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首页> 外文期刊>Journal of Applied Polymer Science >Effects of calcium carbonate and compounding sequence on the phase morphology and properties of maleic anhydride-grafted polypropylene compatibilized polyamide 6/polypropylene blend
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Effects of calcium carbonate and compounding sequence on the phase morphology and properties of maleic anhydride-grafted polypropylene compatibilized polyamide 6/polypropylene blend

机译：碳酸钙和配合顺序对马来酸酐接枝聚丙烯增容聚酰胺6 /聚丙烯共混物相形态和性能的影响

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摘要

Effects of calcium carbonate (CaCO _3) and compounding sequence on the phase morphology of maleic anhydride-grafted polypropylene (MAPP) compatibilized polyamide 6 (PA6)/polypropylene (PP) blend were investigated. The morphology in the subskin and core regions of injection molded specimen was observed using scanning electron microscopy, which shows great changes due to the incorporation of CaCO _3. With the addition of CaCO _3 (25 phr), oriented "ginger-like" network (directly mixing) or loose elongated network (mixing PA6, PP, and MAPP with premixed PA6/CaCO _3 masterbatch) of PP phase is formed in the core region, instead of spherical dispersed PP domains for unfilled blend. The distribution of CaCO _3 in PA6 and PP phases was determined by selectively dissolving PA6 phase and thermogravimetric analysis of PP phase. A possible mechanism is proposed based on the morphology evolution process to interpret the morphological differences. The mechanical properties and heat distortion temperature of the materials were tested and correlated with the morphology formed.
机译：研究了碳酸钙（CaCO_3）和配合顺序对马来酸酐接枝聚丙烯（MAPP）增容的聚酰胺6（PA6）/聚丙烯（PP）共混物的相形态的影响。使用扫描电子显微镜观察注塑样品的皮下和核心区域的形貌，这表明由于掺入了CaCO 3，其变化很大。加入CaCO _3（25 phr），在芯层中形成定向的“姜状”网络（直接混合）或疏松的细长网络（将PA6，PP和MAPP与预混合的PA6 / CaCO _3母料混合）区域，而不是球形分散的PP域，用于未填充的共混物。通过选择性溶解PA6相和PP相的热重分析，确定了CaCO_3在PA6和PP相中的分布。提出了一种基于形态演化过程解释形态差异的可能机制。测试了材料的机械性能和热变形温度，并将其与形成的形态相关联。

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