聚丙烯／碳酸钙复合材料中β晶型聚丙烯的生成及其作用  

Birth and Effect of β Crystal Form Polypropylene in PP/Calcium Carbonate Composites

作　　者：窦强[1] 

机构地区：[1]南京工业大学材料科学与工程学院高分子系,江苏南京210009

出　　处：《中国塑料》2006年第1期6-11,共6页China Plastics

摘　　要：综述了在聚丙烯/碳酸钙复合材料中影响β晶型聚丙烯生成的因素、β晶型聚丙烯的生成机理以及β晶型聚丙烯对复合材料性能的影响。碳酸钙的表面处理、碳酸钙的粒径与形状、碳酸钙的用量、加工设备剪切混炼效果是影响β晶型聚丙烯生成和含量的主要因素。碳酸钙与聚丙烯中杂质等形成的复合物、合适的结晶温度和高剪切力加工设备均会诱发聚丙烯/碳酸钙复合材料中β晶型聚丙烯的生成。β晶型聚丙烯的生成大幅度地提高了复合材料的韧性。The factors which influence the production of β crystal form in polypropylene/calcium carbonate composites, the production mechanism of β crystal form polypropylene and its influence on the properties of the composites were reviewed. It was found that the surface treatment, the particle size and shape and the amount of calcium carbonate, and the shearing effect of processing machine are the main factors that influence the generation and content of β crystal form PP. β crystal form PP might be induced by the complex of calcium carbonate with impurities in PP, appropriate crystallization temperature and high shear processing machine, respectively. The toughness of the composite was improved greatly by the occurrence of β crystal form PP.

关 键 词：聚丙烯/碳酸钙复合材料 Β晶型聚丙烯 增韧 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]