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Tracking the Progression of Dispersion of Graphite Nanoplates in a Polypropylene Matrix by Melt Mixing

机译：通过熔融混合跟踪石墨纳米板分散型石墨纳米板分散的进展

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摘要

This work reports the dispersion of graphite nanoplates (GnP) in polypropylene by melt mixing using a small-scale continuous prototype mixer. The focus is to study the progression of the dispersion of GnP, a process that is not well understood. Composites were prepared with 2 and 4 wt% of GnP, as-produced and functionalized by grafting polypropylene modified with maleic anhydride to the GnP surface. The processability of the composites was similar to that of polypropylene, as assessed by capillary rheometry. The nanoparticle dispersion was analyzed by optical microscopy. The progression of the number of agglomerates and their size, for pristine and functionalized nanoparticles, was observed along the mixer. The final agglomerate dimensions were found to be similar for pristine and functionalized GnP, and indicated that agglomerate dispersion progressed toward individual nanoparticles. The interface improvement of functionalized GnP with polypropylene was observed by scanning electron microscopy. (C) 2015 Society of Plastics Engineers
机译：通过使用小规模连续的原型混合器，通过熔融混合报告石墨纳米板（GNP）在聚丙烯中的分散。重点是研究GNP分散的进展，一种不太了解的过程。用2和4wt％的GNP制备复合材料，通过将聚丙烯用马来酸酐与GNP表面进行接枝聚丙烯而制备和官能化。复合材料的可加工性与聚丙烯的加工性类似，如毛细管流变学评估的那样。通过光学显微镜分析纳米颗粒分散体。沿着混合器观察到丙烯酸盐的次数及其尺寸的尺寸的进展。发现最终的凝聚尺寸与原始和官能化的GNP相似，并表明聚集分散朝向单独的纳米颗粒。通过扫描电子显微镜观察官能化GNP与聚丙烯的界面改善。 （c）2015年塑料工程师协会

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  • 来源
    《Polymer Composites》 |2017年第5期|共8页
  • 作者

    Cunha Eunice; Paiva Maria C.; Hilliou Loic; Covas Jose A.;

  • 作者单位

    Univ Minho Inst Polymers &

    Composites I3N Campus Azurem P-4800058 Guimaraes Portugal;

    Univ Minho Inst Polymers &

    Composites I3N Campus Azurem P-4800058 Guimaraes Portugal;

    Univ Minho Inst Polymers &

    Composites I3N Campus Azurem P-4800058 Guimaraes Portugal;

    Univ Minho Inst Polymers &

    Composites I3N Campus Azurem P-4800058 Guimaraes Portugal;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 增强塑料、填充塑料;
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