当前位置: X-MOL 学术Corros. Eng. Sci. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Water-based epoxy coatings with pH-sensitive TiO2 containers for active corrosion protection of carbon steel
Corrosion Engineering, Science and Technology ( IF 1.8 ) Pub Date : 2020-05-28 , DOI: 10.1080/1478422x.2020.1772527
Xuehui Liu 1 , Ma Zheng 2 , Tong Hongtao 1 , Li Kaiwei 1 , Hou Baorong 3
Affiliation  

ABSTRACT Smart containers can be produced with polyelectrolyte multilayers that can release inhibitors in response to environmental changes at the coating defects. In this study, mesoporous TiO2 hollow spheres were adopted as carriers for the encapsulation of corrosion inhibitor. The inhibitor-loaded TiO2 containers were modified by polyelectrolyte shells using layer-by-layer self-assembly technology. The release behaviour of the encapsulated inhibitor was investigated using UV–visible spectroscopy. Corrosion protection performance of the epoxy coating with polyelectrolyte-modified TiO2 containers was studied using electrochemical impedance spectroscopy and scanning Kelvin probe (SKP) techniques. Epoxy coating with the polyelectrolyte-modified TiO2 containers provided better barrier properties than that of the blank coating. Waterborne epoxy coating impregnated with the polyelectrolyte-modified TiO2 containers presented a significant self-healing effect after immersion in 0.5 M NaCl solution from the SKP results.

中文翻译:

具有 pH 敏感 TiO2 容器的水性环氧涂料,用于碳钢的主动腐蚀保护

摘要 智能容器可以用聚电解质多层生产,可以在涂层缺陷处释放抑制剂以响应环境变化。在这项研究中,介孔 TiO2 空心球被用作包封缓蚀剂的载体。使用逐层自组装技术通过聚电解质壳对负载抑制剂的 TiO2 容器进行改性。使用紫外-可见光谱研究了包封抑制剂的释放行为。使用电化学阻抗谱和扫描开尔文探针 (SKP) 技术研究了带有聚电解质改性 TiO2 容器的环氧树脂涂层的防腐性能。带有聚电解质改性 TiO2 容器的环氧树脂涂层提供了比空白涂层更好的阻隔性能。
更新日期:2020-05-28
down
wechat
bug