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首页> 外文期刊>Journal of nanoscience and nanotechnology >Polyacrylonitrile-Based Carbonized Fibers and Metal-Carbonized Fiber Nanocomposites for Thermal Transport
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Polyacrylonitrile-Based Carbonized Fibers and Metal-Carbonized Fiber Nanocomposites for Thermal Transport

机译：用于热传输的聚丙烯腈基碳化纤维和金属碳纤维纳米复合材料

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摘要

This work examines the fabrication and thermal analysis of metal-carbon composite fibers prepared via an electrospinning process. The metal-carbon composite fibers of silver, copper, gold, and nickel were prepared by electrospinning of a composite solution of polyacrylonitrile (PAN) and metal precursor followed by heat treatment in air, nitrogen to 1000℃ and in 6% H_2, respectively. Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), Energy dispersive spectroscopy (EDS) and Scanning thermal microscopy (SThM) were applied to characterize the metal-carbon fibers. TEM analysis showed a relatively uniform, contact-free distribution of the nanoparticles on the surface of the carbon fibers with size range of 3 nm-10 nm. Thermal analysis data showed an enhancement in the thermal conductivity of the nanomaterials when compared with the model PAN-based carbonized fibers. This was attributed to the incorporation of metal nanoparticles in the fiber matrix and on the surface.
机译：这项工作检查了通过静电纺丝工艺制备的金属-碳复合纤维的制造和热分析。银，铜，金和镍的金属-碳复合纤维是通过将聚丙烯腈（PAN）和金属前体的复合溶液电纺丝，然后分别在空气，氮气中分别加热到1000℃和6％H_2中来制备的。应用扫描电子显微镜（SEM），透射电子显微镜（TEM），傅立叶变换红外光谱（FTIR），能量色散光谱（EDS）和扫描热显微镜（SThM）表征金属碳纤维。 TEM分析显示纳米颗粒在尺寸范围为3nm-10nm的碳纤维表面上相对均匀，无接触地分布。热分析数据表明，与基于PAN的碳化纤维模型相比，纳米材料的导热性有所提高。这归因于在纤维基质中和在表面上掺入了金属纳米颗粒。

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