通过两步法熔融共混工艺制备了具有核壳特征凹凸棒土(AT)/聚丙烯(PP)/聚碳酸酯(PC)三元复合材料.利用TEM观察复合体系的亚微相态.使用万能材料拉力机、冲击实验仪等手段测试了复合材料的力学性能,并对三元复合体系的增韧机理进行了探讨.结果表明,PC连续相中形成了以AT为核、PP为壳的分散相.这种核-壳结构特征相包容粒子对PC具有良好的增韧效果,且强度较PP/PC二元共混体系有所提高.结合冲击断面形貌的SEM分析,认为AT/PP/PC三元复合体系中的增韧机制主要是界面脱粘、空化作用和AT对分散相的增强作用.
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