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A promising nanocomposite from CNTs and nanoceria: nanostructured fillers in polyurethane coatings for surface protection

机译：碳纳米管和纳米氧化铈的有前途的纳米复合材料：聚氨酯涂料中用于表面保护的纳米结构填料

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摘要

The balanced combination of nanostructured carbon materials and metal oxide nanoparticles has been considered as an efficient reinforcement material in developing next-generation multifunctional coatings. Herein, we demonstrate a general approach to fabricate a CNT based nanocomposite with the inclusion of CeO2 nanoparticles that can be effectively implemented as a reinforcement material in surface protective coatings. The synthesized CNT/CeO2 nanocomposite was characterized by spectral and surface morphological analyses, which indicated that the CeO2 nanoparticles were successfully deposited onto the surface of the CNTs. The XRD pattern shows the semi-crystalline nature of the CNTs and the face centered cubic structure of the CeO2 nanoparticles. The prepared nanocomposite has subsequently been used as a nanofiller in polyurethane (PU) coatings for surface protection of steel substrates and a remarkable synergistic effect of nano-ceria and CNTs has been observed. The corrosion resistance of steel coated with a PU coating containing CNT/CeO2 was pointedly higher than with a pure PU coating and a PU coating with CNTs alone. This result suggests a new prospect for solving the corrosion issues encountered on steel structures in industrial applications by using multifunctional hybrid coatings with nanostructured reinforcements.
机译：纳米结构碳材料和金属氧化物纳米颗粒的平衡组合已被认为是开发下一代多功能涂料的有效增强材料。在这里，我们展示了一种通用的方法来制造包含CeO2纳米颗粒的CNT基纳米复合材料，该复合材料可以有效地用作表面保护涂层中的增强材料。通过光谱和表面形态分析对合成的CNT / CeO2纳米复合材料进行了表征，表明CeO2纳米颗粒已成功沉积在CNTs表面。 XRD图谱显示了CNT的半结晶性质和CeO2纳米颗粒的面心立方结构。制备的纳米复合材料随后被用作聚氨酯（PU）涂料中的纳米填料，用于钢基材的表面保护，并且观察到纳米氧化铈和CNT具有显着的协同作用。明显地，涂有含CNT / CeO2的PU涂层的钢的耐蚀性比纯PU涂层和仅含CNT的PU涂层高。这一结果为解决工业应用中钢结构所遇到的腐蚀问题提供了新的前景，该解决方案是使用具有纳米结构增强层的多功能混合涂料。

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