聚丙烯/三元乙丙胶/凹凸棒土三元复合体系的力学性能与亚微相态  

MORPHOLOGY AND MECHANICAL PROPERTIES OF PP/EPDM/AT COMPOSITES CONTAINING PARTICLES WITH CORE-SHELL STRUCTURE

作　　者：高翔[1] 毛立新[1] 田明[1] 张立群[1] 金日光[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《高分子材料科学与工程》2005年第4期197-200,共4页Polymer Materials Science & Engineering

基　　金："863"高技术研究项目(2002AA334050);北京市科技新星计划项目

摘　　要：通过两步法共混工艺制备了含核-壳结构特征相包容粒子的聚丙烯/三元乙丙胶/凹凸棒土三元复合材料,研究了复合材料的力学性能和亚微观相态结构,并对核-壳结构特征相包容粒子对PP的增韧机理进行了初步探讨。结果表明,AT在EPDM中疏松堆砌,形成以AT堆砌体为核、EPDM为壳的分散岛相。核-壳结构特征相包容粒子对基体具有良好的增韧和增强效果的平衡。对于m(PP)/m(EPDM)/m(AT)=100/20/5的体系,其缺口冲击强度较纯PP提高约5倍,而屈服强度和杨氏模量分别较m(PP)/m(EPDM)=100/20体系提高25%和110%。PP/EPDM/AT composites containing particles with core-shell structure were obtained via the melt-blending process, in which the materbatches of AT and EPDM was made firstly, then added to PP resin. The mechanical properties, morphology, and impact fracture surface of the three component composites were studied by the tensile tester, impact tester, TEM, SEM respectively. It shows that both high toughness and high strength can be obtained by particles in the three component systems with core-shell structure. The Izod impact strengh and tensile yield strengh of the m(PP)/m(EPDM)/m(AT)=100/20/5 composite reach (47.67) kJ/m^2 and (21.95) MPa respectively. The value of the tensile strength and Young′s modulus for three component composite is higher than the PP/EPDM composite.

关 键 词：聚丙烯 三元乙丙胶 凹凸棒土 增韧 增强 

分 类 号：O631.21[理学—高分子化学]