提出了制备渗铁PAN碳纤维的一种新方法,研究了铁元素对碳纤维热行为的影响,探讨了铁元素对碳纤维热行为影响机理.结果表明,在初生纤维上浸渍Fe2(SO4) 3/DMSO溶液的方法制备得到的PAN碳纤维中元素铁含量在0.26％以上,其在纤维截面上分布均匀.铁元素对碳纤维热稳定性影响与碳纤维经历的热历史有关,在1700℃以上热处理过的渗铁碳纤维热稳定性较之2200℃热处理过的碳纤维热稳定性高.同时,铁元素对碳纤维热稳定性表现出浓度效应,碳纤维中铁浓度在49 μg/g以上时,碳纤维耐热氧化能力随铁元素浓度的升高而降低.研究还表明,铁元素能降低了PAN碳纤维表面C1s费米能级,从而提高了碳纤维耐热氧化性.
参考文献
| [1] | Erich F .The future of carbon-carbon composites[J].Carbon,1987,25(02):163-190. |
| [2] | Xu B;Wang XS;Lu Y .Surface modification of polyacrylonitrile-based carbon fiber and its interaction with imide[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2006(5):2695-2701. |
| [3] | Kingsley K.C. Ho;Graham Beamson;George Shia .Surface and bulk properties of severely fluorinated carbon fibres[J].Journal of Fluorine Chemistry,2007(11):1359-1368. |
| [4] | 赵建国,李克智,李贺军,席琛,白瑞成,张秀莲.热处理温度对炭/炭复合材料性能的影响[J].材料热处理学报,2005(01):1-4. |
| [5] | Wei-Ming Guo;Han-Ning Xiao;Guo-Jun Zhang .Kinetics and mechanisms of non-isothermal oxidation of graphite in air[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(7):2007-2011. |
| [6] | Kazumasa Nakamura;Yasuhiro Tanabe;Manabu Fukushima;Yoshikazu Teranishi;Takashi Akatsu;Eiichi Yasuda .Analysis of surface oxidation behavior at 500 ℃ under dry air of glass-like carbon heat-treated from 1200 to 3000℃[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2009(1/3):40-45. |
| [7] | 贺福.碳纤维及其应用技术[M].北京:化学工业出版社,2004:24-27. |
| [8] | 李常清,袁姗,刘晖,童元建,徐樑华.金属离子对PAN基碳纤维结构和性能的影响[J].北京化工大学学报（自然科学版）,2009(01):40-43. |
| [9] | 李昭锐;李常清;靳玉伟.PAN碳纤维微晶结构高温演变与Fe元素相关性研究[A].北京:中国科学技术出版社,2010:338-342. |
| [10] | Jeffrey J W.Methods in X-ray Crystallography[M].London,UK:Academic Press,1971 |
| [11] | Dhakate SR.;Bahl OP.;Mathur RB. .CATALYTIC EFFECT OF IRON OXIDE ON CARBON/CARBON COMPOSITES DURING GRAPHITIZATION[J].Carbon: An International Journal Sponsored by the American Carbon Society,1997(12):1753-1756. |
| [12] | Jackson P W;Marjoram J R .Reerystallization of nickel-coated carbon fibers[J].Nature,1968,218:83-84. |
| [13] | W. WANG;K. M. THOMAS;R. M. POULTNEY;R. R. WILLMERS .IRON CATALYSED GRAPHITISATION IN THE BLAST FURNACE[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(11):1525-1535. |
| [14] | Tzeng SS .Catalytic graphitization of electroless Ni-P coated PAN-based carbon fibers[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(10):1986-1993. |
| [15] | Xie Yaoming;Sherwood P M A.X-ray photoelectron spectroscopic studies of carbon fiber surface Ⅱ:Difference in the surface chemistry and bulk structure of different carbon fiber based on poly and pitch and comparison with various graphite samples[J].Chemistry of Materials,1990(02):293-299. |
| [16] | Rousseau B.;Estrade-Szwarckopf H. .X-ray and UV photoelectron spectroscopy study of Na-halogen-graphite intercalation compounds. Comparison between donor- and acceptor-graphite compounds[J].Solid State Communications,2003(10):583-587. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%