| 静电纺定向排列微/纳米纤维束的湿热牵伸 |
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| 引用本文： | 刘呈坤,孙润军,陈美玉,张昭环.静电纺定向排列微/纳米纤维束的湿热牵伸[J].高分子材料科学与工程,2011(12):94-97. |
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| 作者姓名： | 刘呈坤 孙润军 陈美玉 张昭环 |
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| 作者单位： | 西安工程大学纺织与材料学院;西安交通大学材料科学与工程学院 |
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| 基金项目： | 陕西省重点学科专项建设资金 |
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| 摘 要： | 静电纺射流在溶液浓度相对较大的情况下鞭动不稳定性较小,而且会以电势梯度最大方向为轴发生高速旋转,基于该基本原理,借助于常规平面铝板作为接收装置,获得了高度定向排列的微/纳米纤维集合体。为了将该定向排列微/纳米纤维束作为原丝通过预氧化和炭化处理制备微/纳米炭纤维,研究了湿热牵伸处理对定向排列微/纳米纤维结晶度和力学性能的...
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| 关 键 词： | 静电纺丝 聚丙烯腈 定向纤维 湿热牵伸 结晶度 力学性能 |
Damp-Heat Drafting for the Electrospun Aligned Micro-Nano Fiberous Bundle |
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| Chengkun Liu,Runjun Sun,Meiyu Chen,Zhaohuan Zhang.Damp-Heat Drafting for the Electrospun Aligned Micro-Nano Fiberous Bundle[J].Polymer Materials Science & Engineering,2011(12):94-97. |
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| Authors: | Chengkun Liu Runjun Sun Meiyu Chen Zhaohuan Zhang |
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| Affiliation: | 1(1.School of Textile and Materials,Xi’an Polytechnic University, Xi’an 710048,China;2.School of Materials Science and Engineering,Xi’an Jiaotong University,Xi’an 710049,China) |
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| Abstract: | Our existing research showed that the electrospinning jet with a minor whipping instability for the solution with a relatively large concentration could rotate with a high speed around the direction of the maximum electric force gradient.Based on the principle,a conventional plane aluminum plate was successfully used as the collecting device to obtain highly-aligned micro-nano fiber assembly.For the purpose of its subsequent application in carbon micro-nano fibers through pre-oxidization and carbonization,this paper carried on a research on the influence of damp-heat drafting on crystallity and mechanical properties of deposited aligned fibers.Results show that aligned fibrous bundle obtained by using a plane aluminum plate as the collecting device has a low crystallity(22.66%) and strength((0.58±0.014) cN/dtex).However,after a fourfold damp-heat drafting,these values show a significant increase and are up to 45.90% and(3.02±0.014) cN/dtex,respectively. |
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| Keywords: | electrospinning poly(acrylonitrile) aligned fibers damp-heat drafting crystallity mechanical properties |
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