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Mechanical and Corrosion Protection Properties of a Smart Composite Epoxy Coating with Dual-Encapsulated Epoxy/Polyamine in Carbon Nanospheres
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2019-02-15 , DOI: 10.1021/acs.iecr.8b06306 S. A. Haddadi 1 , A. Ramazani S. A. 1 , M. Mahdavian 2 , P. Taheri 3 , J. M. C. Mol 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2019-02-15 , DOI: 10.1021/acs.iecr.8b06306 S. A. Haddadi 1 , A. Ramazani S. A. 1 , M. Mahdavian 2 , P. Taheri 3 , J. M. C. Mol 3
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Carbon nanocapsules doped separately with epoxy and polyamine were used to fabricate an epoxy nanocomposite coating. Carbon nanospheres with dual-encapsulated epoxy/polyamine were dispersed uniformly in the epoxy resin at concentrations of 2, 5, and 10 wt %. The mechanical properties of the nanocomposites were studied by tensile testing and scratch hardness measurements. Furthermore, nanocomposites were applied on mild steel substrates, and their corrosion protection and barrier performance were evaluated using electrochemical impedance spectroscopy (EIS). Adhesion loss measurements of coatings after 240 h exposure to 3.5 wt % NaCl solution were performed by pull-off adhesion testing. Also, the buried steel/polymer interface was studied in situ using attenuated total reflection Fourier transform infrared spectroscopy in the Kretschmann geometry. The results showed that both mechanical and corrosion protection properties of the prepared nanocomposites are enhanced as compared to the baseline epoxy coating and improved with the concentration of doped carbon nanocapsules. Maximum mechanical and corrosion protection properties were achieved in the case of 10 wt % doped carbon nanocapsules as a result of active intermolecular interactions between the epoxy and polyamine chains of the coating matrix and amine groups grafted on the surface of carbon capsules.
中文翻译：
碳纳米球中双包封环氧树脂/多胺的智能复合环氧树脂涂料的机械和腐蚀防护性能
分别用环氧树脂和多胺掺杂的碳纳米胶囊被用于制造环氧纳米复合材料涂层。将具有双包封的环氧树脂/多胺的碳纳米球以2、5和10 wt％的浓度均匀分散在环氧树脂中。通过拉伸测试和划痕硬度测量研究了纳米复合材料的机械性能。此外，将纳米复合材料应用于低碳钢基材上，并使用电化学阻抗谱（EIS）评估其防腐性能和阻隔性能。通过剥离粘合力测试对暴露于3.5 wt％NaCl溶液中240 h后涂层的粘合力损失进行测量。另外，在克雷施曼几何中，使用衰减全反射傅里叶变换红外光谱技术对埋藏的钢/聚合物界面进行了原位研究。结果表明，与基线环氧涂层相比，所制备的纳米复合材料的机械性能和腐蚀防护性能均得到增强，并且随着掺杂碳纳米胶囊的浓度而提高。在掺杂碳纳米胶囊的重量百分比为10％的情况下，由于涂层基质的环氧基和多胺链与接枝在碳胶囊表面的胺基团之间发生了有效的分子间相互作用，因此获得了最大的机械和防腐性能。
更新日期：2019-02-15
中文翻译：
碳纳米球中双包封环氧树脂/多胺的智能复合环氧树脂涂料的机械和腐蚀防护性能
分别用环氧树脂和多胺掺杂的碳纳米胶囊被用于制造环氧纳米复合材料涂层。将具有双包封的环氧树脂/多胺的碳纳米球以2、5和10 wt％的浓度均匀分散在环氧树脂中。通过拉伸测试和划痕硬度测量研究了纳米复合材料的机械性能。此外，将纳米复合材料应用于低碳钢基材上，并使用电化学阻抗谱（EIS）评估其防腐性能和阻隔性能。通过剥离粘合力测试对暴露于3.5 wt％NaCl溶液中240 h后涂层的粘合力损失进行测量。另外，在克雷施曼几何中，使用衰减全反射傅里叶变换红外光谱技术对埋藏的钢/聚合物界面进行了原位研究。结果表明，与基线环氧涂层相比，所制备的纳米复合材料的机械性能和腐蚀防护性能均得到增强，并且随着掺杂碳纳米胶囊的浓度而提高。在掺杂碳纳米胶囊的重量百分比为10％的情况下，由于涂层基质的环氧基和多胺链与接枝在碳胶囊表面的胺基团之间发生了有效的分子间相互作用，因此获得了最大的机械和防腐性能。
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