利用SEM、元素分析、XRD和激光Raman光谱研究了T300和T700的形貌、化学组成和微观结构参数.结果发现:T700炭纤维表面光滑,而T300炭纤维的表面有大量的沟槽.表明前者是用干喷湿纺原丝,后者是用湿法纺丝原丝.两种纤维的断面均呈现出颗粒状特征.T700的含碳量高于T300,含氮量低于T300.两者的微观结构参数(d002、La和Lc)差异佐证了T700的炭化温度高于T300.T700的择优取向角Z比T300小2.3°,是石墨微晶致密有序排列的反映,因而使其体密度比T300高2.27%,空隙率低7.54%.所以致密化赋予了T700较高的拉伸强度.
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,2004:6. |
| [2] | 贺福,赵建国,王润娥.炭纤维开发与炭纤维原丝质量[J].新型碳材料,1998(01):64-74. |
| [3] | 张利珍,吕春祥,吕永根,吴刚平,贺福.聚丙烯腈纤维在预氧化过程中的结构和热性能转变[J].新型炭材料,2005(02):144-150. |
| [4] | 韩曙鹏,徐樑华,曹维宇,姚红,白丽芳.成纤过程中PAN纤维聚集态结构的形成[J].新型炭材料,2006(01):54-58. |
| [5] | 王延相,王成国,朱波,何东新,井敏,王强.聚丙烯腈基炭纤维制备过程中的表面形态和结构研究[J].新型炭材料,2005(01):51-57. |
| [6] | 任富忠,吕春祥,梁晓怿,吴刚平,贺福,凌立成.氨化对湿纺PAN初生丝条结构的影响[J].新型炭材料,2004(04):268-274. |
| [7] | A.A.Ogale;C.Lin;D.P.Anderson;K.M.Kearns .Orientation and dimensional changes in mesophase pitch-based carbon fibers[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(8):1309-1319. |
| [8] | Johnson D J .Recent advances in studies of carbon fibrestructure[J].PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A:MATHEMATICAL AND PHYSICAL SCIENCES,1980,294:443-449. |
| [9] | Cedric Sauder;Jacques Lamon;Rene Pailler .The tensile behavior of carbon fibers at high temperatures up to 2400 deg C[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(4):715-725. |
| [10] | Tuinstra F;Koenig J L .Raman spectrum of graphite[J].Journal of Chemical Physics,1970,53(03):1126-1130. |
| [11] | T. JAWHARI;A. ROID;J. CASADO .RAMAN SPECTROSCOPIC CHARACTERIZATION OF SOME COMMERCIALLY AVAILABLE CARBON BLACK MATERIALS[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(11):1561-1565. |
| [12] | Sadezky A;Muckenhuber H;Grothe H;Niessner R;Poschl U .Raman micro spectroscopy of soot and related carbonaceous materials: Spectral analysis and structural information[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(8):1731-1742. |
| [13] | Melanitis N.;Galiotis C.;Tetlow PL. .CHARACTERIZATION OF PAN-BASED CARBON FIBRES WITH LASER RAMAN SPECTROSCOPY .1. EFFECT OF PROCESSING VARIABLES ON RAMAN BAND PROFILES[J].Journal of Materials Science,1996(4):851-860. |
| [14] | Cuesta A;Dhamelincourt P;Laureyns J et al.Raman microprobe studies on carbon materials[J].CARBON,1994,32(08):1523-1532. |
| [15] | 薛林兵,王浩静,李东风.牵伸石墨化对石墨纤维结构和力学性能的影响[J].新型炭材料,2006(03):243-247. |
| [16] | 王浩静,王红飞,李东风,朱星明,贺福,王心葵.石墨化温度对炭纤维微观结构及其力学性能的影响[J].新型炭材料,2005(02):157-163. |
| [17] | Fitzer E .PAN based carbon fibers-present state and trend of the technology from the viewpoint of possibilities and limits to influence and to control the fiber properties by the process parameters[J].Carbon,1989,27(05):621-645. |
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%