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High-efficiency self-repairing anticorrosion coatings with controlled assembly microcapsules

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Abstract

Based on the principle of emulsion technology and self-assembly of materials, aromatic isocyanate derivatives easily reacted with polyols to form polyurethanes, and nonaromatic isocyanate derivatives were responsible for generating the capsule core of the self-healing microcapsules. In this paper, epoxy resin-based self-healing smart anticorrosion coatings with different types of microcapsules were prepared. The cores were IPDI/TMP–IPDI/DiPE–IPDI. The optimal conditions for the preparation of self-repairing microcapsules to achieve controlled assembly of a microcapsule material structure were determined. We set up a test model, incorporating thermal analysis, depression repair level calculation, salt spray corrosion tests, adhesion tests, and other indicators of application performance. The corrosion resistance was in the order: DiPE–IPDI > TMP–IPDI > IPDI > pure epoxy. The experimental results showed a self-healing efficiency of more than 80% for cores of DiPE–IPDI. Taking into account the overall properties, the best-quality coatings contained approximately 5% microcapsules of DiPE–IPDI.

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Authors and Affiliations

  1. Shenyang Research Institute of Chemical Industry Co., Ltd, Shenyang, 110021, China

    Fanhou Kong, Weichang Xu, Xuelong Zhang, Xin Wang, Yu Zhang & Jinglong Wu

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  1. Fanhou Kong
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  2. Weichang Xu
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  3. Xuelong Zhang
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  4. Xin Wang
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  5. Yu Zhang
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  6. Jinglong Wu
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Correspondence to Fanhou Kong.

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There is no conflict of interest for this manuscript. We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled, “High Efficiency Self-repairing Anticorrosion Coatings with Controlled Assembly Microcapsules.”

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Kong, F., Xu, W., Zhang, X. et al. High-efficiency self-repairing anticorrosion coatings with controlled assembly microcapsules. J Mater Sci 53, 12850–12859 (2018). https://doi.org/10.1007/s10853-018-2596-6

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  • DOI: https://doi.org/10.1007/s10853-018-2596-6

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