聚丙烯
材料科学
共聚物
粘附
弹性体
乙烯
复合材料
辛烯
结晶度
高分子化学
聚合物
高分子科学
有机化学
化学
催化作用
作者
Marco Dondero,J. M. Pastor,José M. Carella,Claudio Javier Pérez
摘要
Abstract Two types of random semicrystalline copolymers (ethylene–octene and ethylene–butene) were overmolded on a core polypropylene. Maximum solid–liquid interface temperature achieved for the overmolding injection process is used as the key parameter for adhesion control. The main bonding process is shown to be a Rouse‐type fingering mechanism that develops in short time scales. Normalized peel tests were conducted on overmolded samples to measure the resulting polypropylene copolymers' bonding strength. All the ethylene random copolymers used for this study give good adhesion to polypropylene in overmolding processes, provided the right range of interface temperature is reached. Adhesion strength can be easily controlled for efficient debonding and recycling of used overmolded parts. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers
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