Preparation of Nitrogen and Phosphorus Co-doped Graphene Oxide and Corrosion Resistance of Waterborne Composite Coatings NPGO/Epoxy Resin

被引：0

作者：

Li, Yufeng ^{[1
,2
]}

Feng, Feng ^{[1
]}

Liu, Shibo ^{[1
]}

Liu, Lishuang ^{[1
]}

Gao, Xiaohui ^{[1
]}

机构：

[1] College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar

[2] College of Light Industry and Textile, Qiqihar University, Qiqihar

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2024年 / 38卷 / 11期

关键词：

composite coating; corrosion resistance; materials failure and protection; nitrogen-phosphorus graphene; waterborne epoxy resin;

D O I：

10.11901/1005.3093.2023.498

中图分类号：

学科分类号：

摘要：

N and P co-doped graphene oxide (NPGO) was prepared by low temperature solution method with graphene oxide (GO) as raw material, phytic acid (PA) as P source, and aqueous ammonia solution (NH3·H2O) as N source, and then, N and P co-doped graphene/epoxy resin (NPGO/EP) waterborne composite coating was prepared by using waterborne epoxy resin (EP) as the film former. The structure and morphology of NPGO were characterized by FTIR, XPS, XRD, SEM and TEM. The corrosion resistance of composite coatings was assessed by contact angle measurement, electrochemical measurement and salt spray test. The results show that NPGO/EP composite coating has better metal protection effect than pure EP coating, GO/EP composite coating, as well as single P doped graphene/epoxy resin (PGO/EP) composite coating and single N doped graphene/epoxy resin (NGO/EP) composite coating. NPGO/EP composite coating showing good corrosion resistance when the addition amount of NPGO is 1.5% (mass fraction): the electrochemical impedance reaches 4.85 × 108 Ω·cm2, and slight rust marks appear only after 480 h of salt spray test. © 2024 Chinese Journal of Materials Research. All rights reserved.

引用

页码：861 / 871

页数：10

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