硫酸铜掺杂TiO<sub>2</sub>涂层对碳纤维抗氧化性能的影响

引用本文: 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. doi: 10.3969/j.issn.1001-4861.2013.00.403 shu

Citation: WANG Yong, YU Hai-Peng, HU Yong-Qi, ZHAO Rui-Hong, LI Fei-Long, ZHANG Wen-Jiao, ZHANG Zhao-Xiang. Influence of CuSO₄ Doping on the Oxidation Resistance of TiO₂-Coated Carbon Fibers[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(12): 2549-2554. doi: 10.3969/j.issn.1001-4861.2013.00.403 shu

硫酸铜掺杂TiO₂涂层对碳纤维抗氧化性能的影响

基金项目:
河北省自然科学基金(B2013208155) (B2013208155)

国家自然科学基金(No.60578041)资助项目。 (No.60578041)

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

English

Influence of CuSO₄ Doping on the Oxidation Resistance of TiO₂-Coated Carbon Fibers

1.
1 School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
Received Date: 27 May 2013
Fund Project:
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.

Key words:

TiO₂;carbon fibers;oxidation resistance;liquid phase sintering

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

硫酸铜掺杂TiO₂涂层对碳纤维抗氧化性能的影响

English

Influence of CuSO₄ Doping on the Oxidation Resistance of TiO₂-Coated Carbon Fibers

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硫酸铜掺杂TiO2涂层对碳纤维抗氧化性能的影响

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