PE100级管材树脂等温结晶动力学  

Isothermal Crystallization Kinetics of PE100 Pipe Resin

作　　者：胡跃鑫[1] 韩向艳[1] 蔡冰[1] 李稳[2] 雷良才[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001 [2]中国石油抚顺石化公司,辽宁抚顺113008

出　　处：《工程塑料应用》2015年第11期91-94,共4页Engineering Plastics Application

摘　　要：利用差示扫描量热仪研究了PE100级管材树脂的等温结晶动力学,并讨论了分子量分布的双峰相对高度对等温结晶过程的影响。研究结果表明:随着结晶温度的升高,结晶速率下降,半结晶时间增大;样品的低峰相对高度越大,结晶速率越大,半结晶时间越小,结晶活化能越小;PE100的等温结晶过程属于三维生长的球晶。The isothermal crystallization kinetics of PE100 pipe resin was studied by differential scanning calorimeter and the influence of the bimodal relative height on isothermal crystallization process was discussed. The results show that the crystallization rate gradually reduce and half crystallization time （t1/2） gradually increase with the increasing of crystallization temperature. The t1/2 and crystallization activation energy reduce with the increasing of crystallization rate and low modal relative height of samples. The spherulite growth way of PE100 belongs to the three dimensions growth process.

关 键 词：PE100级管材树脂 等温结晶动力学 双峰相对高度 结晶速率 

分 类 号：O631.22[理学—高分子化学]