PC/ABSポリマーアロイのき裂進展特性に及ぼすモルフォロジの影響

概要

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The purpose of this study is to investigate the effect of morphology on the tensile properties and fracture properties of PC/ABS polymer alloy. From TEM observation the co-continuous phase structure is formed in PC/ABS (60/40) . PC and ABS form continuous and dispersed phase in PC/ABS (80/20) , respectively. The yield stress, Possion's ratio and tensile strength follow the law of mixture. The Young's modulus in co-continuous morphology appears the maximum value. Wihle, the crack growth (extension) resistance in PC/ABS (80/20) is more excellent than other morphologies. On this samples, SEM observation shows pulling ABS dispersed phase out of the fractured surface. Furthermore, TEM observation appears that the boundaries of rubber particles underneath the fractured surface have irregular and jagged shape. The reason of its higher crack extension resistance, consequently, is the multiplied effect of release of tri-axial stress and energy consumption of damaged rubber particles.
一般社団法人日本機械学会の論文
2000-06-25