| Carbonization of pre-oxidized polyacrylonitrile fibers | |
| Wen Yue-fang1,2; Cao Xia3; Yang Yong-gang1; Li Hui1; Guo Jian-qiang1,2,4; Liu Lang1 | |
| 刊名 | New carbon materials
 |
| 2008-06-01 | |
| 卷号 | 23期号:2页码:121-126 |
| 关键词 | Pan Carbon fibers Carbonization Raman spectrum Xrd Tg-ms |
| ISSN号 | 1007-8827 |
| 通讯作者 | Yang yong-gang(yangyg@sxicc.ac.cn) |
| 英文摘要 | The 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(2) 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. |
| WOS关键词 | CARBON-FIBERS ; PAN FIBERS ; DEGREES-C ; STABILIZATION ; BEHAVIOR |
| WOS研究方向 | Materials Science |
| WOS类目 | Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000257170500005 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2386117 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yang Yong-gang |
| 作者单位 | 1.Chinese Acad Sci, Inst Coal Chem, Key Lab Carbon Mat, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Beijing Aeronaut Mfg Technol Res Inst, Beijing 100024, Peoples R China 4.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen Yue-fang,Cao Xia,Yang Yong-gang,et al. Carbonization of pre-oxidized polyacrylonitrile fibers[J]. New carbon materials,2008,23(2):121-126. |
| APA | Wen Yue-fang,Cao Xia,Yang Yong-gang,Li Hui,Guo Jian-qiang,&Liu Lang.(2008).Carbonization of pre-oxidized polyacrylonitrile fibers.New carbon materials,23(2),121-126. |
| MLA | Wen Yue-fang,et al."Carbonization of pre-oxidized polyacrylonitrile fibers".New carbon materials 23.2(2008):121-126. |
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