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中文摘要：
通过动态流变行为测试，研究了一系列丁烯共聚和己烯共聚LLDPE的储能模量、损耗模量、零切黏度和动态黏度的变化规律，并讨论了它们与分子结构的关系。研究表明：（1）两个系列的LLDPE样品所得到的动态交点Gx随着重均相对分子质量的增大，其对应的频率越低；（2）两个系列的复数黏度和重均相对分子质量的关系式不符合Raju的经验方程；（3）一定含量的长支链可以加剧剪切变稀的程度，而动态黏度在聚合物重均相对分子质量相差不大的情况下，随着分子量分布的增大而增大。
英文摘要：
The changes of storage modulus（G′） loss modulus（G″）, , zero shear viscosity and dynamic viscosity were studied by investigating the dynamic rheological behaviors of a series of butene and hexane copolymerized LLDPE with various molecular structures. The results indicate that： （1） the dynamic cross-point Gx correspond to the low frequency 02 as the Mw increasing; （2） the dependence of the complex viscosity on the weight average molecular weight does＇t follow the Raju equation and （3） the long chain branching enhances the shear-thinning behavior and the dynamic viscosity depends chiefly on the polydispersity as the weight average molecular weight are similar.
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