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首页> 外文期刊>Journal of Applied Polymer Science >PP/PE blends. IV. Characterization and compatibilization of blends of postconsumer resin with virgin PP and HDPE
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PP/PE blends. IV. Characterization and compatibilization of blends of postconsumer resin with virgin PP and HDPE

机译：PP / PE共混物。 IV。消费后树脂与纯PP和HDPE的共混物的表征和相容性

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The mechanical properties of blends of isotactic polypropylene and high-density polyethylene with a postconsumer resin (recycled dairy containers) were investigated over the entire composition range. Modification of these blends with an ethylene/propylene/diene copolymer or an ethylene/vinyl acetate copolymer was also investigated. Isotactic polypropylene/postconsumer resin blends have satisfactory impact and tensile properties at postconsumer resin contents of less than 50% for certain applications. At higher postconsumer resin contents, the tensile properties were adversely affected. The impact properties remained satisfactory. Addition of an ethylene/propylene/diene copolymer improved the mechanical properties of these blends to levels equal to or greater than those for neat isotactic polypropylene. Ethylene/vinyl acetate copolymers were also able to improve the mechanical properties, but not as efficiently as did the ethylene/propylene/diene copolymer. Blends of high-density polyethylene and a postconsumer resin had poor impact and tensile properties. Although the ethylene/propylene/diene copolymer and ethylene/vinyl acetate copolymers were able to improve these properties, the improvement was insufficient for general recycling, except at lower (less than or equal to 25%) postconsumer resin contents. (C) 1998 John Wiley & Sons, Inc. [References: 7]
机译：在整个组成范围内研究了全同立构聚丙烯和高密度聚乙烯与消费后树脂（回收乳制品容器）的共混物的机械性能。还研究了用乙烯/丙烯/二烯共聚物或乙烯/乙酸乙烯酯共聚物对这些共混物的改性。对于某些应用，等规聚丙烯/消费后树脂共混物在消费后树脂含量小于50％时具有令人满意的冲击和拉伸性能。在较高的消费后树脂含量下，拉伸性能受到不利影响。冲击性能仍然令人满意。乙烯/丙烯/二烯共聚物的加入将这些共混物的机械性能提高到等于或大于纯等规聚丙烯的水平。乙烯/乙酸乙烯酯共聚物也能够改善机械性能，但不如乙烯/丙烯/二烯共聚物有效。高密度聚乙烯和消费后树脂的共混物的冲击和拉伸性能较差。尽管乙烯/丙烯/二烯共聚物和乙烯/乙酸乙烯酯共聚物能够改善这些性能，但该改进不足以用于一般的回收利用，除非在消费后的树脂含量较低（小于或等于25％）时。 （C）1998 John Wiley＆Sons，Inc. [参考：7]

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