一种具有智能耐腐蚀的水性环氧复合涂层,基于2-二胺-5-硫酸/多层双氧化物复合材料
Caiyou Ding1, Jiongxin Wu2, Yuan Liu1
1Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
Molecules (Basel, Switzerland)
|July 14, 2023
概括
一种新的ZnAl-PBSA-LDH材料显示出出色的腐蚀抑制. 当添加到以水为基础的环氧涂层时,它显著提高了抗腐蚀性能,提供了长时间的保护.
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:
- 层状双氧化物 (LDHs) 是有效的腐蚀抑制剂.
- 环氧涂层广泛用于防腐蚀保护.
- 开发先进的抗腐蚀材料对于延长材料寿命至关重要.
研究的目的:
- 为了合成和描述ZnAl-PBSA-LDH.
- 评估ZnAl-PBSA-LDH在溶液和水基环氧涂料中的防腐性能.
- 为了证明功能化的LDHs作为高性能抗腐蚀添加剂的潜力.
主要方法:
- 一步合成ZnAl层的双氧化物,其功能化与2-phenylbenzimidazole-5-sulfonic acid (ZnAl-PBSA-LDH) 相结合.
- 电化学阻抗光谱 (EIS) 用于评估溶液中的腐蚀抑制.
- 将 ZnAl-PBSA-LDH 纳入以水为基础的环氧氧化物 (WEP),以形成抗腐蚀涂层 (6-ZPL/WEP).
- 长期浸泡试验 (30天) 与涂层样本的EIS分析.
主要成果:
- 在溶液相试验中,ZnAl-PBSA-LDH表现出极好的腐蚀抑制.
- 与空白涂层相比,6-ZPL/WEP涂层表现出优越的抗腐蚀性能.
- 浸泡30天后,6-ZPL/WEP涂层的阻抗模量仍然显著高,表明持续保护.
- 功能化的LDH有效地提高了水基环氧涂层的耐腐蚀性.
结论:
- ZnAl-PBSA-LDH是一种高效的腐蚀抑制剂.
- 将ZnAl-PBSA-LDH纳入水性环氧涂层可以显著提高其抗腐蚀能力.
- 这项研究强调了功能化的LDHs在开发先进的抗腐蚀涂料方面的潜力.
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