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首页> 外文期刊>Journal of Applied Polymer Science >Phase morphology evolution and thermally conductive networks of immiscible polymer blends
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Phase morphology evolution and thermally conductive networks of immiscible polymer blends

机译：不混溶聚合物共混物的相位形态演化与导热网络

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摘要

The selective distribution of fillers in multi-phase polymer blends was dramatically studied to deal with thermal management fields issues. Concerning thermodynamic and kinetic effects of fillers on immiscible polymer blends, the compatibilization of fillers on phase morphology evolution and final construction of thermal conductive pathways were rarely discussed. In this work, BN fillers and polar dispersed phase were introduced into PE through various processing methods. The result showed that filler-coated shell was formed around the larger-sized dispersed phase, thereby forming more thermal conductivity network with other fillers in the two-step processing composites. When the BN content was 20 phr, the thermal conductivity was 0.8271 W/(m center dot K) for PE/PA6/BN-two steps composites, which was 95.48% higher than that of PE/PA6 composites. From the perspective of the regulation of the morphological structure of the dispersed phase, this study can provide methods and basic data for improving the thermal conductivity of incompatible polymer blends.
机译：为了解决热管理领域的问题，研究了多相聚合物共混物中填料的选择性分布。关于填料对不相容聚合物共混物的热力学和动力学影响，很少讨论填料的增容作用对相形态演变和导热路径最终构建的影响。本研究通过各种加工方法将BN填料和极性分散相引入PE中。结果表明，在两步成型复合材料中，填料包覆层围绕较大尺寸的分散相形成，从而与其他填料形成更多的导热网络。当BN含量为20份时，PE/PA6/BN两步法复合材料的导热系数为0.8271 W/（m中心点K），比PE/PA6复合材料的导热系数高95.48%。从调控分散相形态结构的角度出发，本研究可为改善不相容聚合物共混物的导热性能提供方法和基础数据。

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