赤泥/聚丙烯复合材料非等温结晶动力学研究  

Research on Nonisothermal Crystallization Kinetics for Red Mud/Polypropylene Composites

作　　者：石文建[1,2,3] 秦军[1,3] 吕晴[1] 刘江[1,3] 田瑶珠[4] 陈梦瑜[1] 

机构地区：[1]喀斯特环境与地质灾害防治教育部重点实验室贵州大学,贵州贵阳550003 [2]贵州蓝图新材料有限公司,贵州贵阳550001 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [4]贵州大学材料与冶金学院,贵州贵阳550003

出　　处：《塑料工业》2013年第S01期114-118,127,共6页China Plastics Industry

基　　金：贵州大学研究生创新项目(校研理工2012068)

摘　　要：采用DSC研究了聚丙烯（PP）及聚丙烯／赤泥复合材料的非等温结晶动力学，对所得的数据采用了Avrami方程的Jeziorny法及Mo法进行处理。结果表明：赤泥的加入提高了PP的结晶温度和结晶速率，PP的结晶活化能降低，赤泥成核活性高于改性的赤泥。在同样含量下，经钛酸酯偶联剂改性的赤泥使PP结晶温度增加，结晶活化能与赤泥／聚丙烯复合材料相比有小幅的增加。赤泥具有异相成核作用，经表面修饰的赤泥异相成核效果降低。The nonisothermal crystallization behavior and crystallization kinetics of polypropylene and red mud modified polypropylene were investigated by differential scanning calorimeter with the data described with the modified Avrami theories of Jeziorny and Mo methods. The results showed that the addition of red mud into polypropylene increased the crystallization temperature and the rate of crystallization of polypropylene, and decreased the activation energy of crystallization. The nucleation activity of red mud was more than modified red mud. Under the same conditions, red mud was modified by the titanium coupling agent, which increased the crystallization temperature, however, the activation energy of polypropylene had a slightly increased compared with that of red mud/polypropylene composites. Red mud can be used as the heterogeneous nucleating agent, the modified of red mud had no significant impaction on the heterogeneous nucleation of PP.

关 键 词：赤泥 聚丙烯 非等温结晶 结晶动力学 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]