Micron-scale ultrathin two-dimension zirconia nanosheets towards enhancing anticorrosion performance of epoxy coatings

IOCAS-IR

	Micron-scale ultrathin two-dimension zirconia nanosheets towards enhancing anticorrosion performance of epoxy coatings
	Xin-Ding Lv ; Hao-Tong Li ; Xiao-Gang Dai ; Xiang-Nan Sun ; Hai-Yong Zhang ; Yan-Zhen Zheng ; Xia Tao ; Li-Hui Yang
发表期刊	Tungsten
ISSN	2661-8028
	2021-10-14
出版年	2021
卷号	v.3 期号:04 页码:93-103
文献类型	CNKI期刊论文
摘要	Polymer nanocomposite coatings have attracted great interest in the anticorrosion fields due to their excellent properties. Nanofillers are necessary to achieve high anticorrosion performance of the polymer coating. Herein, we report a wet-chemical template strategy to prepare large-size ZrO_2 nanosheets, in which the Zr~(4+) ions are anchored on the surface of a graphene oxide template via electrostatic adsorption, followed by a thermal treatment process to remove graphene. Atomic force microscopy(AFM) and scanning electron microscopy(SEM) images show that the size and thickness of as-prepared ZrO_2 nanosheets are more than 2 μm and ～ 4.5 nm, respectively. The micron-scale ultrathin two-dimension(2 D) ZrO_2 nanosheets, for the first time, are utilized as the anticorrosive fillers in the epoxy coating to reduce the porosity, consequently promoting the gas and water barrier properties of the composite coating. The polymer coating containing 1.0 wt% ZrO _2 nanosheets shows a high initial impedance(89.1 GΩ·cm~2) that can protect the metal substrate from being corroded during long-term immersion(60 days), which is better than that of the reduced graphene oxide(rGO)-incorporated coating and the ZrO_2 nanoparticles-incorporated coating. This work offers valuable insights into the design and preparation of novel and efficient 2 D electric-inert nanofillers for anticorrosion coatings.
关键词	Zirconia Anticorrosion Nanosheet Epoxy coating
CNKI专辑号	B;
CNKI专辑名称	工程科技Ⅰ辑;
CNKI专题号	B022;
CNKI专题名称	金属学及金属工艺;
分类号	TG174.4
语种	英文;
资助项目(基金）	financially supported by National Natural Science Foundation of China (Grant Nos. 21476019 and 21676017)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187627
专题	中国科学院海洋研究所
作者单位	1.NavyCoatingsAnalysisandTestCenter 2.StateKeyLaboratoryofOrganic-InorganicComposites,BeijingUniversityofChemicalTechnology 3.ShandongKeyLaboratoryofCorrosionScience,InstituteofOceanology,ChineseAcademyofSciences
推荐引用方式 GB/T 7714	Xin-Ding Lv,Hao-Tong Li,Xiao-Gang Dai,et al. Micron-scale ultrathin two-dimension zirconia nanosheets towards enhancing anticorrosion performance of epoxy coatings. 2021.