FOAMABLE ETHYLENE POLYMER

The invention relates to a foamable ethylene polymer composition comprising at least one antioxidant, at least one process aid and at least 80 wt% of a peroxide-treated ethylene polymer composition. The foamable ethylene polymer composition has melt strength of at least 2 cN, a density of 940 to 970...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HJERTBERG THOMAS, HAGSTRAND PER-OLA, HERMANSSON ASA, BERGQVIST MATTIAS
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	The invention relates to a foamable ethylene polymer composition comprising at least one antioxidant, at least one process aid and at least 80 wt% of a peroxide-treated ethylene polymer composition. The foamable ethylene polymer composition has melt strength of at least 2 cN, a density of 940 to 970 kg/m , and dissipation factor measured at 1.9 GHz of 50-80- 10-6. The invention further relates to a process for making such a foamable ethylene polymer composition, and use of the foamable ethylene polymer composition in a foamed cable insulation. 本发明涉及可发泡乙烯聚合物组合物，其包含至少一种抗氧化剂、至少一种加工助剂和至少80wt％的过氧化物处理的乙烯聚合物组合物。所述可发泡乙烯聚合物组合物具有至少2cN的熔体强度、940kg/m至970kg/m的密度和在1.9GHz测量的50-80-10的耗散因数。本发明还涉及用于制作这种可发泡乙烯聚合物组合物的方法，以及所述可发泡乙烯聚合物组合物在发泡电缆绝缘中的用途。