界面作用对HDPE/POEg/CaCO_3三元复合材料韧性的影响  

EFFECT OF INTERFACIAL INTERACTION ON THE TOUGHNESS OF HDPE/POEg/CaCO_3 TERNARY COMPOSITES

作　　者：解廷秀 刘宏治[2] 欧玉春[2] 杨桂生[1] 

机构地区：[1]上海杰事杰新材料股份有限公司研发中心,上海201109 [2]中国科学院化学研究所高分子科学与材料联合实验室,北京100080

出　　处：《高分子学报》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)

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.

关 键 词：协同增韧作用 核-壳结构 界面粘结 聚烯烃 

分 类 号：TQ334[化学工程—橡胶工业]