PE-LLD/SEBS-g-MAH/POE-g-MAH共混体系流变性能的研究

在双螺杆挤出机中用马来酸酐（MAH）分别对乙烯-辛烯共聚物（POE）、氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物（SEBS）进行熔融接枝，用密炼机对线形低密度聚乙烯（PE-LLD）、POE-g-MAH和SEBS-g-MAH进行熔融共混，用毛细管流变仪对PE-LLD/SEBS-g-MAH二元体系和PE-LLD/POE-g-MAH/SEBS-g-MAH三元体系的流变行为进行研究。结果表明，LLDPE/POE-g-MAH/SEBS-g-MAH共混体系是典型的假塑性流体；体系的表观黏度随着SEBS-g-MAH组分含量的增加而增加，POE-g-MAH对共混体系表观黏度的影响较小。

Rheological Behavior of PE-LLD/SEBS-g-MAH/POE-g-MAH Blends

POE and SEBS was melt grafted with MAH in a twin-screw extruder separately, and introduced into PE-LLD forming binary blends PE-LLD/SEBS-g-MAH and ternary blends PE-LLD/POE-g-MAH/SEBS-g-MAH in a internal mixer. The rheological property of the blends was studied using a capillary rheometer. The ternary blend was found a typical pseudo-plastic melt. The apparent viscosity increased with increasing content of SEBS-g-MAH, and the influence of POE-g-MAH on the apparent viscosity of the blends was negligible.