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首页> 外文期刊>Journal of materials science >Novel aramid paper-based materials with enhanced thermal conductivity via ZnO nanowire decoration on aramid fibers
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Novel aramid paper-based materials with enhanced thermal conductivity via ZnO nanowire decoration on aramid fibers

机译：通过芳纶纤维上的ZnO纳米线装饰提高导热性的新型芳纶纸基材料

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摘要

The synthesis of ZnO nanowires (NWs) on aramid fiber (AF) surface via a facile in situ hydrothermal method was studied and the as-obtained AFs@ZnO NWs acting as the thermal conductive fiber fillers in the fabrication of aramid paper-based materials by wet-forming process were also investigated. SEM showed a dense and uniform ZnO NWs layer with vertical alignment was well established on surface of AFs. EDS and XRD characterization further confirmed the formation of ZnO NWs on AFs surface. Compared with the pristine paper, the composite paper exhibited better thermal conductivity increased by 129% from 0.0867 to 0.1985 W/m K and kept good insulating properties inherent to aramid paper. The excellent thermal conductivity of aramid paper was mainly attributed to the effective heat conduction networks formed by the AFs@ZnO NWs within the aramid paper. This study proposed an innovative way to fabricate fibrous thermally conductive filler, which effectively improved the dispersion, retention of fillers and interfacial bonding between fillers and fibers.
机译：研究了一种简便的原位水热法在芳纶纤维（AF）表面合成ZnO纳米线（NWs）的方法，并以此为基础，在芳纶纸基材料的制备中，将AFs @ ZnO NW用作导热纤维填料。还研究了湿法成型工艺。扫描电镜显示出在AF表面上很好地建立了垂直取向的致密均匀的ZnO NWs层。 EDS和XRD表征进一步证实了在AF表面上形成了ZnO NW。与原始纸相比，该复合纸显示出更好的导热率，从0.0867到0.1985 W / m K增加了129％，并保持了芳纶纸固有的良好绝缘性能。芳纶纸出色的导热性主要归因于芳纶纸内AFs @ ZnO NWs形成的有效导热网络。这项研究提出了一种创新的制造纤维状导热填料的方法，该方法有效地改善了填料的分散性，保持力以及填料与纤维之间的界面粘结。

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