An active self-healing and UV-resistant anticorrosion coating based on loading-enhanced nanocontainers tailored for Q235 carbon steel protection

被引：1

作者：

Wang, Lin ^{[1
]}

Zang, Jingyi ^{[1
]}

Liu, Tong ^{[1
]}

Sun, Fuyao ^{[1
]}

Wang, Qiang ^{[1
]}

Wang, Yin ^{[1
]}

Zhang, Tiancai ^{[2
]}

Xu, Jianhua ^{[1
]}

Fu, Jiajun ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Chem & Chem Engn, Nanjing 210094, Peoples R China

[2] Southwest Inst Technol & Engn, Chongqing 400039, Peoples R China

来源：

PROGRESS IN ORGANIC COATINGS | 2025年 / 201卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Corrosion protection; Triple effect; Controllable release; UV aging resistance; Epoxy coating; HEXAGONAL BORON-NITRIDE; MESOPOROUS SILICA NANOPARTICLES; CORROSION-INHIBITOR; COMPOSITE COATINGS; SURFACE-CHEMISTRY; MILD-STEEL; BENZOTRIAZOLE; POLYDOPAMINE; GRAPHENE; WATER;

D O I：

10.1016/j.porgcoat.2025.109128

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Complex self-healing methods and limited UV resistance restrict the application of reactive organic protective coatings for intelligent corrosion-protection in harsh marine environments. To address this, ultra-high aspect ratio boron nitride nanosheets (BNNS) were developed for uniform growth of polydopamine (PDA), loaded with benzotriazole (BTA). These BNNS/PDA/BTA (BPB) nanocontainers achieved high BTA loading (168.4 mu g/mg) with efficient pH-sensitive release and excellent corrosion resistance (1.41 x 1010 Omega & sdot;cm2). After 30 days of immersion, the corrosion-rate of modified epoxy coatings was only 1.25 x 10-5 mm/year, and UV absorption of BPB maintained coating stability under prolonged exposure. This work informs heavy-duty anti-corrosion applications.

引用

页数：21

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