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Melt Rheological Properties of Polypropylene-Maleated Polypropylene Blends.II.Dynamic Viscoelastic Properties

机译:聚丙烯-马来酸化聚丙烯共混物的熔体流变性能.II。动态粘弹性

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The dynamic viscoelastic properties of polypropylene (PP)-maleated PP blends in the molten state have been investigated with a dynamic mechanical thermal analyzer (PL-DMTA MKII) at a frequency range (#omega#) of 0.6 * 10 10~(-1)-3.14 * 10~2 rad s~(-1).In the study,the blends were prepared by melt-blending in a twin-screw extruder,using homopolypropylene and an ethylene-propylene copolymer as a matrix,respectively,and PP grafted with maleic anhydride (PP-g-MA) as a second component.It has been found that the data of the blends do not obey the Cox-Merz rule;the polts of log G'-log G" for the both blends show a compositionn dependence.It is due to the fact that the two kinds of PP are immiscible with PP-g-MA.
机译:使用动态机械热分析仪(PL-DMTA MKII)在0.6 * 10 10〜(-1)的频率范围内研究了聚丙烯(PP)-马来酸PP共混物在熔融状态下的动态粘弹性能。 )-3.14 * 10〜2 rad s〜(-1)。在本研究中,共混物是在双螺杆挤出机中以均聚丙烯和乙烯-丙烯共聚物为基质,通过熔融共混制备的接枝了顺丁烯二酸酐(PP-g-MA)作为第二种成分。已发现混合物的数据不符合Cox-Merz规则;两种混合物的log G'-log G“点均显示这是由于两种PP与PP-g-MA不相容。

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