| 硫酸铜掺杂TiO2涂层对碳纤维抗氧化性能的影响 |
| Influence of CuSO4 Doping on the Oxidation Resistance of TiO2-Coated Carbon Fibers |
| 作者 | 单位 | E-mail | | 王勇 | 河北科技大学化学与制药工程学院, 石家庄 050018
Department of Chemical & Biomolecular Engineering, The University of Melbourne, 3010, Australia | | | 余海鹏 | 河北科技大学化学与制药工程学院, 石家庄 050018 | | | 胡永琪 | 河北科技大学化学与制药工程学院, 石家庄 050018 | yuhp89@163.com | | 赵瑞红 | 河北科技大学化学与制药工程学院, 石家庄 050018 | | | 李飞龙 | 河北科技大学化学与制药工程学院, 石家庄 050018 | | | 张文娇 | 河北科技大学化学与制药工程学院, 石家庄 050018 | | | 张兆翔 | 河北科技大学化学与制药工程学院, 石家庄 050018 | |
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| 摘要: 采用溶胶-浸渍法，以CuSO4为烧结助剂在碳纤维表面制得TiO2涂层。利用XRD、SEM和TEM分析了涂层相组成及形貌，通过静态等温氧化实验考察了涂层碳纤维抗氧化性能。结果表明：掺杂CuSO4制备TiO2涂层均匀完整致密，涂层相组成均为锐钛矿型TiO2，且涂层厚度从45 nm提高至185 nm；与普通TiO2涂层碳纤维相比，完全氧化温度从667 ℃上升到800 ℃，氧化活化能从118.390 kJ·mol-1提高到152.562 kJ·mol-1，CuSO4的掺杂大大提高了TiO2涂层碳纤维的抗氧化性能。 |
| 关键词: TiO2 碳纤维 抗氧化性能 液相烧结 |
| 基金项目: 河北省自然科学基金（B2013208155）、国家自然科学基金（No.60578041）资助项目。 |
| Abstract: Carbon fiber (CF) was coated with TiO2 layer by sol-dipping method using CuSO4 as dopant. The prepared samples were characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM) and transmission electron microscopy (TEM). The SEM/TEM results show that the prepared CuSO4-TiO2 layer is uniformly and compactly. The thickness of the coating layer is increased from 45 nm to 185 nm. XRD results show that prepared layer is composited by anatase TiO2. The oxidation resistant properties of the carbon fibers were studied using isothermal oxidation experimental. Compared with TiO2 coated carbon fiber, the complete decomposition temperature of the CuSO4-TiO2 coated carbon fiber is increased from 667 ℃ to 800 ℃. The oxidation activation energy of TiO2 coating carbon fiber and CuSO4-TiO2 coating carbon fiber are 118.390 kJ· mol-1, 152.562 kJ·mol-1, respectively. The improvement of oxidation resistant of the CuSO4-TiO2 coated carbon fiber is attributed to the CuSO4 liquid sinter effect on the TiO2 layer. |
| Keywords: TiO2 carbon fibers oxidation resistance liquid phase sintering |
| 投稿时间：2013-05-27 修订日期：2013-07-31 |
| 摘要点击次数: 1685 |
| 全文下载次数: 1855 |
| 王勇,余海鹏,胡永琪,赵瑞红,李飞龙,张文娇,张兆翔.硫酸铜掺杂TiO2涂层对碳纤维抗氧化性能的影响[J].无机化学学报,2013,29(12):2549-2554. |
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