使用石墨烯/有机交联壳异佛尔酮二异氰酸酯微胶囊的自愈合防腐蚀涂层

IF 4.5 3区 工程技术 Q1 CHEMISTRY, APPLIED Reactive & Functional Polymers Pub Date : 2024-06-26 DOI:10.1016/j.reactfunctpolym.2024.106000
Xiaoliang Meng , Wei Xie , Qu Yang , Yi Cao , Juanna Ren , Abdulraheem S A Almalki , Yongping Xu , Taishan Cao , Mohamed M. Ibrahim , Zhanhu Guo
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引用次数: 0

摘要

为了提高涂料在恶劣腐蚀环境中的防腐性能,研究人员通过原位聚合制备了石墨烯/异佛尔酮二异氰酸酯(IPDI)微胶囊。研究了基于这些微胶囊的涂层的自愈合和防腐性能。本研究制备的具有交联外壳的微胶囊解决了传统微胶囊体积过大和强度不足的问题。微胶囊的加入提高了涂层的防腐性能。微胶囊的形状为圆球状,平均粒径和厚度在 17-23 μm 和 0.5-3.4 μm 之间,有利于涂层的制备。微胶囊的平均强度为 20.64 兆帕,包覆率达到 68%。微胶囊的初始蒸发温度为 231.3 °C,石墨烯有机交联外壳增强了微胶囊的强度,提高了微胶囊的热稳定性。电化学阻抗谱(EIS)表明,浸泡 168 h 后,含 10 wt% 微胶囊的涂层的 |Z|f=0.01 Hz 值约为 9.4 × 109 Ω cm2,比不含微胶囊的涂层(6.9 × 106 Ω cm2)高出近三个数量级。使用扫描电子显微镜(SEM)监测涂层的人工划痕 24 小时后发现,微胶囊能很好地修复裂纹。这表明石墨烯/IPDI 微胶囊的加入提高了涂层的抗腐蚀性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Self-healing anti-corrosive coating using graphene/organic cross-linked shell isophorone diisocyanate microcapsules

To enhance the anticorrosive performance of coatings in harsh corrosive environments, a graphene/isophorone diisocyanate (IPDI) microcapsule is prepared by in-situ polymerization. The self-healing and anticorrosive performance of coatings based on these microcapsules are studied. The microcapsule with cross-linked shells prepared in this study solves the problems of excessive size and insufficient strength of traditional microcapsules. The addition of microcapsules improves the anticorrosive performance of coatings. The shape of the microcapsules is in the form of round balls, and the average particle size and thickness of the microcapsules are in the range of 17–23 μm and 0.5–3.4 μm, which are conducive to the preparation of the coatings. The average strength of microcapsules is 20.64 MPa and the wrap-around rate reaches 68%. The microcapsules have an initial evaporation temperature of 231.3 °C, the graphene organic cross-linking shell enhances the strength and improves the thermal stability of microcapsules. The electrochemical impedance spectroscopy (EIS) indicates that the |Z|f=0.01 Hz value of the coating with 10 wt% of microcapsule after 168 h of immersion is about 9.4 × 109 Ω cm2, nearly three orders of magnitude higher than that of the coating without microcapsule (6.9 × 106 Ω cm2). Monitoring the artificial scratches of coating using a scanning electron microscope (SEM) for 24 h reveals that the microcapsule repairs the cracks well. It is demonstrated that the incorporation of graphene/IPDI microcapsules improves the anti-corrosive performance of the coating.

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来源期刊
Reactive & Functional Polymers
Reactive & Functional Polymers 工程技术-高分子科学
CiteScore
8.90
自引率
5.90%
发文量
259
审稿时长
27 days
期刊介绍: Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.
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