聚丙烯／聚烯烃弹性体共混体系的结构-性能关联

Structure-property Correlations of Isotactic Polypropylene/Polyolefin Elastomer Blends

聚丙烯是目前应用最广泛的通用塑料之一。为了克服聚丙烯脆性大的弱点,人们发展了多种方法来增韧聚丙烯,其中聚丙烯和聚烯烃弹性体共混是常用的改性聚丙烯的方法。本文介绍了聚丙烯/聚烯烃弹性体共混物相容性的研究方法和较为普遍接受的增韧理论,并对近年来国内外聚烯烃弹性体增韧聚丙烯的研究进展做了介绍。

Isotactic polypropylene is among one of the most applied general plastics. To overcome its shortcoming of brittleness, many methods were developed to modify the toughness of iPP, in which compounding with polyolefin elastomers is a commonly used method. In the present paper, characterization method on the miscibility of polymer blends and several well-established toughening theories were introduced,as well as the advance in polyolefin elastomer modifying iPP in recent years.