聚合物共混体系中分散相在物理老化过程的尺寸变化  

Size Change of Dispersed Phase in Polymer Blends during Annealing

作　　者：邱美坚[1] 

机构地区：[1]广东省化学工业公共实验室广东省石油化工研究院,广东广州510665

出　　处：《广东化工》2008年第8期18-21,共4页Guangdong Chemical Industry

摘　　要：文章研究了退火过程对乙烯-辛烯共聚物/热塑性聚氨酯不相容共混物的相聚集现象的影响,利用扫描电子显微镜分析分散相的粒径,结果表明,随着退火温度的提高和时间的延长,分散相的粒径变大、分布变宽,聚集长大机理起关键作用。The coalescence behavior of immiscible blends of thermoplastic polyurethane （TPU） and ethylene-octylene copolymer （POE） was revealed by annealing. The blend granules were annealed in bulk and the resulting particle sizes were determined by scanning electronic microscopy （SEM）. It was tbund that the dispersed phase diameter and the broadness of the size distribution increased with increasing annealing time and temperature. The coalescence mechanism might be attributed to the process of reshaping coalescence.

关 键 词：聚集 共混物 聚氨酯 退火 

分 类 号：TQ316.6[化学工程—高聚物工业] O631.1[理学—高分子化学]