Simple carbon fiber graphitization device for in-situ measurement of small angle X-ray scattering (SAXS)

被引：6

作者：

Xiao, Peng ^{[1
]}

Li, Dongfeng ^{[2
]}

Gong, Yanjun ^{[1
]}

Zhang, Shujiao ^{[2
]}

Mo, Guang ^{[3
]}

Li, Zhihong ^{[3
]}

机构：

[1] China Univ Petr, State Key Lab Heavy Oil Proc, Key Lab Catalysis CNPC, Fuxue Rd, Beijing, Peoples R China

[2] Xingtai Univ, Coll Chem & Chem Engn, Qiaodong Dist, Xingtai, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing, Peoples R China

来源：

INSTRUMENTATION SCIENCE & TECHNOLOGY | 2021年 / 49卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Carbon fibers; direct electric heating; graphitization device; small angle X-ray scattering (SAXS); synchrotron radiation; HIGH-TEMPERATURE; MICROSTRUCTURE; CARBONIZATION; EVOLUTION; COAL;

D O I：

10.1080/10739149.2020.1772818

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A small and simple device for the in-situ small angle X-ray scattering (SAXS) measurement of carbon fibers graphitization by direct electrical heating was developed. The graphitization process of polyacrylonitrile-based T700 carbon fibers from 1450 degrees C to 2100 degrees C with this device was followed in-situ by synchrotron radiation SAXS. The results show that there are needle-shaped voids oriented preferentially along the fibers axis with a surface fractal structure during graphitization of carbon fibers. The change in the fractal dimension as a function of temperature includes a dip with a minimum value at approximately 1700 degrees C. This short contribution briefly describes the device and analyzes the obtained experimental results.

引用

页码：21 / 31

页数：11

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