采用X射线和径向分布函数研究分析了聚丙烯腈( PAN)基碳纤维制备过程中的结构演变.结果表明,PAN原丝中存在着与石墨类似的结构,该结构是石墨微晶结构形成的重要基础；PAN大分子链最近邻链间间距为0.688nm；碳化温度在500 ～ 1250℃范围内的碳化纤维中的第三近邻距离均大于石墨晶体的第三近邻距离,表明碳纤维中没有形成平面构型的六元环石墨烯层片；在整个碳纤维的制备过程中,纤维结构经历了长程有序-长程无序、短程有序-长程有序的演变.
参考文献
| [1] | 贺福.碳纤维及其应用技术[M].北京:化学工业出版社,2004 |
| [2] | 赵东林,沈曾民,迟伟东.炭纤维及其复合材料的吸波性能和吸波机理[J].新型炭材料,2001(02):66-72. |
| [3] | 李丽娅,黄启忠,张红波.聚丙烯腈基炭纤维的组织结构及力学性能[J].中南大学学报（自然科学版）,2005(02):193-197. |
| [4] | XU Haiping,SUN Yanping,CHEN Xinmou.Microstructure characterization of PAN preoxidation fibers prepared with radio frequency plasma[J].科学通报（英文版）,2006(10):1255-1260. |
| [5] | 刘杰,李佳,王雷,梁节英.预氧化温度对聚丙烯腈纤维皮芯结构形成的影响[J].北京化工大学学报（自然科学版）,2006(01):41-45. |
| [6] | 季敏霞,王成国.聚丙烯腈基碳纤维制备过程中微观结构的演变[J].材料导报,2007(05):111-114. |
| [7] | 刘福杰,范立东,王浩静,朱珍平.高强度炭纤维微观结构分析及力学性能的比较[J].功能材料,2007(10):1723-1726,1730. |
| [8] | LI F;LANNIN J S .Radial distribution function of amorphous carbon[J].Physical Review Letters,1990,65(15):1905-1908. |
| [9] | A. Szczygielska;A. Burian;S. Duber .Radial distribution function analysis of the graphitization process in carbon materials[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2001(1/2):231-236. |
| [10] | KUMAR A;LOBO R F;WAGNER N J .Porous amorphous carbon models from periodic Gaussian chains of amorphous polymer[J].Carbon,2005,43:3099-3111. |
| [11] | HU R Z;EGAMI T .Local intermolecular correlations in C60[J].Physical Review B,1992,45(16):9517-9520. |
| [12] | NICHOLAS D M;MARJORAM J R;WHITTAKER O C .Crystallite size effects on the radial distribution analysis of carbon fibers[J].Journal of Applied Crystallography,1972,5:262-267. |
| [13] | PETKOV V;DIFRANCESCO R G;BILLINGE S J L et al.Local structure of nanoporous carbons[J].PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANIC,1999,79(10):1519-1530. |
| [14] | 李树堂.X射线衍射实验方法[M].北京:冶金工业出版社,2000 |
| [15] | GUPTA A K;SINGHAL R P .Effect of copolymerization and heat treatment on the structure and X-ray diffraction of polyacrylonitrile[J].Journal of Polymer Science Part B:Polymer Physics,1983,21:2243-2262. |
| [16] | IMAI Y;MINAMI S;YOSHIHARA T et al.Preparation and characterization of amorphous polyacryloni-trile[J].Journal of Polymer Science Part B:Polymer Physics,1970,8:281-288. |
| [17] | 吴宏仁;吴立峰.纺织纤维的结构和性能[M].北京:纺织工业出版社,1985 |
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%