A polyurea capturing both high strength and rapid self-healing tailored for intelligent barrier anti-corrosion system

被引：14
作者：
Wang, Lin [1 ]
Zhang, Jingyi [1 ]
Sun, Fuyao [1 ]
Liu, Tong [1 ]
Wang, Qiang [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：
CORROSION SCIENCE | 2024年 / 240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：
Ti (3) C (2) T (x) MXene; Synergistic effect; Self-healing; Corrosion protection; Polyurea coating; AMINO-FUNCTIONALIZED TI3C2TX; ACTIVE CORROSION PROTECTION; MXENE; PERFORMANCE; COATINGS; TOUGH; STIFF; BENZOTRIAZOLE; ELASTOMER; IMPEDANCE;
D O I：
10.1016/j.corsci.2024.112395
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The long-term repair of organic coatings in underwater environments is hindered by microcracks and their poor healing performance. In this study, a high-strength and rapidly self-healing polyurea (PU3) coating that combines asymmetric dense stacking of supramolecular units with mismatched rigid and flexible polymer chains was developed. By exploiting the interaction between a 2D sheet-like Ti3C2TX MXene and finely tailored hydrogen-bonded structures of PU3, a smart biomimetic anticorrosion composite coating (PU3-1.0 wt% MXene) was produced. This coating achieved rapid (15 s), specific, and repeatable in situ repair underwater when exposed to near infrared laser light. Electrochemical tests confirmed its excellent anticorrosion capability.
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页数：18
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