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材料工程  2017, Vol. 45 Issue (2): 65-71    DOI: 10.11868/j.issn.1001-4381.2015.001275
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
PAN预氧纤维径向结构的光密度法研究
钟珊, 徐帆, 雷帅, 武帅, 徐樑华
北京化工大学 碳纤维及功能高分子教育部重点实验室, 北京 100029
Optical Density Method of Radial Structure of PAN-based Pre-oxidized Fibers
ZHONG Shan, XU Fan, LEI Shuai, WU Shuai, XU Liang-hua
Key Laboratory of Carbon Fiber and Functional Polymer(Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
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摘要 针对聚丙烯腈(PAN)预氧纤维径向结构的分布特点,利用PAN预氧化结构对可见光的吸收作用,以可见光在纤维横截面上的透过率(光密度)为衡量标准,建立一种可定量表征PAN预氧化纤维径向结构的方法,即光密度法。结果表明:当测试样品厚度为400nm、光强为800lx时,光密度法表征纤维预氧化结构的径向分布特征最为准确灵敏。与传统的皮芯结构表征方法相比,该方法不仅可表示不同预氧化条件下纤维在相同区域的预氧化程度,还可获得预氧化程度在径向的分布情况。将该方法应用于PAN纤维的预氧化工艺研究,结果显示此方法可精确表达出工艺与结构的相关性,表明光密度法作为一种PAN预氧化程度表征的新方法,可在PAN预氧化径向结构研究中发挥积极的作用。
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钟珊
徐帆
雷帅
武帅
徐樑华
关键词 PAN纤维光密度法径向结构预氧化程度    
Abstract:According to the radial distribution characteristics of PAN pre-oxidized fiber, the optical density method which can quantitatively characterize the radial structure of pre-oxidized PAN fiber is established, taking advantage of the light-absorbing of PAN pre-oxidized structure. The results show that when the sample's width is 400 nm and the light intensity is 800 lx, the optical density method characterize the radial distribution characteristics of PAN pre-oxidized fibers the most effectively and accurately. Compared with the traditional skin-core structure characterization method, this method not only expresses the pre-oxidized degree in the same domain under different pre-oxidation processes, but also obtains the radial distribution of pre-oxidized degree. Applying this method to the process research of pre-oxidized PAN fiber, the results show that this method can reveal a correlation between the process and structure, indicating the optical density method as a new method for characterization of PAN pre-oxidized fiber can play an active role in the study of pre-oxidized PAN radial structure.
Key wordsPAN fiber    optical density method    radial structure    pre-oxidation
收稿日期: 2015-10-25      出版日期: 2017-02-23
中图分类号:  TQ342+.741  
通讯作者: 徐樑华(1960-),男,研究员,博士生导师,主要从事高性能聚丙烯腈基碳纤维的研究,联系地址:北京市朝阳区北京化工大学碳纤维及功能高分子教育部重点实验室(100029),xulh@mail.buct.edu.cn     E-mail: xulh@mail.buct.edu.cn
引用本文:   
钟珊, 徐帆, 雷帅, 武帅, 徐樑华. PAN预氧纤维径向结构的光密度法研究[J]. 材料工程, 2017, 45(2): 65-71.
ZHONG Shan, XU Fan, LEI Shuai, WU Shuai, XU Liang-hua. Optical Density Method of Radial Structure of PAN-based Pre-oxidized Fibers. Journal of Materials Engineering, 2017, 45(2): 65-71.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.001275      或      http://jme.biam.ac.cn/CN/Y2017/V45/I2/65
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