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首页> 外文期刊>Polymer engineering and science >Preparation and Properties of Peroxide Dynamically Vulcanized Polypropyiene/Ethyiene-Propyiene-Diene Monomer/Zinc Dimethacryiate Thermoplastic Olefin
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Preparation and Properties of Peroxide Dynamically Vulcanized Polypropyiene/Ethyiene-Propyiene-Diene Monomer/Zinc Dimethacryiate Thermoplastic Olefin

机译:过氧化物动态硫化聚丙烯/乙炔-丙烯-二烯单体/二甲基丙烯酸锌热塑性烯烃的制备及性能

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摘要

Attempts were made to prepare the polypropylene (PP) /ethylene-propylene-diene monomer (EPDM) blends with zinc dimethacryiate (ZDMA) via peroxide dynamic vulcanization. PP was melt-mixed with EPDM and ZDMA at different compositions (PP/EPDM/ZDMA, i.e., 70/30/0, 70/30/3, 70/30/6, and 70/30/9, w/w/w) using an Internal mixer at 50 rpm rotor speed. The addition of ZDMA improved the rheological properties of the resulting materials in the melt state. The morphological studies revealed that the addition of ZDMA led to an improvement of size reduction and distribution uniformity for crosslinked EPDM phase. ZDMA showed a positive effect on the mechanical properties of the PP/ EPDM/ZDMA composites, particularly on the toughness and extensibility. With the incorporation of ZDMA, the izod Impact strength and the elongation of PP/ EPDM/ZDMA composites increased from 41 kJ/m~2 to 72 kJ/m~2 and 110% to 495%, respectively. The crystallization behaviors analysis Indicated that the addition of ZDMA promoted the nucleation process of PP but the crystallinity of the PP phase was decreased at the meantime.
机译:尝试通过过氧化物动态硫化制备与二甲基丙烯酸锌(ZDMA)的聚丙烯(PP)/乙烯-丙烯-二烯单体(EPDM)共混物。将PP与EPDM和ZDMA以不同的组成熔融混合(PP / EPDM / ZDMA,即70/30 / 0、70 / 30 / 3、70 / 30/6和70/30/9,w / w / w)使用内部混合器,转子转速为50 rpm。 ZDMA的添加改善了所得材料在熔融状态下的流变性。形态学研究表明,添加ZDMA可以改善交联EPDM相的尺寸减小和分布均匀性。 ZDMA对PP / EPDM / ZDMA复合材料的机械性能,特别是对韧性和延展性具有积极影响。随着ZDMA的加入,PP / EPDM / ZDMA复合材料的伊佐德冲击强度和伸长率分别从41 kJ / m〜2增加到72 kJ / m〜2和110%到495%。结晶行为分析表明,ZDMA的加入促进了PP的成核过程,但同时降低了PP相的结晶度。

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