构建含有核心纳米纤维的智能涂层,具有自我愈合和积极的防腐蚀保护
Ruzheng Wang1, Lin Cao1, Wei Wang1
1School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China.
ACS applied materials & interfaces
|July 31, 2024
概括
这项研究开发了在聚合物外内含有腐蚀抑制剂 (8-基) 和治疗剂 (亚麻油) 的自我修复纳米纤维. 这些纳米纤维显著提高了对金属腐蚀的环氧涂层保护.
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:
- 金属腐蚀带来了重大挑战,推动了对先进保护涂层的需求.
- 高性能防腐蚀需要创新的解决方案,超越传统的方法.
研究的目的:
- 开发和评估用于增强环氧涂层腐蚀保护的自愈纳米纤维.
- 为了研究8-基林和亚麻油作为腐蚀抑制剂和愈合剂的协同作用.
主要方法:
- 同轴电制造聚乙醇 (PVA) 和酸盐 (CS) 核心外纳米纤维,封装8-基诺林 (8-HQ) 和亚麻油 (LO).
- 将PVA/CS@LO/8-HQ纳米纤维纳入环氧涂层.
- 电化学测试 (动态电位偏振,电化学阻抗光谱) 和表面分析 (扫描凯尔文探测器).
- 密度函数理论 (DFT) 计算以了解抑制剂吸附机制.
主要成果:
- PVA/CS@LO/8-HQ纳米纤维显示出有效的自主裂愈合和腐蚀抑制.
- 组合的LO + 8-HQ抑制系统在各种pH水平上实现了高的腐蚀抑制效率 (高达90.31%).
- DFT的计算证实了LO和8-HQ之间的结相互作用,增强了钢表面的吸附.
- 经过修改的环氧涂层表现出更好的机械性能和自我愈合的防腐蚀保护.
结论:
- 将PVA/CS@LO/8-HQ纳米纤维嵌入到环氧涂层中,可提供强大的自我愈合和增强的耐腐蚀性.
- 封装的腐蚀抑制剂和自我修复剂的协同作用,与单个剂相比,提供了更好的保护.
- 这种方法为开发具有先进功能的下一代保护涂层提供了有前途的战略.
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