含有2-Mercaptobenzimidazole-Zn2+-Polydopamine的高负荷智能载体具有pH响应功能,用于制造高性能水载环氧抗腐蚀涂料
Qiang Liu1,2, Hao Li1,2, Ling Kong3
1University of Science and Technology of China, Hefei 230026, China.
ACS applied materials & interfaces
|April 5, 2024
概括
开发了一种新的智能腐蚀抑制载体MZPG,用于长期保护金属. 这种响应pH的材料显著提高了环氧涂层的耐腐蚀性,即使在酸性环境中也是如此.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 腐蚀科学 腐蚀科学
背景情况:
- 腐蚀抑制剂对于金属保护至关重要,但随着时间的推移而降解.
- 开发持久,有效的腐蚀抑制仍然是一个挑战.
研究的目的:
- 设计和合成一个智能,pH响应的腐蚀抑制载体 (MZPG),以提高涂层性能.
- 评估MZPG装载环氧涂层的耐腐蚀性和机械性能.
主要方法:
- 一个合成的2-mercaptobenzimidazole-Zn2+-polydopamine@graphite (MZPG) 载体. 在一个合成.
- 通过喷涂来制备MZPG/环氧 (MZPG/EP) 涂层.
- 电化学试验和盐喷试验,以评估耐腐蚀性.
主要成果:
- MZPG表现出高负载能力 (38.0%) 和低的内在活动.
- MZPG/EP涂料表现出优越的机械性能和显著增强的耐腐蚀性 (Rp高达1.20 × 10^10 Ω·cm2).
- 涂料在酸性条件下保持了出色的耐腐蚀性,这是由于pH响应抑制剂的释放.
结论:
- 开发的MZPG载体为长期防腐蚀提供了一个有希望的解决方案.
- 用MZPG增强的环氧涂层适用于高度腐蚀的环境.
- 智能,响应pH值的载体代表了涂层技术的重大进步.
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