二维金属有机框架/环氧复合涂层,具有优越的O2/H2O抗腐蚀应用的抗腐蚀性
Hao-Hsuan Hsia1,2, You-Liang Chen3, Yu-Ting Tai3,4
1Department of Chemical Engineering, R&D Center for Membrane Technology, Research Center for Circular Economy, Chung Yuan Christian University, Taoyuan 32023, Taiwan.
ACS applied materials & interfaces
|July 12, 2024
概括
这项研究引入了一个新的2D基金属有机框架 (Zr-MOF) 添加剂用于环氧涂层,显著提高了钢的防腐蚀保护. 这种新型复合材料涂层表现出优异的疏水和抗氧性能,降低了四个数量级的腐蚀率.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 纳米技术 纳米技术
背景情况:
- 防腐蚀保护对于基础设施的寿命和安全至关重要.
- 环氧涂层被广泛使用,但可以改进以提高耐用性.
- 二维 (2D) 金属有机框架 (MOF) 为材料增强提供了新的特性.
研究的目的:
- 调查2D水稳定基MOF (Zr-MOFs) 作为环氧涂料中的添加剂的抗腐蚀机制.
- 合成和描述一个特定的2D Zr-MOF (BA-ZrBTB),并评估其在环氧复合材料中的性能.
- 探索2D Zr-MOF材料在先进防腐蚀应用中的潜力.
主要方法:
- 使用酸作为调节器合成2D Zr-MOF (BA-ZrBTB).
- 在冷钢 (CRS) 上制备BA-ZrBTB/环氧复合涂层.
- 涂层性能的表征,包括粗性,疏水性 (水接触角) 和耐腐蚀性,通过测量腐蚀速率和氧气扩散分析.
主要成果:
- BA-ZrBTB/环氧涂层表现出较低的表面粗度 (2.83 nm) 和高的疏水性 (99.8°水接触角).
- 复合材料涂层的腐蚀率显著降低 (2.28 × 10−3 mpy),比CRS基板低四个数量级.
- 复合涂层显示氧气扩散的能量屏障增加,这表明与纯环氧涂层相比,氧气阻力增强.
结论:
- 合成的2D Zr-MOF (BA-ZrBTB) 是一种高效的添加剂,可以提高环氧涂料的抗腐蚀性能.
- 由BA-ZrBTB传递的疏水和耐氧性质有助于优越的防腐保护.
- 这项研究开创了2D Zr-MOF材料在抗腐蚀涂料中的应用,为材料开发开辟了新的途径.
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