沥青基高取向带状炭纤维的制备及表征

doi:10.3724/SP.J.1077.2011.01025

无机材料学报 ›› 2011, Vol. 26 ›› Issue (10): 1025-1030.DOI: 10.3724/SP.J.1077.2011.01025

沥青基高取向带状炭纤维的制备及表征

袁观明¹, 李轩科¹, 董志军¹, 崔正威¹, 丛野¹, 张中伟², 王俊山²

(1. 武汉科技大学化学工程与技术学院, 武汉430081; 2. 航天材料及工艺研究所, 北京100076)

收稿日期:2010-12-08 修回日期:2011-01-22 出版日期:2011-10-20 网络出版日期:2011-09-20
作者简介:袁观明(1978-), 男, 博士研究生. E-mail: yuanguanming@yahoo.com
基金资助:
国家自然科学基金重大研究计划重点项目(91016003); 武汉科技大学科学基金(2008TD06)

Preparation and Characterization of Highly Oriented Ribbon Shape Pitch-based Carbon Fibers

YUAN Guan-Ming¹, LI Xuan-Ke¹, DONG Zhi-Jun¹, CUI Zheng-Wei¹, CONG Ye¹, ZHANG Zhong-Wei², WANG Jun-Shan²

(1. College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, China; 2. Aerospace Research Institute of Materials and Processing Technology, Beijing 100076, China)

Received:2010-12-08 Revised:2011-01-22 Published:2011-10-20 Online:2011-09-20
Supported by:
Key Program of Major Research Plan of the National Natural Science Foundation of China (91016003); Science Foundation of Wuhan University of Science and Technology (2008TD06)

摘要/Abstract

摘要： 以萘系中间相沥青为原料, 通过熔融纺丝、氧化稳定化、炭化和石墨化处理制得了表面光洁平整的高取向带状纤维, 采用红外光谱仪、元素分析仪、X射线衍射仪、拉曼光谱、扫描电子显微镜和偏光显微镜对带状纤维的组成、形貌和微观结构进行了表征. 研究结果表明: 带状沥青纤维氧化稳定化过程中生成的羧基、羰基、醚等含氧官能团在随后炭化处理过程中消失; 带状沥青纤维截面的平均宽度和厚度约为1.6mm和18μm, 经炭化和石墨化处理后收缩至1.2mm和9μm; 随热处理温度的升高, 带状炭纤维(002)晶面的衍射峰逐渐变强, 其晶体尺寸逐渐变大; 与炭化处理纤维相比, 石墨化纤维晶体结构更加完整, 沿纤维主表面的取向程度更高.

关键词: 中间相沥青, 带状炭纤维, 制备, 表征

Abstract: Using a naphthalene derived mesophase pitch as starting material, high oriented ribbon-shaped carbon fibers with smooth and flat surface were prepared by melt-spinning, oxidation stabilization as well as further carbonization and graphitization processes. The composition, morphologies and microstructure of the ribbon-shaped carbon fibers treated at various conditions were characterized by elemental analyses, IR spectroscopy, XRD, Raman spectroscope, scanning electron microscope and polarized-light microscope. The results show that the carboxyl, carbonyl and ether functional groups formed during the oxidizing stabilization process are removed by subsequent carbonization treatment. The width and thickness of the ribbon-shaped fibers at the transverse section decrease from 1.6mm and 18?m of pitch fiber to 1.2mm and 9?m of graphitized carbon fibers, respectively. The relative intensity of the diffraction peak at about 2? = 26? corresponding to (002) crystal plane of hexagonal graphite increases with the heat-treatment temperature increasing. This indicates that the crystal size of graphite in this carbon fibers also increases in this process. In comparison with the carbonized fibers, the carbon fibers after graphitization treatment display more perfect crystal orientation along the main surface of ribbon-shaped carbon fibers.

Key words: mesophase pitch, ribbon-shaped carbon fiber, preparation, characterization

中图分类号:

TB332

袁观明, 李轩科, 董志军, 崔正威, 丛野, 张中伟, 王俊山. 沥青基高取向带状炭纤维的制备及表征[J]. 无机材料学报, 2011, 26(10): 1025-1030.

YUAN Guan-Ming, LI Xuan-Ke, DONG Zhi-Jun, CUI Zheng-Wei, CONG Ye, ZHANG Zhong-Wei, WANG Jun-Shan. Preparation and Characterization of Highly Oriented Ribbon Shape Pitch-based Carbon Fibers[J]. Journal of Inorganic Materials, 2011, 26(10): 1025-1030.

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沥青基高取向带状炭纤维的制备及表征

Preparation and Characterization of Highly Oriented Ribbon Shape Pitch-based Carbon Fibers

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