and a mixture of polyols, and coal ash (e.g., fly ash). The mixture of polyols comprises at least two polyols including a high hydroxyl n...

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Bibliographische Detailangaben
Hauptverfasser:	HERRINGTON, RONALD, M, JIAN, KENGQING
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIME, MAGNESIA MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REFRACTORIES SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF NATURAL STONE USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Composite materials and methods for their preparation are described herein. The composite materials include a polyurethane made from the reaction of an isocyanate and a mixture of polyols, and coal ash (e.g., fly ash). The mixture of polyols comprises at least two polyols including a high hydroxyl number polyol having a hydroxyl number greater than 250 and comprising from about 1% to about 25% by weight of the total polyol content used to form the polyurethane, and a low hydroxyl number polyol having a hydroxyl number of 250 or lower. The coal ash is present in amounts from about 40% to about 90% by weight of the composite material. Also described is a method of preparing a composite material, including mixing an isocyanate, a mixture of at least two polyols, coal ash (e.g., fly ash), and a catalyst. L'invention porte sur des matériaux composites et sur des procédés permettant de les fabriquer. Les matériaux composites comprennent un polyuréthane obtenu par la réaction d'un isocyanate et d'un mélange de polyols, et de cendres de charbon (par exemple cendres volantes). Le mélange de polyols comprend au moins deux polyols comprenant un polyol à indice d'hydroxyle élevé, ayant un indice d'hydroxyle supérieur à 250 et représentant d'environ 1 % à environ 25 % en poids de la teneur totale en polyols utilisée pour former le polyuréthane, et un polyol à faible indice d'hydroxyle, ayant un indice d'hydroxyle de 250 ou au-dessous. Les cendres volantes sont présentes dans des quantités d'environ 40 % à environ 90 % en poids du matériau composite. L'invention porte également sur un procédé de fabrication d'un matériau composite, comprenant l'opération consistant à mélanger un isocyanate, un mélange d'au moins deux polyols, des cendres de charbon (par exemple des cendres volantes) et un catalyseur.