Carbon nanotube growth on high modulus carbon fibres: Morphological and interfacial characterization
Carbon nanotube growth on high modulus carbon fibres: Morphological and interfacial characterization
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DOI：
10.1002/sia.5292
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发表时间：
2013-09-01
影响因子：
1.7
通讯作者：
Paipetis, A. S.
中科院分区：
文献类型：
--
作者：
Boura, O.;Diamanti, E. K.;Paipetis, A. S.
采用催化化学气相沉积法在碳纤维表面直接生长碳纳米管。采用简单的湿浸渍法在碳纤维上沉积了FeCo γ-Al_2O_3催化剂。在750 ℃催化乙炔裂解制备碳纳米管。使用扫描电子显微镜验证了纤维表面上均匀的CNT形成。采用拉曼光谱法非破坏性地评估CNT生长和CNT质量。采用热重分析和差热分析作为破坏性方法来确认光谱数据。单碳纳米管涂层的纤维断裂试验进行检查的改性纤维的界面剪切强度（ISS）。采用声发射技术对破碎过程进行了真实的实时监测。因此，涂层纤维的结构完整性与其应力传递性能一起进行评估。采用偏光显微镜对声发射数据进行交叉验证。结果发现，纳米管增强界面相的ISS得到改善，而不影响纤维的力学性能。版权所有（C）2013约翰威利父子有限公司
Carbon nanotubes (CNTs) were grown directly on the surface of carbon fibres, using the catalytic chemical vapour deposition. FeCo bimetallic catalysts were deposited on carbon fibres using a simple wet impregnation method. CNTs were synthesized over the prepared catalysts by the catalytic decomposition of acetylene at 750 degrees C. The uniform CNT formation on the fibre surface was verified using scanning electron microscopy. Raman spectroscopy was employed to evaluate non-destructively the CNT growth and the CNT quality. Thermo gravimetric analysis and differential thermal analysis were employed as destructive methods to confirm the spectroscopic data. Single CNT-coated fibre fragmentation tests were performed to examine the interfacial shear strength (ISS) of the modified fibres. Acoustic emission was employed to monitor the fragmentation process in real time. Thus, the coated fibre structural integrity was assessed together with its stress transfer properties. Polarized optical microscopy was employed to cross validate the acoustic emission data. It was found that the ISS of the nanotube-reinforced interphase was improved without affecting the fibre mechanical properties. Copyright (C) 2013 John Wiley & Sons, Ltd.