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.
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.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2006年第1期53-58,共6页
Acta Polymerica Sinica
基金
国家自然科学基金重点资助项目(基金号10032010)
国家自然科学基金资助项目(基金号10272005)
关键词
协同增韧作用
核-壳结构
界面粘结
聚烯烃
Synergistically toughening effects, Core-shell structure, Interfacial adhesion, Polyolefin and the calcium
