聚乙烯树脂的连续自成核与退火热分级实验参数优化及其与逐步结晶热分级对比  

Parameters Optimization of Successive Self-nucleation / Annealing Thermal Fractionation Experiments for Polyethylene Resin and Comparison with Step Crystallization

作　　者：薛彦虎[1,2] 薄淑琴[1] 姬相玲[1] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理与化学国家重点实验,长春130022 [2]中国科学院大学,北京100049

出　　处：《高分子学报》2015年第3期326-330,共5页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号20734006,50921062)资助项目

摘　　要：以支化聚乙烯树脂为研究对象,研究连续自成核与退火热分级实验中,初始温度点(Ts)、升温降温速率、温度间隔(ΔT)和等温时间等实验参数对分级结果的影响,得到了一系列优化的实验参数或范围,为连续自成核与退火热分级方法的实际应用推广提供参考.并将连续自成核与退火(SSA)和逐步结晶(SC)两种热分级的实验结果进行了比较.A branched polyethylene resin was selected as an example to study the effects of experimental parameters of successive self-nucleation and annealing method on the results of thermal fractionation.Experimental parameters,such as the first selected self-seeding temperature（ Ts）,heating and cooling temperature rates,temperature interval（ ΔT）,and the permanence time at Ts,are studied extensively in successive self-nucleation and annealing（ SSA） thermal fractionation. A series of optimized parameters are obtained,which provide the reference for its application. In addition,the results from step crystallization（ SC）and SSA thermal fractionations are compared carefully.

关 键 词：聚乙烯 热分级 实验参数 优化 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]