纳米碳酸钙增韧增强聚丙烯的研究  

THE RESEARCH OF PP TOUGHENED AND REINFORCED WITH NANO-CaCO_3

作　　者：吴建国[1] 杨晓华[1] 郭峰[1] 张耘[1] 任显诚[2] 王贵恒[2] 白兰英[2] 

机构地区：[1]扬子石油化工股份有限公司研究院,南京210048 [2]四川大学高分子材料科学与工程系,成都610065

出　　处：《现代塑料加工应用》2003年第2期1-4,共4页Modern Plastics Processing and Applications

摘　　要：研究了聚丙烯 /纳米碳酸钙复合材料的综合力学性能 ,用Ceast仪器化冲击试验机对复合材料冲击过程的力 -时间、能量 -时间关系曲线分析表明 ,冲击裂纹开裂应力和开裂能都远高于橡胶或弹性体增韧聚丙烯体系 ,证明该复合材料是一类“强而韧”的材料 ;用扫描电镜观察复合材料缺口冲击样条断面发现 ,复合材料的断裂方式由耗能少的空洞化 -银纹断裂方式逐步向耗能多的基体屈服方式转化 ,从而达到材料的增韧。The mechanical properties of the polypropylene(PP)/nano CaCO 3 composites were studied. The analysis on the curves of force time and energy time by Ceast revealed that the impacting stress and energy of the composites are higher than that of PP touphened with or elastermer, which proved that the composite is strong and toughen.The SEM photographs of the transact of the samples at break showed that the rupture of the samples changed from the cavitation and crazing to yielding,thus the composite was toughened.

关 键 词：纳米碳酸钙 增韧 增强 聚丙烯 研究 

分 类 号：TQ327[化学工程—合成树脂塑料工业]