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首页> 外文期刊>Carbon: An International Journal Sponsored by the American Carbon Society >Effects of ultraviolet irradiation on stabilization of textile-grade polyacrylonitrile fibers without photo-initiator for preparing carbon fibers
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Effects of ultraviolet irradiation on stabilization of textile-grade polyacrylonitrile fibers without photo-initiator for preparing carbon fibers

机译：紫外线辐射对纺织级聚丙烯腈纤维稳定的影响，无光引发剂制备碳纤维

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摘要

The ultraviolet (UV) was irradiated on textile-grade polyacrylonitrile (PAN) fibers without photo-initiators to demonstrate the effective stabilization for preparing carbon fibers (CFs). The irradiation for as short as 20 min at 75 degrees C generated radicals in the textile-grade PAN fibers, which accelerate stabilization, resulting in significant reduction of process time. In addition, stepwise irradiations from 75 to 200 degrees C by increasing UV power, and following thermal treatments to mimic continuous stabilization for 30 min total provided CFs with tensile strength and modulus of 2.43 +/- 0.4 and 195 +/- 8.6 GPa. Considering conventional thermal stabilization for at least 60 min and 5 h with special and textile PAN fibers, respectively, the incorporation of UV irradiation into the present system could effectively advance stabilization process to shorten duration and to produce low-cost CFs based on textile-grade PAN fibers as one of cheap precursors. (C) 2018 Elsevier Ltd. All rights reserved.
机译：在没有光引发剂的纺织品级聚丙烯腈（PAN）纤维上照射紫外（UV），以证明制备碳纤维（CFS）的有效稳定化。在75℃下照射短至20分钟，在纺织级盘纤维中产生自由基，从而加速稳定化，导致过程时间显着降低。另外，通过增加UV功率，从75至200℃下逐步照射，并且在热处理以模拟连续稳定化30分钟的总共总共CFS的抗拉强度和模量为2.43 +/- 0.4和195 +/- 8.6GPa。考虑到常规的热稳定至少60分钟和5小时，分别具有特殊和纺织锅纤维，将UV辐射掺入本系统可以有效地推进稳定过程以缩短持续时间，并且基于纺织品等级生产低成本CFS泛纤维作为廉价前体之一。 （c）2018年elestvier有限公司保留所有权利。

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