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首页> 外文期刊>Journal of Applied Polymer Science >INFLUENCE OF THERMOPLASTIC ELASTOMERS ON MECHANICAL PROPERTIES AND MORPHOLOGIES OF ISOTACTIC POLYPROPENE GLASS BEAD HYBRID COMPOSITES
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INFLUENCE OF THERMOPLASTIC ELASTOMERS ON MECHANICAL PROPERTIES AND MORPHOLOGIES OF ISOTACTIC POLYPROPENE GLASS BEAD HYBRID COMPOSITES

机译：热塑性弹性体对等规聚丙烯玻璃珠复合材料力学性能和形貌的影响

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Glass bead-reinforced isotactic polypropene hybrid composites containing 0-20 vol % thermoplastic elastomers were prepared to study both structure/property relationships and morphology development. Polystyrene-block-poly(ethene-co-but-1-ene)-block-polystyrene (SEBS) and the corresponding block copolymer grafted with maleic anhydride (SEBS-g-MA) were used as thermoplastic elastomers. Hybrid composites containing SEBS gave higher Young's moduli than did those containing SEBS-g-MA. The experimental Young's moduli were in good agreement with the theoretical predictions according to Lewis and Nielsen. The lower moduli of hybrid composites containing SEBS-g-MA were attributed to interlayer formation and in situ encapsulation of glass beads, resulting in core-shell particles. This elastomeric interlayer impaired the filler reinforcement. Analysis of tensile yield stress and results of lap-shear tests confirmed strong filler-polymer interactions in composites containing SEBS-g-MA. Only in excess of a critical volume fraction did SEBS-g-MA afford a significant improvement of the notched Izod impact strength. In contrast to stiffness, Izod impact strength was not influenced by the type of elastomer and morphology. Investigations of crystallization and scanning electron microscopic studies proved the in situ encapsulation of the glass beads with SEBS-g-MA, whereas SEBS addition results in separately dispersed glass beads and SEES microphases. (C) 1996 John Wiley & Sons, Inc. [References: 16]
机译：制备含有0-20％（体积）热塑性弹性体的玻璃珠增强的全同立构聚丙烯杂化复合材料，以研究结构/性能关系和形态发展。聚苯乙烯-嵌段-聚（乙烯-丁-1-烯）-嵌段-聚苯乙烯（SEBS）和接枝马来酸酐的相应嵌段共聚物（SEBS-g-MA）被用作热塑性弹性体。包含SEBS的杂化复合材料比包含SEBS-g-MA的杂化复合物具有更高的杨氏模量。根据刘易斯和尼尔森的说法，实验杨氏模量与理论预测非常吻合。包含SEBS-g-MA的杂化复合材料的较低模量归因于夹层的形成和玻璃珠的原位封装，从而形成核-壳颗粒。该弹性夹层损害了填料增强。对拉伸屈服应力的分析和搭接剪切试验的结果证实，在含有SEBS-g-MA的复合材料中，填料与聚合物之间的相互作用很强。 SEBS-g-MA仅超过临界体积分数，才能显着提高缺口悬臂梁式冲击强度。与刚度相反，悬臂梁式冲击强度不受弹性体类型和形态的影响。结晶的研究和扫描电子显微镜研究证明了用SEBS-g-MA原位封装玻璃珠，而添加SEBS则导致玻璃珠和SEES微相分别分散。 （C）1996 John Wiley＆Sons，Inc. [参考：16]

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