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首页> 外文期刊>Polymers for advanced technologies >Morphology and conduction properties of graphite-filled immiscible PVDF/PPgMA blends
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Morphology and conduction properties of graphite-filled immiscible PVDF/PPgMA blends

机译：石墨填充不混溶的PVDF / PPgMA共混物的形貌和导电性能

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摘要

Graphite was dispersed in immiscible polyvinylidene fluoride/maleated polypropylene (PVDF/PPgMA) blends to improve electrical and thermal conductive properties by building a double-percolation structure. The morphology of PVDF/PPgMA blends was first investigated for several compositions by selective solvent extraction, scanning electron microscopy, and dynamic mechanical thermal analysis. Blends of PVDF and PPgMA were prepared in different relative fractions, and a PVDF/PPgMA ratio of 7/3 showed a well-co-continuous structure. From this blend, the morphology and properties of composites with different concentrations of graphite were investigated to prepare double-percolated structures. Graphite was observed to selectively localize in the PPgMA phase. The electrical and thermal conductive properties of graphite-containing blends were measured, showing enhanced conductivity for the double-percolation structures compared with single-polymer composites containing the same graphite loadings.
机译：将石墨分散在不混溶的聚偏二氟乙烯/马来酸化聚丙烯（PVDF / PPgMA）混合物中，以通过建立双重渗滤结构来改善导电和导热性能。首先通过选择性溶剂萃取，扫描电子显微镜和动态机械热分析研究了几种成分的PVDF / PPgMA共混物的形态。以不同的相对比例制备了PVDF和PPgMA的共混物，PVDF / PPgMA的比例为7/3，显示出良好的共连续结构。从这种共混物中，研究了具有不同石墨浓度的复合材料的形貌和性能，以制备双渗透结构。观察到石墨选择性地定位在PPgMA相中。测量了含石墨的共混物的导电性能和导热性能，与含相同石墨含量的单聚合物复合材料相比，双渗透结构的导电性得到了提高。

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