作　　者： ; ; ;

机构地区： 东华大学材料科学与工程学院纤维材料改性国家重点实验室

出　　处： 《高分子材料科学与工程》 2003年第5期142-144,共3页

摘　　要： 用DSC方法研究了三种不同质量聚对苯二甲酸乙二醇酯(PET)切片非等温结晶动力学。结果表明,PET切片都很好遵循Avrami方程和Ziabicki方法描述冷却速率对聚合物结晶形态的影响。PET切片中增加二甘醇(DEG)含量,可降低切片结晶速率,使熔融结晶温度向低温方向移动。结晶速率小,结晶温度低的切片,不一定结晶能力小。 The kinetics of nonisothermal crystallization of PET with different quality has been investigated by DSC. The results show in the range of cooling rate of 2.5 to 20 K/min, that the kinetics of nonisothermal crystallization of PET with different quality is fitted for Avrami equation quite well. Based on Maudelkern and Eialaickt theories, the kinetic crystallizability(Gc) has been determined, Gc was cooling rate dependant. The temperatures of crystallization peak of PET move towards tower temperatures with the increase of the cooling rate. The crystallization rate decreases with DEG increasing.

关 键 词： 质量 切片 非等温结晶动力学 聚对苯二甲酸乙二醇酯 二甘醇

领　　域： [化学工程]