広範囲ひずみ速度における特異な相構造を有するポリプロピレン/ポリアミド11アロイの圧縮変形特性

抄録

Polypropylene/Polyamide11 (PP/PA11) alloy has a unique phase structure, which is called “salami structure”, of nano order. It has been found that this material is superior to a polycarbonate alloy known as an impact resistant resin. However, the impact evaluation method is Charpy test or puncture test. Therefore, the compressive strength of PP/PA11 alloy and its strain rate dependence are unknown. In this study, in order to elucidate the compressive deformation properties of Polypropylene/Polyamide11 alloy with unique phase structure at a wide range of strain rates, this dynamic deformation properties are evaluated using a cam mechanism. 100%PP/PA11 alloy (PP/PA11) and 100%PP (PP) were prepared. First, the elastic response of PP is higher than that of PP / PA11. It is considered that the rigidity of the entire specimen is reduced due to the internal PA11 phase. In the early stage of deformation, which exceeds the elastic response and has a strain of approximately 0.2 or less, PP has higher flow stress than PP/PA11. On the other hand, the flow stress of PP/PA11 becomes higher than PP as the strain increases. The difference becomes more prominent as the strain increases. This tendency is similar to the results of the previously reported the impact test.