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Properties and effect of preparation method of thermally conductive polypropylene/aluminum oxide composite

机译:导热聚丙烯/氧化铝复合材料的制备方法及其性能

摘要

Polypropylene/aluminum oxide composite was fabricated by using two different processing methods: mechanical grinding (MG) and melt mixing (MM). Unlike traditional MM, MG after hot pressing can form a segregated structure. The method is based on sintering of a polymer composite with core–shell-like structure. Scanning electron microscopy was performed to observe the segregated structure and filler distribution. Filler was localized at the interface of the polymer matrix, resulting in the segregated structure. This localization indicates that such segregated structure can help improve the thermal conductivity of the composite. The composite prepared by MM did not possess continuous thermally conductive paths of filler because of shear mixing. Differential scanning calorimetry, thermogravimetric analysis, and rheological measurements were carried out to examine the thermal and mechanical properties of the samples obtained by each fabrication method.
机译:聚丙烯/氧化铝复合材料是通过两种不同的加工方法制造的:机械研磨(MG)和熔融混合(MM)。与传统的MM不同,MG在热压后可以形成隔离的结构。该方法基于烧结具有核壳结构的聚合物复合材料。进行扫描电子显微镜观察分离的结构和填料分布。填料位于聚合物基质的界面处,导致结构分离。这种局部化表明,这种分离的结构可以帮助提高复合材料的导热性。 MM制备的复合材料由于剪切混合而没有连续的填料导热路径。进行差示扫描量热法,热重分析和流变学测量以检查通过每种制造方法获得的样品的热和机械性能。

著录项

  • 作者

    Li B; Li R; Xie Y;

  • 作者单位
  • 年度 2017
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  • 原文格式 PDF
  • 正文语种 eng
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