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首页> 外文期刊>Journal of Applied Polymer Science >Impact Fracture Behavior of Ethylene Ionomer and Structural Change After Stretching
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Impact Fracture Behavior of Ethylene Ionomer and Structural Change After Stretching

机译：乙烯离聚物的冲击断裂行为及拉伸后的结构变化

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We carried out tensile impact test and very low speed tensile test on ethylene-based Ionomers (E/15wt %MAA) to clarify the relation between impact tough- ness and high-ordered structure. We also studied the changes in high-ordered structure under deformation by observing Differential Scanning Calorimetory (DSC) and Small- Angle X-ray Scattering (SAXS) of fractu-red surface. Na Ionomers showed ductile fracture in both high speed tensile impact (3 mls) and very low speed tensile (2 mmlmin). The disappearance of secondary melting point (Ti) in Na Ionomers was due to the destruction of ordered structure surrounding the ionic aggregate. Similar behav- ior was observed in 60% (or less) neutralized Zn Ionomers. However, 80% neutralized Zn Ionomer showed brittle failure in high-speed tensile impact, and Ti did not disap- pear. SAXS studies of Na and Zn Ionomers after fracture, show no change both after molding (no aging) and after aging.
机译：我们对基于乙烯的离聚物（E / 15wt％MAA）进行了拉伸冲击试验和超低速拉伸试验，以阐明冲击韧性与高序结构之间的关系。我们还通过观察分形表面的差示扫描量热法（DSC）和小角X射线散射（SAXS）研究了变形下高阶结构的变化。 Na离聚物在高速拉伸冲击（3毫升）和极低速拉伸（2毫米/分钟）中均显示出韧性断裂。 Na离聚物中次级熔点（Ti）的消失是由于破坏了离子聚集体周围的有序结构。在60％（或更少）的中和锌离聚物中观察到类似的行为。但是，80％中和的Zn离聚物在高速拉伸冲击中表现出脆性破坏，而Ti没有消失。断裂后的Na和Zn离聚物的SAXS研究表明，成型后（无时效）和时效后均无变化。

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