开发用于海洋潮汐区钢材保护的自修复防腐涂层

IF 1.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-04-10 DOI:10.1002/maco.202314174
Navid Atazadeh, Farhad Shahriari Nogorani
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引用次数: 0

摘要

为暴露在海洋潮汐区的钢 st-37 开发了一种由多层聚合物涂层组成的自修复防腐保护层。涂层包括富锌环氧底漆、自愈合微胶囊嵌入式环氧树脂和由聚氨酯与纳米二氧化硅颗粒组成的面漆。在封装过程中,微胶囊的尺寸随着搅拌次数的增加而减小,从 4 微米到 43 微米不等。在合成环境 pH 值为 3、合成持续时间为 130 分钟的条件下,1680 转/分钟的搅拌速度和 3 的 pH 值都能产生尺寸达 5 微米的封装颗粒,且嵌入的愈合剂的负载量超过 90%。微胶囊和二氧化硅纳米颗粒的最佳用量分别为 10 和 1.5 wt%。此外,承诺的自愈合防腐涂层可使受损区域在近 12 小时的恶劣条件下完全愈合。与非自愈合涂层相比,所开发的自愈合涂层的愈合能力显示出良好的阻隔特性,并导致较少的界面附着力损失。
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Developing a self-healing anticorrosion coating for steel protection in marine tidal zone

A self-healing anticorrosion protective was developed for steel st-37 exposed to the marine tidal zone, which is composed of a multi-layer polymer coating. The coating includes zinc-rich epoxy primer, self-healing microencapsulated embedded epoxy, and a top coat consisting of polyurethane incorporated with silica nanoparticles. The size of microcapsules decreased with increasing agitation during encapsulation, which varies from 4 to 43 µm. Good performance was observed for producing the encapsulated particles with a size of up to 5 µm and more than 90% loading of the embedded healing agent, in which a 1680 rpm agitation along with a pH of 3 for the synthesis environment and a 130 min for the synthesis duration is set. The optimal amount of microcapsules and silica nanoparticles was 10 and 1.5 wt%, respectively. Also, the promised self-healing anticorrosion coating leads the damaged areas to be fully healed in almost 12 h in the face of harsh conditions. In contrast to the non-self-healing one, the healing ability of the developed self-healing coating shows good barrier properties and leads to a lesser loss of interface adhesion.

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来源期刊
Materials and Corrosion-werkstoffe Und Korrosion
Materials and Corrosion-werkstoffe Und Korrosion 工程技术-材料科学:综合
CiteScore
3.70
自引率
11.10%
发文量
199
审稿时长
1.4 months
期刊介绍: Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention. Several sections exclusive to Materials and Corrosion bring you closer to the current events in the field of corrosion research and add to the impact this journal can make on your work.
期刊最新文献
Calendar of Events Cover Picture: Materials and Corrosion. 11/2024 Masthead: Materials and Corrosion. 11/2024 Contents: Materials and Corrosion. 11/2024 Calendar of Events
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