β晶型成核剂增韧聚丙烯研究  

STUDY ON PP TOUGHENED WITH β CRYSTALLINE NUCLEATING AGENT

作　　者：钱欣[1] 程蓉[1] 

机构地区：[1]浙江工业大学化工学院,杭州310014

出　　处：《工程塑料应用》2002年第12期15-17,共3页Engineering Plastics Application

基　　金：浙江省科技厅重点资助项目(01110619)

摘　　要：研究了取代苯酰胺类的新型β成核剂对聚丙烯力学性能的影响,并采用偏光显微镜、差示扫描量热法和广角X衍射对β成核PP的结晶形态进行了详细的表征。结果表明,加入β成核剂后,由于具有独特柬状结构β晶型的生成,PP的刚性略有下降,但韧性却得到了很大的提高。当成核剂用量为0.6％时,β晶型相对含量最高,悬臂梁缺口冲击强度达到最大值91.3 J/m,约为纯PP的4倍。The influence of new β nucleating agent ( aniline compound) on the mechanical properties of polypropylene was studied. The crystallization behavior of β nucleated PP was investigated by polarized optical microscopy (POM) , differential scanning calorimetry (DSC) and wide angle X-ray diffraction (WAXD). The results showed that as the formation of β crystalline with sheaf-like structure by adding β nucleating agent, the rigidity of nucleated PP was decreased slightly, but the toughness was improved greatly. When 0. 6% β nucleating agent was added, the relative β crystalline fraction was the highest, so the Izod notched impact strength a-chieved the highest value of 91.3 J/m, which was about four times that of pure PP.

关 键 词：Β晶型 成核剂 增韧 聚丙烯 研究 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ3