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双层防腐涂层:具有超性和pH响应性行为的高级多功能涂层

Lijuan Zhu¹, Chun Feng¹, Pengao Yu^2,3

¹State Key Laboratory of Oil and Gas Equipment, Tubular Goods Research Institute of CNPC, Xi'an 710077, China.

Langmuir : the ACS journal of surfaces and colloids

|September 24, 2025

概括

研究人员开发了一种双层超水涂层,可以提供卓越的pH响应性腐蚀保护. 这种先进的抗腐蚀材料在恶劣环境中显著提高了基板的寿命.

科学领域:

材料科学材料科学材料科学
腐蚀科学腐蚀科学
表面化学表面化学

背景情况:

开发先进的涂层对于保护材料免受环境退化至关重要.
超疏水表面提供独特的保护性质,但往往缺乏响应性.
腐蚀抑制剂对于延长材料寿命至关重要,但它们的控制释放仍然是一个挑战.

研究的目的:

创建一个多功能,双层涂层,具有超疏水性和pH响应性.
通过封装腐蚀抑制剂的新型纳米容器系统来增强耐腐蚀性.
研究开发的涂层的长期性能和抑制剂释放机制.

主要方法:

用酸修改ZIF-8并加载2-amino-5-mercapto-1,3,4-thiadiazole (AMT) 来制造超水纳米容器.
使用刷刷和喷涂技术涂上双层涂层.
通过电化学阻抗光谱在3.5%重量NaCl溶液中评估抗腐蚀性能.
通过划痕试验和紫外线对光谱检测来验证抑制剂释放.

主要成果:

双层超水抗腐蚀涂层 (ZST/EP-S) 显示出异常的耐腐蚀性,在浸泡40天后保持高低频阻抗.
ZST/EP-S的阻抗值明显高于纯EP (4个数量级),高于ZST/EP1个数量级.
划伤测试和UV-vis实验证实了成功封装,并触发了腐蚀抑制剂AMT的释放.

结论:

开发的双层超性涂层表现出优异的长期腐蚀保护和pH响应性行为.
新型纳米容器设计有效封装并释放腐蚀抑制剂,提高整体性能.
这种智能涂层技术为腐蚀性环境中的先进材料保护提供了有前途的解决方案.

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