采用一种改进的化学气相沉积法在炭纤维表面制备碳纳米管.为了提高炭纤维表面的润湿性能,炭纤维在浸渍之前先在CVD设备中在真空下973 K的高温处理,然后在硝酸和浓硫酸体积比为3∶1的混合酸中酸处理30 min.而改进的化学气相沉积法关键在于让催化剂的还原步骤和碳纳米管的生长步骤同时进行.这样通过减小过渡金属元素与炭纤维之间的接触时间从而降低了它们之间的相互扩散,在确保了炭纤维本身的力学性能下降程度明显小于用普通化学气相法制备的情况下生长出长且茂密的碳纳米管阵列.另外,经过对工艺参数的优化发现当用乙醇作溶剂,Fe(NO3)3·9H2O溶度为100 mmol/L,氢气和碳源气体比值为4/1,而生长时间为30 min时得到最好的碳纳米管阵列.
参考文献
| [1] | Edie D D;Robinson K E;Fleurot O et al.High thermal conductivity ribbon fibers from naphthalene-based mesophase[J].Carbon,1994,32(06):1045-1054. |
| [2] | Barnes AB.;Gallego NC.;Fain CC.;Thies MC.;Dauche FM. .As-spun orientation as an indication of graphitized properties of mesophase-based carbon fiber[J].Carbon: An International Journal Sponsored by the American Carbon Society,1998(7/8):855-860. |
| [3] | Tsuyoshi Ozaki;Kimiyoshi Naito;izumi Mikami .High Precision composite Pipes for SOLAR-B Optical Structures[J].Acta astronautica,2001(5/12):32-327. |
| [4] | 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. |
| [5] | S. CHAND .Review Carbon fibers for composites[J].Journal of Materials Science,2000(6):1303-1313. |
| [6] | L. Guerra Rosa;A. Colella;C.A. Anjinho .Effect of Paraffin Oil Used as a Lubricant in Tensile Tests of Carbon Fibre Bundles[J].Materials Science Forum,2006(Pt.1):672-676. |
| [7] | Meyyappan M.Carbon Nanotubes:Science and Applications[M].NASA Ames Research Center Moffett Field,CA:CRC Press LLC,2004:14-16. |
| [8] | Kim P.;Majumdar A.;McEuen PL.;Shi L. .Thermal transport measurements of individual multiwalled nanotubes - art. no. 215502[J].Physical review letters,2001(21):5502-0. |
| [9] | Li WZ.;Yang SX.;Wen JG.;Ren ZF.;Wang DZ. .Controlled growth of carbon nanotubes on graphite foil by chemical vapor deposition[J].Chemical Physics Letters,2001(3-4):141-149. |
| [10] | Yuxue Xia;Leyong Zeng;Weibiao Wang;Jingqiu Liang;Da Lei;Song Chen;Haifeng Zhao .Synthesis and characterization of carbon nanotubes on carbon microfibers by floating catalyst method[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2007(16):6807-6810. |
| [11] | Valdirene Gonzaga de Resende;Erica Freire Antunes;Anderson de Oliveira Lobo .Growth of carbon nanotube forests on carbon fibers with an amorphous silicon interface[J].Carbon: An International Journal Sponsored by the American Carbon Society,2010(12):3655-3658. |
| [12] | Weiser P S;Prawer S;Hoffman A et al.Carbon diffusion in uncoated and titanium nitride coated iron substrates during microwave plasma assisted chemical vapor deposition of diamond[J].Journal of Applied Physics,1992,72(10):4643-4647. |
| [13] | Zhu S.;White HW.;Shahedipour F. .Low-temperature synthesis of diamond-like carbon films on steel substrates by electron-cyclotron-resonance plasma-enhanced chemical vapor deposition[J].Journal of the American Ceramic Society,1998(4):1041-1044. |
| [14] | Cheng HM.;Su G.;Pan HY.;He LL.;Sun X.;Dresselhaus MS.;Li F. .Large-scale and low-cost synthesis of single-walled carbon nanotubes by the catalytic pyrolysis of hydrocarbons[J].Applied physics letters,1998(25):3282-3284. |
| [15] | Jianguo Zhao;Lang Liu;Quangui Guo .Growth of carbon nanotubes on the surface of carbon fibers[J].Carbon: An International Journal Sponsored by the American Carbon Society,2008(2):380-383. |
| [16] | Pimenta MA;Dresselhaus G;Dresselhaus MS;Cancado LG;Jorio A;Saito R .Studying disorder in graphite-based systems by Raman spectroscopy[J].Physical chemistry chemical physics: PCCP,2007(11):1276-1291. |
| [17] | Kiyoshi Otsuka;Hitoshi Ogihara;Sakae Takenaka .Decomposition of methane over Ni catalysts supported on carbon fibers formed from different hydrocarbons[J].Carbon: An International Journal Sponsored by the American Carbon Society,2003(2):223-233. |
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%