Strong electrospun nanometer-diameter polyacrylonitrile carbon fiber yarns
Strong electrospun nanometer-diameter polyacrylonitrile carbon fiber yarns
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DOI：
10.1016/j.carbon.2009.06.027
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发表时间：
2009-10-01
期刊：
影响因子：
10.9
通讯作者：
Farris, Richard J.
中科院分区：
文献类型：
--
作者：
Moon, SungCheal;Farris, Richard J.
对具有不同取向度的纳米直径PAN静电纺丝进行了稳定化和拉伸，并对其性能进行了评价。在生产过程中改变的参数包括拉伸比，温度，加热速率和时间，以确定理想的氧化和碳化条件。在16 W和9.8 m/s（-1）卷绕速度下制成的10%PAN碳纱线具有约1 GPa的最高极限强度，同时在工艺期间保持恒定长度条件。用粘合剂浸渍纱线以制备纳米尺寸的单向复合材料样品后，极限强度增加到约1.7 GPa。随着卷绕速度的增加，PAN纱线的极限强度普遍增加，这是由于分子取向的增加。(C)2009爱思唯尔有限公司保留所有权利。
Nanometer-diameter electrospun PAN yarns with different degrees of alignment were stabilized and carbonized and their properties evaluated. The parameters varied during production included draw ratio, temperature, heating rate and time in order to determine the ideal oxidation and carbonization conditions. The 10% PAN carbon yarn made at 16 W and 9.8 m s(-1) take-up velocity had the highest ultimate strength of approximately 1 GPa while maintaining constant length conditions during the process. The ultimate strength increased to approximately 1.7 GPa after the yarns were impregnated with an adhesive to make nano-sized unidirectional composite samples. The ultimate strength of PAN yarns generally increased with increasing take-up velocity because of the increase of molecular orientation. (C) 2009 Elsevier Ltd. All rights reserved.