TO ENHANCE THE THERMAL INSULATION OF POLYMERIC FOAM BY REDUCING CELL ANISOTROPIC RATIO AND THE METHOD FOR PRODUCTION THEREOF

There is provided a closed cell polymeric foam material comprising: a polymer having a weight average molecular weight of from approximately 30,000 to 500,000; and a blowing agent, the blowing agent comprising at least one of a fully or partially halogenated hydrocarbon, an aliphatic alcohol, and ca...

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Bibliographische Detailangaben
Hauptverfasser:	CISAR, THOMAS E, MILLER, LARRY M, BREINDEL, RAYMOND M, WEEKLEY, MITCHELL Z
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	There is provided a closed cell polymeric foam material comprising: a polymer having a weight average molecular weight of from approximately 30,000 to 500,000; and a blowing agent, the blowing agent comprising at least one of a fully or partially halogenated hydrocarbon, an aliphatic alcohol, and carbon dioxide; wherein the cell orientation ratio of the polymeric foam material in the x/z direction is from approximately 0.5 to 0.97 and anisotropic ratio range is from 1.6 to 1.03. L'invention porte sur des produits isolants spumeux et en particulier sur des mousses extrud~es de polystyrne ~ orientation am~lior~e des cellules et rapport d'anisotropie des cellules r~duit, et sur leur proc~d~ de production, en am~liorant les propri~t~s isolantes et en r~duisant les coÛts de fabrication. L'invention porte par ailleurs sur des produits isolants spumeux ~ r~sistance ~ la compression am~lior~e obtenus par r~duction de l'orientation des cellules et accroissement de leur rapport d'anisotropie.