Shape memory products and method for making them

A heat-shrinkable shape memory product is produced by injection moulding a melt-mixed crosslinkable polymer composition, preferably comprising polyethylene and ethylene-vinyl acetate (EVA) copolymer. The composition also contains a micro encapsulated foaming agent and acrosslinking agent, and the te...

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Bibliographische Detailangaben
1. Verfasser:	KURUP SREENI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING 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:	A heat-shrinkable shape memory product is produced by injection moulding a melt-mixed crosslinkable polymer composition, preferably comprising polyethylene and ethylene-vinyl acetate (EVA) copolymer. The composition also contains a micro encapsulated foaming agent and acrosslinking agent, and the temperature and pressure conditions are selected so that foaming and expansion of the composition takes place not in the injection moulding machine but in the mould itself. 通过将熔融混合的能交联的聚合物组合物注射成型而制造能热收缩的形状记忆产品，所述组合物优选包括聚乙烯和乙烯-乙酸乙烯酯(EVA)共聚物。所述组合物还包含微包封的发泡剂和交联剂，且选择温度和压力条件使得组合物的发泡和膨胀不是在注射成型机中、而是在模具本身中发生。