PROCESS FOR PREPARING A BLOCK OF POLYURETHANE/POLYISOCYANURATE FOAM OF A SLAB FOR HEAT-INSULATING A TANK

The present invention relates to a preparation of a block of fiber-reinforced polyurethane/polyisocyanurate foam in which the expansion of the foam is constrained by the walls of a double belt laminator forming a tunnel, the block of fiber-reinforced polyurethane/polyisocyanurate foam being composed...

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Hauptverfasser: DE COMBARIEU, GUILLAUME, KITZMANN, PATRICK, DEWOLF, LAETITIA
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Sprache:eng ; pol
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creator DE COMBARIEU, GUILLAUME
KITZMANN, PATRICK
DEWOLF, LAETITIA
description The present invention relates to a preparation of a block of fiber-reinforced polyurethane/polyisocyanurate foam in which the expansion of the foam is constrained by the walls of a double belt laminator forming a tunnel, the block of fiber-reinforced polyurethane/polyisocyanurate foam being composed of cells storing a gas, advantageously having low thermal conductivity, and exhibiting a density of less than 50 kg·m−3 with a content of fibers Cf representing at least 4% by weight of the block of fiber-reinforced foam, in which the impregnation time of the fibers ti is less than the cream time tc of the polyurethane/polyisocyanurate foam.
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subjects AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
BLASTING
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
EQUIPMENT FOR SHIPPING
FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES
FIXED-CAPACITY GAS-HOLDERS
GENERAL PROCESSES OF COMPOUNDING
HEATING
LIGHTING
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
MECHANICAL ENGINEERING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
STORING OF DISTRIBUTING GASES OR LIQUIDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES
WEAPONS
WORKING-UP
title PROCESS FOR PREPARING A BLOCK OF POLYURETHANE/POLYISOCYANURATE FOAM OF A SLAB FOR HEAT-INSULATING A TANK
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