中文摘要：

采用两步法工艺,即三元乙丙橡胶(EPDM)与纳米碳酸钙(nano-CaCO3)先混炼,再与聚酰胺6(PA6)熔融挤出,制得PA6/EPDM/nano-CaCO3三元复合材料。其中nano-CaCO3分别采用三种不同表面处理剂(硅烷偶联剂A151、钛酸酯偶联剂NDZ105和硬脂酸)进行处理。通过接触角测量分析了nano-CaCO3的表面性能,并利用扫描电子显微镜(SEM)研究了三元复合材料的形态。研究结果表明,nano-CaCO3经A151、NDZ105和硬脂酸处理后,其与水的接触角分别从未经表面改性剂处理的nano-CaCO3的65.7°提高到70.9°、109.4°和117.4°。未经表面改性剂处理的nano-CaCO3与EPDM各自独立分散在PA6基体中,经A151处理的nano-CaCO3大多分散在PA6基体与EPDM的界面上,经NDZ105和硬脂酸处理的nano-CaCO3则分散在EPDM相,形成'沙袋结构'。nano-CaCO3经A151、NDZ105和硬脂酸处理后,PA6三元复合材料的冲击强度分别从采用未经表面改性剂处理的nano-CaCO3制备的三元复合材料的25 kJ/m2提高到48 kJ/m...

英文摘要：

Two step compounding route,which ethylene-propylene-diene terpolymer(EPDM) and nano calcium carbonate(nano-CaCO_3) were mixed prior to being mixed with Polyamide 6(PA6) in twin-screw extruder,was employed to prepare PA6/EPDM/nano-CaCO_3 ternary composites.Silane coupling agent A151,titanate coupling agent NDZ105,and stearic acid were used to modify the surface properties of nano-CaCO_3.The surface properties of nano-CaCO_3 and the morphology of the ternary composite were investigated by contact angle test a...