A self-healing composite coating for CCUS: Synergistic anticorrosion and durability in harsh environments

IF 7.7 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES
Jialong Cui , Bin Du , Yue Sun , Zexi Shao , Luchao Pei , Xinyu Bu , Zhe Wang , Bin Liang , Yuzhou Liu , Ruitao Wang , Yanji Zhu , Huaiyuan Wang
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Abstract

Carbon Capture, Utilization and Storage (CCUS) technology emerges as a promising solution amid global efforts to mitigate emissions and enhance energy efficiency. However, within the CCUS framework, metal transport pipelines encounter significant corrosion challenges, particularly in high-pressure CO2 corrosion environments. Here, a novel composite filler was prepared by modifying α-ZrP nanosheets with tannic acid (TA) and octadecylamine (ODA), and then introduced into epoxy resin (EP) to obtain the self-healing multifunctional anti-corrosive coating named ZPO/EP. Compared to pure EP, it reduces CO2 and water vapor permeability by 69.77 % and 65.16 %, respectively, and the cohesion between the resin and filler has been significantly improved, resulting in a reduction of coating defects and enhancement in the adhesion between the coating and the metal substrate. Most importantly, the coating exhibits excellent long-term anti-corrosion performance under simulated CCUS conditions. After being exposed to these conditions for 30 days, its impedance value reaches 7.25×1010 Ω·cm2 at 0.01 HZ. Meanwhile, the polyphenol groups of the ZPO filler can chelate with Fe2+, endowing the coating with self-healing properties. This study offers an effective solution for corrosion protection of equipment in CCUS systems, which is crucial for promoting the large-scale application and sustainable development of CCUS technology.
用于CCUS的自修复复合涂层:在恶劣环境下的协同防腐和耐久性
碳捕获、利用和封存(CCUS)技术在全球减少排放和提高能源效率的努力中成为一种有前途的解决方案。然而,在CCUS框架内,金属运输管道面临着重大的腐蚀挑战,特别是在高压CO2腐蚀环境中。本文采用单宁酸(TA)和十八胺(ODA)对α-ZrP纳米片进行改性,制备了一种新型复合填料,并将其引入环氧树脂(EP)中,得到了自修复多功能防腐涂层ZPO/EP。与纯EP相比,CO2和水蒸气渗透率分别降低了69.77%和65.16%,树脂与填料之间的凝聚力得到了显著改善,从而减少了涂层缺陷,增强了涂层与金属基体之间的附着力。最重要的是,该涂层在模拟CCUS条件下表现出优异的长期防腐性能。在这些条件下暴露30天后,在0.01 HZ下其阻抗值达到7.25×1010 Ω·cm2。同时,ZPO填料的多酚基团可以与Fe2+螯合,使涂层具有自修复性能。本研究为CCUS系统中设备的防腐提供了有效的解决方案,对促进CCUS技术的规模化应用和可持续发展至关重要。
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来源期刊
Composites Communications
Composites Communications Materials Science-Ceramics and Composites
CiteScore
12.10
自引率
10.00%
发文量
340
审稿时长
36 days
期刊介绍: Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.
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