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

被引：3
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.
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页数：21
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