超临界二氧化碳作用下含β成核剂等规聚丙烯的结晶行为

高分子材料科学与工程, 2014, 30(10): 82-85.

超临界二氧化碳作用下含β成核剂等规聚丙烯的结晶行为

王丽文 ^1, , 包锦标 ^2, , 刘智峰 ^3, , 陈忠仁 ^4,

1.宁波大学材料科学与化学工程学院,浙江宁波315211

2.宁波大学材料科学与化学工程学院,浙江宁波315211

3.宁波大学材料科学与化学工程学院,浙江宁波315211

4.宁波大学材料科学与化学工程学院,浙江宁波315211

基金项目: 宁波大学王宽诚幸福基金宁波市自然科学基金资助项目(2013A610019) 浙江省教育厅科研项目(Y201327472)

关键词：等规聚丙烯 , 二氧化碳 , β成核剂 , 结晶

Influence of Supercritical Carbon Dioxide on Crystallization Behavior of Isotactic Polypropylene with β-Nucleating Agent

Keywords： iPP , CO2 , β nucleation agent , crystallization

研究了含有β成核剂等规聚丙烯在CO2环境中的结晶行为.分别使用X射线衍射仪、差示扫描量热仪及红外光谱仪研究了样品中的β晶含量和β晶的热稳定性.结果表明,相对于常压N2环境,在CO2环境中生成的β晶在升温熔融过程中没有发现β-α重结晶现象,这意味着CO2环境中生成的β晶更稳定.而随着CO2环境中降温速率增大,结晶过程不完善,生成的β晶不稳定,升温熔融过程中逐渐发生了β-α重结晶现象.

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材料期刊网

超临界二氧化碳作用下含β成核剂等规聚丙烯的结晶行为

Influence of Supercritical Carbon Dioxide on Crystallization Behavior of Isotactic Polypropylene with β-Nucleating Agent

参考文献