Synthesis and characterization
Synthesis and characterization
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DOI：
10.1177/0954008314551033
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发表时间：
2015-05
影响因子：
2.1
通讯作者：
Yi He;Chunlin Chen;Fei Zhong;Hangyun Chen
中科院分区：
文献类型：
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作者：
Yi He;Chunlin Chen;Fei Zhong;Hangyun Chen
采用硝化酸化法对多壁碳纳米管（MWCNTs）进行酸化处理，然后采用溶胶-凝胶法制备了SiO2-MWCNTs杂化材料，并通过扫描电镜（SEM）、X射线衍射（XRD）和热重分析（TGA）对实验结果进行了验证。采用硅烷偶联剂（KH 560）对杂化材料进行改性，分别制备了SiO2-MWCNTs/环氧树脂、MWCNTs/环氧树脂复合涂层和纯环氧树脂涂层。采用电化学工作站（电子电离喷雾）测试了材料的阻抗性能;通过冲击实验和热重分析测试了材料的力学性能和热稳定性。最后，我们用扫描电镜观察涂层的表面状况。结果表明，SiO2-MWCNTs在环氧树脂中具有良好的分散性，SiO2-MWCNTs/环氧复合涂层的力学性能和耐腐蚀性能得到了提高。
Multiwalled carbon nanotubes (MWCNTs) were acidified with nitration mixture; the silicon oxide-coated MWCNTs (SiO2-MWCNTs) hybrid material was then prepared via the sol–gel method, and the results were verified using scanning electron microscopy (SEM), X-ray diffraction, and thermogravimetric analysis (TGA). We modified the hybrid material with silane coupling agent (KH560) and prepared SiO2-MWCNTs/epoxy, MWCNTs/epoxy composite coating, and the pure epoxy coating, respectively. The impedance performance was tested using electrochemical workstation (electron ionization spray); then, the mechanical properties and thermal stability were tested through the shock experiments and TGA. Finally, we used SEM to observe the coating surface condition. The results show that SiO2-MWCNTs have a good dispersion in the epoxy resin and the mechanical properties and corrosion resistance of SiO2-MWCNTs/epoxy composite coating have enhanced.