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首页> 外文期刊>Colloid & Polymer Science >The enhanced nucleating ability of carbon nanotube-supported β-nucleating agent in isotactic polypropylene
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The enhanced nucleating ability of carbon nanotube-supported β-nucleating agent in isotactic polypropylene

机译：碳纳米管负载的β成核剂在全同立构聚丙烯中的成核能力增强

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摘要

A kind of β-nucleating agent, calcium pimelate, for polypropylene (PP) was chemically supported onto the surface of multi-wall carbon nanotubes, and the effect of the multi-wall carbon nanotube-supported β-nucleating agent on the mechanical properties and morphology of isotactic polypropylene composites was investigated. The composites of isotactic polypropylene and multi-wall carbon nanotube-supported β-nucleating agent exhibited excellent impact toughness compared with pure isotactic polypropylene and β-nucleated isotactic polypropylene, being more than seven times over that of pure isotactic polypropylene and more than three times over that of β-nucleated isotactic polypropylene. The excellent impact behaviors of the composites were also evidenced by the fracture morphology based on scanning electron microscopy observations. Differential scanning calorimetry and wide-angle X-ray diffraction results verified the enhanced nucleating ability of the multi-wall carbon nanotube-supported β-nucleating agent, which greatly improved the impact toughness without significantly deteriorating the strength and stiffness of the polypropylene composites.
机译：一种用于聚丙烯（PP）的β-成核剂庚二酸钙化学负载在多壁碳纳米管的表面上，以及多壁碳纳米管负载的β-成核剂对机械性能和力学性能的影响。研究了全同立构聚丙烯复合材料的形貌。与纯等规聚丙烯和β-成核等规聚丙烯相比，等规聚丙烯与多壁碳纳米管负载的β-成核剂的复合材料具有优异的冲击韧性，是纯等规聚丙烯的七倍以上，是纯等规聚丙烯的三倍以上。 β-成核的等规聚丙烯。基于扫描电子显微镜观察的断裂形态也证明了复合材料的优异冲击性能。差示扫描量热法和广角X射线衍射结果证实了多壁碳纳米管负载的β成核剂的成核能力增强，其在不显着降低聚丙烯复合材料的强度和刚度的情况下大大提高了冲击韧性。

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