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Thermal and mechanical properties for binary blends of metallocene polyethylene with conventional polyolefins

机译：茂金属聚乙烯与常规聚烯烃的二元共混物的热和机械性能

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The thermal and mechanical properties for four binary blends, high-density polyethylene (HDPE)-metallocene polyethylene (MCPE), polypropylene (PP)-MCPE, poly(propylene-co-ethylene) (CoPP) -MCPE, and poly( propylene-co-ethylene-co-1-butene) (TerPP) -MCPE were investigated to compare the compatibility and molecular micromechanism of the blends. We report in this work all the blend systems that are thermodynamically immiscible but mechanically compatible which have been understood by their thermal and mechanical behaviors. A lower content of MCPE (up to 50%) in PP-MCPE, CoPP-MCPE, and TerPP-MCPE blends showed discernibly two beta transitions, whereas beta relaxation was shifted to a lower temperature with the MCPE content in the HDPE-MCPE system. These results conclude that the degree of compatibility in the HDPE-MCPE blend is the largest among the blend systems that we have studied, which also can be explained in terms of the similar chemical structure of polyolefins. (C) 1998 John Wiley & Sons, Inc. [References: 28]
机译：四种二元共混物的热和机械性能，高密度聚乙烯（HDPE）-茂金属聚乙烯（MCPE），聚丙烯（PP）-MCPE，聚（丙烯-共-乙烯）（CoPP）-MCPE和聚（丙烯-研究了共-乙烯-共-1-丁烯（TerPP）-MCPE，以比较共混物的相容性和分子微力学。我们在这项工作中报告了所有在热力学上不混溶但在机械上相容的共混体系，这些共混体系已被其热和机械性能所理解。 PP-MCPE，CoPP-MCPE和TerPP-MCPE共混物中较低的MCPE含量（最高50％）显示出明显的两个β转变，而随着HDPE-MCPE系统中MCPE含量的增加，β弛豫转变为较低的温度。这些结果表明，在我们研究的共混体系中，HDPE-MCPE共混物的相容性程度最大，这也可以用聚烯烃的相似化学结构来解释。 （C）1998 John Wiley＆Sons，Inc. [参考：28]

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