A bi-functional self-healing epoxy composite coating based on coordinated functionalized attapulgite/graphene oxide

doi:10.1016/j.apsusc.2024.161015

IMR OpenIR

	A bi-functional self-healing epoxy composite coating based on coordinated functionalized attapulgite/graphene oxide
	Ali, Mustehsin 1,2; Shi, Hongwei 1,2,3; Ahmed, Sharjeel 1,2; Song, Yingwei 1,2; Liu, Fuchun 1,2,4; Han, En-Hou 1,2,4; Iqbal, Sundas 5
通讯作者	Shi, Hongwei(hwshi@imr.ac.cn)
	2024-12-21
发表期刊	APPLIED SURFACE SCIENCE
ISSN	0169-4332
卷号	677 页码:13
摘要	Applications for graphene oxide (GO) in the field of corrosion protection will be severely constrained by the material's poor dispersion and compatibility with epoxy resins, as well as the absence of self-healing corrosion protection in GO-based epoxy coatings. In this work, we developed a bi-functional 2-mercaptobenzothiazole (MBT) inhibitor-encapsulating GO-based nanocomposite (GAM) with pH-responsive release by implanting attapulgite (ATP) nanorods on the surface of GO. Additionally, GO-based nanocomposite can form covalent connections with epoxy resins and be evenly distributed in epoxy film via a ring opening process. Moreover, improved epoxy film compatibility and dispersion result in elevated mechanical strength and better impermeability, which prevent corrosion in both the active and passive modes. The corrosion resistance of GAM selfhealing coating increased as the submersion period exceeded 24 h up to 0.54 M Omega cm2, resulting in the release of MBT inhibitor to form a passivation film at the defective region. Moreover, the improved charge transfer resistance (Rct) and the coating's resistance to corrosive species (Rc) attribute to the self-healing ability of the GAM coating. The incorporation of GAM (2 %) nanocomposites into epoxy films enables long-term protection of AA2024-T3 by combining passive and self-healing corrosion prevention.
关键词	Functional Filler Compatibility Graphene Oxide Nano-Clay Self-healing Corrosion
资助者	National Natural Science Foundation of China ; Key Program of Basic Research Projects of Liaoning Provincial Department of Education
DOI	10.1016/j.apsusc.2024.161015
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52171089] ; National Natural Science Foundation of China[51571202] ; Key Program of Basic Research Projects of Liaoning Provincial Department of Education[JYTZD2023114]
WOS研究方向	Chemistry ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001301537600001
出版者	ELSEVIER
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/189297
专题	中国科学院金属研究所
通讯作者	Shi, Hongwei
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 4.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China 5.Northwestern Polytech Univ, Ctr Nano Energy Mat, Sch Mat Sci & Engn, Xian 710072, Peoples R China
推荐引用方式 GB/T 7714	Ali, Mustehsin,Shi, Hongwei,Ahmed, Sharjeel,et al. A bi-functional self-healing epoxy composite coating based on coordinated functionalized attapulgite/graphene oxide[J]. APPLIED SURFACE SCIENCE,2024,677:13.
APA	Ali, Mustehsin.,Shi, Hongwei.,Ahmed, Sharjeel.,Song, Yingwei.,Liu, Fuchun.,...&Iqbal, Sundas.(2024).A bi-functional self-healing epoxy composite coating based on coordinated functionalized attapulgite/graphene oxide.APPLIED SURFACE SCIENCE,677,13.
MLA	Ali, Mustehsin,et al."A bi-functional self-healing epoxy composite coating based on coordinated functionalized attapulgite/graphene oxide".APPLIED SURFACE SCIENCE 677(2024):13.