中山大学学报（自然科学版）Issue(5)：62-66,5.DOI:10.13471/j.cnki.acta.snus.2015.05.013
无规共聚聚丙烯中β－晶的增韧作用
Toughening of Polypropylene Random Copolymer by β-Modification
摘要
Abstract
In order to improve the impact strength of polypropylene random copolymer (PPR),the calci-um pimelate nucleated PPR,nano-CaCO3 and calcium pimelate-supported CaCO3 filled PPR were pre-pared.Their mechanical properties,crystallization behavior and the content of β-modification were stud-ied using mechanical testing,differential scanning calorimetry,wide-angle X-ray diffraction and scanning electron microscopy.The effect of calcium pimelate,nano-CaCO3 and calcium pimelate-supported CaCO3 on the impact strength,elongation at break,crystallization temperature and β-modification contents of PPR were investigated.The result indicated that using supported β-nucleating agent was an efficient method to increase the β-modification contents and improve the toughness of PPR.关键词
β-成核无规共聚聚丙烯/力学性能/结晶与熔融Key words
β-modification polypropylene random copolymer/mechanical properties/crystallization and melting分类
化学化工引用本文复制引用
李美,章自寿,谭韵红,戴欣,李谷,麦堪成..无规共聚聚丙烯中β－晶的增韧作用[J].中山大学学报（自然科学版）,2015,(5):62-66,5.基金项目
国家自然科学基金资助项目（51173208，51373202）；广东省自然科学基金资助项目（S2011020001212）；广东省自然科学博士启动基金资助项目 （）
