炭化条件对炭纤维纳米微孔分形维数的影响

炭化条件对炭纤维纳米微孔分形维数的影响

高忠民¹, 徐跃², 黄科科¹, 李向山¹

1. 吉林大学无机合成与制备化学国家重点实验室, 长春 130012； 2. 吉林大学测试科学试验中心, 长春 130023

收稿日期:2004-02-20 修回日期:1900-01-01 出版日期:2005-01-26 发布日期:2005-01-20
通讯作者: 高忠民

Influence of Carbonification Condition on Carbon Fiber Nanometer Micropore Fractal Dimension

GAO Zhong-min¹, XU Yue², HUANG Ke-ke¹, LI Xiang-shan¹

1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China; 2. Test Science Experiment Center, Jilin University, Changchun 130023, China

Received:2004-02-20 Revised:1900-01-01 Online:2005-01-26 Published:2005-01-20
Contact: GAO Zhong-min

摘要/Abstract

摘要： 应用X射线小角散射方法研究了炭纤维纳米微孔内表面特征的分形维数D. 结果表明, 不同炭化温度下得到的炭纤维, 其微孔尺寸在1.60～4.13 nm. 随着炭化温度的升高（由900 ℃升至2 400 ℃）, D值增大（由2.09增加到2.59）. 当增大炭化牵伸率时, 微孔分形维数也有所增加. 从具有不同分形维数炭纤维力学强度的测试中发现, 分形维数较低的试样, 具有较高的拉伸强度和压缩强度.

关键词: X射线小角散射, 炭纤维, 纳米微孔, 分形维数, 力学强度

Abstract: By means of small angle X-ray scattering, the fractal dimension D for carbonfiber nanometer micropore inner surface is studied. The results show that the size of the carbon-fibers obtained at different carbonification temperatures varies from 1.6 nm to 4.13 nm. And as the carbonification temperature goes up from 900 ℃ to 2 400 ℃, the value of D also goes up from 2.09 to 2.59. When the carbonification draft ratio is enlarged, the micropore fractal dimension will increase somewhat. By determining the mechanical intensity of the carbon-fibers which have different fractal dimension, it was found that those samples which have lower fractal dimension possess larger stretch intensity and condensation intensity.

Key words: small angle X-ray scattering, carbon-fiber, nanometre micropore, fractal dimension, mechanical intensity

中图分类号:

TQ342.742

高忠民, 徐跃, 黄科科, 李向山. 炭化条件对炭纤维纳米微孔分形维数的影响[J]. J4, 2005, 43(01): 91-94.

GAO Zhong-min, XU Yue, HUANG Ke-ke, LI Xiang-shan. Influence of Carbonification Condition on Carbon Fiber Nanometer Micropore Fractal Dimension[J]. J4, 2005, 43(01): 91-94.

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