公开(公告)号：US06270909B1

公开(公告)日：2001-08-07

申请号：US09285882

申请日：1999-04-07

申请人： Jeffrey D. Moulton ,  Edward L. Healy ,  Takashi Nakahara

发明人： Jeffrey D. Moulton ,  Edward L. Healy ,  Takashi Nakahara

IPC分类号： B32B2708

CPC分类号： B32B27/18 ,  B32B7/12 ,  B32B27/08 ,  B32B27/34 ,  B32B37/153 ,  B32B2307/50 ,  B32B2377/00 ,  Y10T428/31725 ,  Y10T428/31743 ,  Y10T428/31746 ,  Y10T428/3175 ,  Y10T428/31757 ,  Y10T428/31913

摘要： The invention provides multilayered polymethylpentene-containing release films, processes for making the same and for their use in preparing articles comprises cured fiber reinforced epoxy, phenolic or polyacrylate compositions which file use as aerospace structural elements. The films have improved release properties when exposed to high temperatures. The films are non-oriented and multilayered comprising a polyamide layer, a polymethylpentene layer and an adhesive interlayer therebetween. The a polyamide layer has a heat stabilizer; and polyamide blend composed of from about 30% to about 80% of a nylon 6 polymer having a number average molecular weight of at least about 40,000; from about 10% to about 30% of a nylon 6,66 copolymer having a number average molecular weight of at least about 15,000; and from about 5% to about 40% of a nylon 6,12 copolymer having a number average molecular weight of at least about 10,000. The a polymethylpentene layer has a heat stabilizer; and at least one polymethylpentene homopolymer, polymethylpentene containing copolymer or a blend thereof. The adhesive interlayer is attached between a surface of the polyamide layer and a surface of the polymethylpentene layer.

摘要翻译： 本发明提供了多层含聚甲基戊烯的脱模膜，其制备方法和用于制备制品的方法包括固化的纤维增强环氧树脂，酚醛树脂或聚丙烯酸酯组合物，其用作航空航天结构元件。 当暴露于高温时，这些膜具有改善的剥离性能。 膜是非取向的，多层的，包括聚酰胺层，聚甲基戊烯层和它们之间的粘合剂中间层。 聚酰胺层具有热稳定剂; 和由约30％至约80％的数均分子量为至少约40,000的尼龙6聚合物组成的聚酰胺共混物; 约10％至约30％的数均分子量为至少约15,000的尼龙6,66共聚物; 和约5％至约40％的数均分子量为至少约10,000的尼龙6,12共聚物。 聚甲基戊烯层具有热稳定剂; 和至少一种聚甲基戊烯均聚物，含聚甲基戊烯的共聚物或其共混物。 粘合剂中间层附着在聚酰胺层的表面和聚甲基戊烯层的表面之间。