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Alternative Titlecarbonization of pre-oxidized polyacrylonitrile fibers
温月芳; 曹霞; 杨永岗; 李辉; 郭建强; 刘朗
Source Publication新型炭材料
Other AbstractThe microstructural evolution, elemental composition and gas releasing character of preoxided polyacrylonitrile (PAN) fibers during continuous carbonization were investigated by Raman spectroscopy, XRD, XPS and TG-MS. Results indicate that the sp C-C bond length, crystal size and graphitization degree increase. The increase of orientation degree and the decrease of micropore volume are the fundamental reasons for the improvement of density and tensile strength of carbon fibers. Surface and global carbon contents of pre-oxidized PAN fibers, and both low temperature and high temperature carbonized fibers indicate that the loss of non-carbon atoms during carbonization propagates from the exterior to the interior of the fibers. TG-MS indicates that gases are released mainly at low temperature in carbonization. The cross-linking of trapezoid giant molecular chains to release nitrogen takes place at a high temperature during carbonization.
KeywordPan 炭纤维 炭化 Raman光谱 Xrd Tg-ms
Indexed BySCI
Document Type期刊论文
Affiliation中国科学院炭材料重点实验室; 北京航空制造工程研究所;中国科学院山西煤炭化学研究所;中国科学院新疆理化技术研究所; 中国科学院研究生院
Recommended Citation
GB/T 7714
温月芳,曹霞,杨永岗,等. PAN预氧化纤维的炭化过程[J]. 新型炭材料,2008,23(2):121-126.
APA 温月芳,曹霞,杨永岗,李辉,郭建强,&刘朗.(2008).PAN预氧化纤维的炭化过程.新型炭材料,23(2),121-126.
MLA 温月芳,et al."PAN预氧化纤维的炭化过程".新型炭材料 23.2(2008):121-126.
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PAN预氧化纤维的炭化过程.pdf(481KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
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