用于提高水性环氧涂层耐腐蚀和耐磨性能的 SiN-NH@GO 层-点结构

Layer-Point Structure of SiN-NH@GO for Improving Corrosion and Wear Resistance of Waterborne Epoxy Coating.

作者信息

Zhang Jing, Li Changhua, Zhang Xiaofeng, Chen Hao, Gou Rui, Zhang Chao, Sun Dan, He Yi

机构信息

College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, People's Republic of China.

National Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, People's Republic of China.

出版信息

Langmuir. 2024 Jul 17. doi: 10.1021/acs.langmuir.4c01781.

DOI:10.1021/acs.langmuir.4c01781

PMID:39019028

Abstract

The use of graphene-based materials as anticorrosion coatings to protect metals is always a topic of discussion. In this work, silicon nitride (SiN) was aminated to improve its water dispersibility. Then it is attached to the graphene oxide (GO) surface to improve compatibility with epoxy (EP) resin as well as conductivity. The results of Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and zeta potentials test analyses indicated that SiN-NH@GO with a layer-point structure has been successfully prepared. The corrosion resistance of the composite coatings was characterized by electrochemical impedance spectroscopy (EIS) and polarization curve analysis, and the wear resistance of the composite coatings was tested by friction and wear tests. The results showed that 1.0% SiN-NH@GO has excellent corrosion and wear resistance. The use of SiN-NH@GO layer point structures in this study broadens the way for GO applications.

摘要

使用基于石墨烯的材料作为防腐涂层来保护金属一直是一个讨论的话题。在这项工作中，对氮化硅（SiN）进行胺化以提高其水分散性。然后将其附着在氧化石墨烯（GO）表面，以提高与环氧树脂（EP）的相容性以及导电性。傅里叶变换红外（FTIR）光谱、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）和zeta电位测试分析结果表明，已成功制备出具有层状结构的SiN-NH@GO。通过电化学阻抗谱（EIS）和极化曲线分析对复合涂层的耐腐蚀性进行了表征，并通过摩擦磨损试验测试了复合涂层的耐磨性。结果表明，1.0%的SiN-NH@GO具有优异的耐腐蚀和耐磨性能。本研究中SiN-NH@GO层状结构的使用拓宽了GO的应用途径。