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Atomic force microscopy study of vapor-grown carbon fibers: evidence of nanofiber structure

机译:气相生长碳纤维的原子力显微镜研究:纳米纤维结构的证据

摘要

Vapor-grown carbon fibers (VGCF) are a type of short carbon fibers, not yet commercially available, but with a potentially excellent cost/performance ratio owing to the simplicity of their production process. Scanning electron and atomic force microscopy studies have been performed. In each study, a similar structure was observed at the micrometer scale, the so-called 'tree-trunk' structure, consisting of concentric cylindrical layers. This atomic force microscopy study revealed the nanometer structure. The layers are composed of several nanofibers approximately 200 nm in width, each exhibiting a fine structure of nanofibers approximately 15 nm in width. This nanostructure is similar to the ex-PAN fibers and explains the acceptable level of mechanical properties obtained for VGCF.
机译:气相生长碳纤维(VGCF)是一种短碳纤维,目前尚未在市场上买到,但由于其生产过程的简单性,其潜在的性价比极高。已经进行了扫描电子和原子力显微镜研究。在每项研究中,都在微米级观察到了类似的结构,即所谓的“树干”结构,由同心的圆柱层组成。这项原子力显微镜研究揭示了纳米结构。这些层由几根约200 nm宽的纳米纤维组成,每根纳米纤维都具有约15 nm宽的纳米纤维的精细结构。该纳米结构类似于ex-PAN纤维,并说明了VGCF获得的可接受的机械性能水平。

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