中文摘要：

通过界面改性，制备了以CaCO3为核，马来酸酐接枝乙烯，辛烯共聚物弹性体（POEg）为壳的高密度聚乙烯（HDPEg）／弹性体（POE）／CaCO3的三元复合材料．由于“核-壳”结构的形成，弹性体和CaCO3表现出协同的增韧作用．同未经表面处理的CaCO3复合材料相比，在相同的CaCO3含量的情况下，表面处理的CaCO3由于与弹性体形成更强的界面粘结，使得三元复合材料的“脆-韧”转变发生在较低的弹性体含量．

英文摘要：

High-density polyethylene/elastomer/calcium carbonate ternary composites with dispersed phase of calcium carbonate as a core and maleated elastomer （ethylene-octane copolymer） POEg as a shell were prepared through the reactive extrusion. The improvement of impact strength of HDPE/POEg was limited due to the high miscibility between them. The introduction of CaCO3 because of the poor interfacial adhesion. However, in had a negative impact on the toughness of the these ternary composites, the calcium carbonate showed synergistical toughening effects on the HDPE matrix as a resuh of the formation of core-shell HDPE matrix and elastomer structures due to the strong interaction between POEg and CaCO3, which improved the HDPE-CaCO3 interfacial strength toughness of the blends. The brittle-ductile transition occurred at lower contents of POEg for surface treated carbonate based ternary composites compared with the untreated calcium carbonate based ones.