多巴胺改性氧化石墨烯对环氧富锌涂层性能的影响
Effect of Dopamine Modified GO on Properties of Epoxy Zinc-Rich Coatings
摘 要
利用多巴胺(DA)对氧化石墨烯(GO)进行还原与改性得到DA-rGO纳米复合材料并添加到环氧富锌涂料中,制备了一种新型的DA-rGO/环氧富锌防腐蚀涂层。通过傅里叶红外光谱仪(FT-IR)、X射线衍射仪(XRD)等对DA-rGO纳米复合材料进行了表征,并对涂层的耐冲击性、硬度、附着力等物理性能,电化学性能和耐盐雾腐蚀性能进行了测试。结果表明:当DA-rGO的添加量为1%时,涂层的耐冲击性、硬度等物理性能达到最佳,且此时涂层具有最低的腐蚀电流密度与最高的腐蚀电位,防腐蚀效果最好。
氧化石墨烯
物理性能
防腐蚀性能
dopamine
graphene oxide
physical property
corrosion resistance
Abstract
DA-rGO nano composites were obtained by the reduction and modification of graphene oxide (GO) with dopamine (DA), and were added into epoxy zinc-rich coating to prepare a new DA-rGO/epoxy zinc-rich anticorrosive coating. The DA-rGO nano composites were characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The physical properties including impact resistance, hardness, adhesion of the coating as well as it electrochemical properties and salt-spray corrosion resistance were tested. The test results show that when the dosage of DA-rGO was 1%, the impact resistance, hardness and other physical properties of the coating reached the best, meanwhile the coating had the lowest corrosion current density and the highest corrosion potential, showing best corrosion resistance.
中图分类号 TG174 DOI 10.11973/fsyfh-202208001
所属栏目 试验研究
基金项目 国家自然科学基金(5117605);江苏省重点实验室开放基金(312035);常州市科技计划(CE20160069);常州市应用基础研究(CJ20200085)
收稿日期 2020/10/14
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联系人作者王树立(wsl@cczu.edu.cn)
引用该论文: ZHAO Shuhua,CUI Jiawei,DUAN Yunfei,WANG Shuli,ZHU Jiankang,RAO Yongchao. Effect of Dopamine Modified GO on Properties of Epoxy Zinc-Rich Coatings[J]. Corrosion & Protection, 2022, 43(8): 1
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【4】GERGELY A,PFEIFER É,BERTÓTI I,et al.Corrosion protection of cold-rolled steel by zinc-rich epoxy paint coatings loaded with nano-size alumina supported polypyrrole .Corrosion Science,2011,53(11):3486-3499.
【5】SHAO Y W,JIA C,MENG G Z,et al.The role of a zinc phosphate pigment in the corrosion of scratched epoxy-coated steel .Corrosion Science,2009,51(2):371-379.
【6】SHREEPATHI S,BAJAJ P,MALLIK B P.Electrochemical impedance spectroscopy investigations of epoxy zinc rich coatings:role of Zn content on corrosion protection mechanism .Electrochimica Acta,2010,55(18):5129-5134.
【7】YANG F,LIU T,LI J Y,et al.Anticorrosive behavior of a zinc-rich epoxy coating containing sulfonated polyaniline in 3.5% NaCl solution .RSC Advances,2018,8(24):13237-13247.
【8】MARCHEBOIS H,TOUZAIN S,JOIRET S,et al.Zinc-rich powder coatings corrosion in sea water:influence of conductive pigments .Progress in Organic Coatings,2002,45(4):415-421.
【9】ZHOU S G,WU Y M,ZHAO W J,et al.Designing reduced graphene oxide/zinc rich epoxy composite coatings for improving the anticorrosion performance of carbon steel substrate .Materials & Design,2019,169:107694.
【10】LI W B,SHANG T H,YANG W G,et al.Effectively exerting the reinforcement of dopamine reduced graphene oxide on epoxy-based composites via strengthened interfacial bonding .ACS Applied Materials & Interfaces,2016,8(20):13037-13050.
【11】RAMEZANZADEH B,NIROUMANDRAD S,AHMADI A,et al.Enhancement of barrier and corrosion protection performance of an epoxy coating through wet transfer of amino functionalized graphene oxide .Corrosion Science,2016,103:283-304.
【12】RICHARD PRABAKAR S J,HWANG Y H,BAE E G,et al.Graphene oxide as a corrosion inhibitor for the aluminum current collector in lithium ion batteries .Carbon,2013,52:128-136.
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【14】HAYATDAVOUDI H,RAHSEPAR M.A mechanistic study of the enhanced cathodic protection performance of graphene-reinforced zinc rich nanocomposite coating for corrosion protection of carbon steel substrate .Journal of Alloys and Compounds,2017,727:1148-1156.
【15】赵书华,陈宏,王树立,等.石墨烯对硅酸盐富锌防腐蚀涂层性能的影响 .腐蚀与防护,2018,39(12):930-935,940.
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【22】KAMINSKA I,DAS M R,COFFINIER Y,et al.Reduction and functionalization of graphene oxide sheets using biomimetic dopamine derivatives in one step .ACS Applied Materials & Interfaces,2012,4(2):1016-1020.
【23】HAN X F,ZHANG L,LI C Z.Preparation of polydopamine-functionalized graphene-Fe3O4 magnetic composites with high adsorption capacities .RSC Adv,2014,4(58):30536-30541.
【24】WEI Y,HU X Y,JIANG Q R,et al.Influence of graphene oxide with different oxidation levels on the properties of epoxy composites .Composites Science and Technology,2018,161:74-84.
【25】TENG S,GAO Y,CAO F L,et al.Zinc-reduced graphene oxide for enhanced corrosion protection of zinc-rich epoxy coatings .Progress in Organic Coatings,2018,123:185-189.
【26】SUN W,WANG L D,WU T T,et al.Synthesis of low-electrical-conductivity graphene/pernigraniline composites and their application in corrosion protection .Carbon,2014,79:605-614.
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