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首页> 外文期刊>Journal of Materials Engineering and Performance >Preparation and Characterization of Carbon Microfiber Through Shear Pulverization Using Pan-Mill Equipment
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Preparation and Characterization of Carbon Microfiber Through Shear Pulverization Using Pan-Mill Equipment

机译：潘米尔设备的剪切粉碎法制备碳微纤维及其表征

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摘要

Carbon microfiber was prepared through shear pulverization using the self-designed pan-mill type equipment at ambient temperature from short carbon fiber (CF). The effects of shear stress on structure transformations, particles size, microfiber morphology, surface functional groups and crystalline properties during pulverization were studied by laser diffraction particle size analyzer, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), x-ray photoelectron spectroscopy (XPS) and wide-angle x-ray diffraction (WAXD), respectively. SEM analysis indicated that CF was milled into microfiber due to the strong shear and squeezing force. The average particle size of carbon microfiber was reduced to 12.7 μm and specific surface area was increased to 0.6 m~2/g after 40 milling cycles. FT-IR and XPS analyses showed that the oxygen-containing groups increased after shear pulverization, and WAXD results illustrated that shear stress offered by mill discs had an obvious damage on the crystal structure of CF, leading to a decrease of crystallinity. Thermal analysis showed that carbon microfiber exhibited good thermal stability. The pan-milling shear pulverization technique is an environment-friendly and efficient method for preparing carbon microfiber.
机译：碳微纤维是在室温下使用自行设计的潘-米尔型设备，通过剪切粉碎由短碳纤维（CF）制成的。通过激光衍射粒度分析仪，扫描电子显微镜（SEM），傅立叶变换红外光谱（FT-IR），x研究了切应力对粉碎过程中结构转变，粒度，微纤维形态，表面官能团和结晶性质的影响。射线光电子能谱（XPS）和广角x射线衍射（WAXD）。 SEM分析表明，由于强的剪切力和挤压力，CF被磨成超细纤维。碳微纤维的平均粒度在经过40个研磨循环后降低到12.7μm，比表面积增加到0.6 m〜2 / g。 FT-IR和XPS分析表明，剪切粉碎后含氧基团增加，而WAXD结果表明，磨盘提供的剪切应力对CF的晶体结构有明显的破坏，导致结晶度降低。热分析表明，碳微纤维表现出良好的热稳定性。盘磨剪切粉碎技术是一种环保，高效的制备碳微纤维的方法。

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