摘要
利用Ram an散射及X射线衍射方法,对不同炭化温度下制备的PAN基炭纤维样品进行了测试。根据Ram an散射的测试结果,从F itzer碳键键距出发,给出了PAN基炭纤维中sp2杂化的C—C原子键距a0随炭化温度的变化规律。由各样品的X射线衍射测试结果,得到了各样品的结构参数(La、Lc、d002)。分析了sp2杂化的C—C原子键距a0随结构参数(La、Lc、d002)变化的原因。结果表明,C—C原子键距a0与石墨化程度有关,且随La、Lc的增大及d002的减小C—C原子键距增大。
PAN-based carbon fibers with different carbonization temperatures were characterized by Raman scattering and X-ray diffraction. The length of the sp^2 hybrid C--C bond was obtained on the basis of Fitzer' s C-C bond length formula. Structural parameters (La, Lc, d002 ) of graphite were obtained by X-ray diffraction measurements. The dependences of sp^2 hybrid C-C bond length with structural parameters (La, Lc, d002 ) were obtained. It was found that sp^2 hybrid C-C bond length increases with La, Lc and decreases with d002.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2005年第3期274-277,共4页
New Carbon Materials
基金
吉林省教育厅科研计划项目(2004-56)~~
关键词
PAN基炭纤维
炭化温度
键距
结构参数
PAN-based carbon fiber
Carbonization temperature
Bond length
Structural parameter