多层LDH/微囊智能环氧涂层用于防腐蚀保护
Norhan Ashraf Ismail1,2, R A Shakoor1,3, Noora Al-Qahtani1
1Center for Advanced Materials, Qatar University, Doha 2713, Qatar.
ACS omega
|September 4, 2023
概括
开发了一种新型的双层环氧涂层,其中包括pH敏感的-层双氧化物 (Zn/Al LDH) 和自愈的酸尿素-甲微囊 (LAUFMC),用于增强碳钢的防腐蚀.
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:
- 碳钢的腐蚀带来了重大的经济和安全挑战.
- 开发先进的防护涂层对于延长材料寿命至关重要.
- 具有自我愈合和pH响应特性的智能涂层提供了有前途的解决方案.
研究的目的:
- 开发和表征一个多层智能环氧涂层,用于碳钢的优越防腐蚀.
- 研究结合pH敏感抑制剂和自我愈合剂的协同效应.
- 评估开发的涂层系统增强的耐腐蚀性和自我修复能力.
主要方法:
- 通过热水晶化合成载有多基胺的-层双氧化物 (Zn/Al LDH).
- 在现场的聚合制造以制造氨酸酸封装的尿素甲微囊 (LAUFMC).
- 制造双层环氧涂层 (DL-EP) 集成Zn/Al LDH和LAUFMC,以及单层和空白环氧控制,然后进行表征 (XRD,XPS,BET,TGA,FTIR,EIS) 和电化学测试.
主要成果:
- 合成的Zn/Al LDH和LAUFMC成功地被纳入了环氧基质.
- 电化学测试表明,双层环氧涂层 (DL-EP) 显示出明显改善的自我愈合特性.
- 在耐腐蚀性方面,DL-EP 性能优于单层涂层 (LDH-EP 和 UFMLA COAT) 和参考涂层.
结论:
- 开发的多层智能环氧涂层有效地提高了碳钢的防腐蚀性能.
- 对pH敏感的抑制和自我愈合机制的结合提供了卓越的保护性能.
- 这种智能涂层技术有可能用于先进的抗腐蚀应用.
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