α成核剂对聚丙烯结晶、透光率与力学性能的影响  

Effect of α Nucleating Agent on Crystallization,Light Transmittance Rate and Mechanical Property of Polypropylene

作　　者：王正有[1] 王苓[1] 周红波[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《塑料科技》2011年第2期90-93,共4页Plastics Science and Technology

基　　金：四川省教育厅科研重点项目(07ZA106)

摘　　要：用偏光显微镜对聚丙(烯PP)结晶形态及球晶尺寸进行了表征,并通过差示扫描量热(法DSC)分析了PP熔融及结晶过程的结晶度、熔融峰值、结晶峰值、结晶峰宽度。结果表明:随α成核剂用量的增加,PP的透光率、拉伸强度及弹性模量增强,冲击强度和断裂伸长率下降。The crystal morphology and spherulite size of PP were characterized by PLM.The crystallinity,melting peak temperature,crystallization peak temperature and the width of crystallization peak were analyzed by DSC.The results show that with the increase of α nucleating agent content,the light transmittance rate,tensile strenght and elastic modulus of PP increase,while the impact strength and elongation at break of PP decrease.

关 键 词：聚丙烯 α成核剂 透光率 力学性能 结晶度 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]