Rigid-flexible coupled 3D cross-linked network structure functional coating for corrosion resistance in harsh HPHT-CO2 environments

IF 7.4 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2025-06-01 Epub Date: 2025-02-25 DOI:10.1016/j.corsci.2025.112826
Min Gao , Chijia Wang , Weihao Fan , Haonan Liu , Yue Sun , Qianqian Yin , Zihua Wang , Zhanjian Liu , Ruitao Wang , Huaiyuan Wang
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Abstract

A novel three-dimensional cross-linked network structure is constructed in epoxy coatings through numerous chemical reactions within fillers and between filler and resin. The organic combination between fillers, resins and curing agents improves the coating compactness, the dense and stable "3D network" can effectively shield the CO2 corrosion. Additionally, the excellent toughness of flexible Polyamide modified with polydopamine and the outstanding strength of rigid MoS2 modified with KH560 significantly improve the wear resistance, impact resistance and thermal stability of coating. The EIS results obtain under CO2 environments indicated the mixed coating impedance is approximately 1000 times higher than ordinary coating.
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刚性-柔性耦合三维交联网络结构功能涂层在高温高温-二氧化碳恶劣环境中的耐腐蚀性能
通过填料内部和填料与树脂之间的化学反应,在环氧涂料中构建了一种新型的三维交联网络结构。填料、树脂和固化剂之间的有机结合提高了涂层的密实度,致密稳定的“3D网络”能有效屏蔽CO2腐蚀。此外,聚多巴胺改性柔性聚酰胺的优异韧性和KH560改性刚性二硫化钼的优异强度显著提高了涂层的耐磨性、抗冲击性和热稳定性。CO2环境下的EIS结果表明,混合涂层的阻抗约为普通涂层的1000倍。
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来源期刊
Corrosion Science
Corrosion Science 工程技术-材料科学:综合
CiteScore
13.60
自引率
18.10%
发文量
763
审稿时长
46 days
期刊介绍: Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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