氮磷共掺杂石墨烯的制备及水性复合涂层的耐蚀性能

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

李玉峰 ¹冯峰 ²刘世博 ²刘丽爽 ²高晓辉²

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作者信息

1. 齐齐哈尔大学化学与化学工程学院齐齐哈尔 161006;齐齐哈尔大学轻工与纺织学院齐齐哈尔 161006
2. 齐齐哈尔大学化学与化学工程学院齐齐哈尔 161006
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摘要

以氧化石墨烯(GO)为原料,植酸(PA)为磷源,氨水(NH3·H2O)为氮源,采用低温溶液法制备氮磷石墨烯(NPGO),并以水性环氧树脂(EP)为成膜物制备氮磷石墨烯/环氧树脂(NPGO/EP)水性复合涂层.采用FTIR、XPS、XRD、SEM和TEM对NPGO的结构、形貌进行了表征.通过接触角测试、电化学测试和盐雾实验等研究复合涂层的耐蚀性能.结果表明:相比于EP涂层、GO/EP复合涂层、含磷石墨烯/环氧树脂(PGO/EP)复合涂层和含氮石墨烯/环氧树脂(NGO/EP)复合涂层,NPGO/EP复合涂层对金属的保护作用更好;当NPGO的添加量为1.5％(质量分数)时,电化学阻抗达到4.85 × 108Ω·cm2,盐雾实验480 h后才出现轻微腐蚀,表现出较好的防腐蚀性能.

Abstract

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)water-borne composite coating was prepared by using waterbome epoxy resin(EP)as the film former.The structure and morphology of NPGO were characterized by FTIR,XPS,XRD,SEM and TEM.The corro-sion 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/ep-oxy 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.

关键词

材料失效与保护/耐蚀性能/氮磷石墨烯/水性环氧树脂/复合涂层

Key words

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

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出版年

2024

材料研究学报

国家自然科学基金委员会中国材料研究学会

材料研究学报

CSTPCDCSCD北大核心

影响因子：0.605

ISSN：1005-3093

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