改性2-氨基嘧啶型转锈剂的制备及其在带锈涂层中的防腐蚀效果
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摘要
将接枝不同脂肪酸的2-氨基嘧啶作为转锈剂与环氧-聚乙烯醇缩丁醛(EP-PVB)配合制成带锈涂层,并通过扫描电镜(SEM)和电化学测试对涂层形貌和耐蚀性进行观察与测试。结果表明:转锈剂可在锈层表面形成一层自组装膜,膜层的形貌与接枝使用的脂肪酸碳链长度相关,用月桂酸接枝的2-氨基嘧啶转锈剂成膜性最佳;转锈剂与EP-PVB配合制成带锈涂层的防蚀腐效果受转锈剂成膜性的影响,用月桂酸接枝改性的2-氨基嘧啶转锈剂与EPPVB配合涂装的带锈涂层的耐蚀性最佳。
2-aminopyrimidines grafted with different fatty acids were used as rust converters in combination with epoxy-polyvinylbutyral(EP-PVB)in preparing rust-tolerant anti-corrosive coatings.The morphology and corrosion resistance of the coatings were observed and tested by scanning electron microscopy(SEM)and electrochemical tests.The results show that rust converters formed self-assembled coatings whose morphology was related to the carbon chain length of fatty acids on the surface of rust layer.The film formation property of lauric acid grafted with 2-aminopyrimidine was best.The anti-corrosion performance of the rust-tolerant anti-corrosive coatings prepared by rust converters and EP-PVB was affected by film formation property of rust converters.The rust-tolerant anticorrosive coating prepared by 2-aminopyrimidine grafted with lauric acid exhibited the best corrosion resistance.
2-aminopyrimidines grafted with different fatty acids were used as rust converters in combination with epoxy-polyvinylbutyral(EP-PVB)in preparing rust-tolerant anti-corrosive coatings.The morphology and corrosion resistance of the coatings were observed and tested by scanning electron microscopy(SEM)and electrochemical tests.The results show that rust converters formed self-assembled coatings whose morphology was related to the carbon chain length of fatty acids on the surface of rust layer.The film formation property of lauric acid grafted with 2-aminopyrimidine was best.The anti-corrosion performance of the rust-tolerant anti-corrosive coatings prepared by rust converters and EP-PVB was affected by film formation property of rust converters.The rust-tolerant anticorrosive coating prepared by 2-aminopyrimidine grafted with lauric acid exhibited the best corrosion resistance.
引文
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[2]杨印臣.带锈涂料及其应用[J].腐蚀与防护,1997,18(6):22-24.
[3]HUANG A H,ZHOU Y J,HE W.A combination of self-assembled monolayer and hydrophobic conformal coating for anti-corrosion of Cu/NiP/Au 3Dcircuitry in artificial sweat solution[J].Surface&Coatings Technology,2017,320:126-131.
[4]HANCER M.The effect of humidity on the stability of octadecyltrichlorosilane for the self-assembled monolayer coating applications[J].Progress in Organic Coatings,2008,63:395-398.
[5]ARIANPOUR F,FARZANEH M,JAFARI R.Hydrophobic and ice-phobic properties of self-assembled monolayers(SAMs)coatings on AA6061[J].Progress in Organic Coatings,2016,93:41-45.
[6]古绪鹏,陈同云,姚文锐.环保型水溶性带锈防锈涂料的研制[J].腐蚀与防护,2002,23(2):63-65.
[7]吴贤冠.带锈涂料及其应用[J].涂料涂装与电镀,2003(1):34-36.
[8]张学敏,章厚盛,孙岩,等.环氧带锈涂料的研究[J].材料保护,1999,32(1):13-15.
[9]吴小芳.国内外带锈涂料的发展概况[J].上海涂料,2000(1):28-30.
[10]DAYAB M A,OUARSAL R,ALSABAGH A M,et al.Enhancement of corrosion protection performance of epoxy coating by introducing new hydrogenphosphate compound[J].Progress in Organic Coatings,2017,107:37-42.
[11]MONTAZERI S,RANJBAR Z,RASTEGAR S.Astudy on effects of viscoelastic properties on protective performance of epoxy coatings using EIS[J].Progress in Organic Coatings,2017,111:248-257.
[12]LIU J,ZHANG L W,MU X L,et al.Studies of electrochemical corrosion of low alloy steel under epoxy coating exposed to natural seawater using the WBEand EIS techniques[J].Progress in Organic Coatings,2017,111:345-321.
[13]SRISOMBAT L,JAMISON A C,LEE T R.Stability:a key issue for self-assembled monolayers on gold as thin-film coatings and nanoparticle protectants[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2011,390:1-19.
[14]杜克敏.带锈涂料现状及其发展趋势[J].上海涂料,2010(1):33-37.
[15]ANDREAS W M,SASCHA B,PETER P,et al.Edge coverage of organic coatings and corrosion protection over edges under simulated ballast water tank conditions[J].Progress in Organic Coatings,2017,108:90-92.
[16]黄河,马道林,张丽,等.水性带锈转锈涂料最新研究进展[J].现代涂料与涂装,2010,13(10):33-36.
[17]吕钊,李伟华,宗成中.一种环氧带锈底漆的研制[J].腐蚀与防护,2011,32(9):728-730.
[18]CAI L,LIU A Q,YUAN Y H,et al.Self-assembled perfluoroalkylsilane films on silicon substrates for hydrophobic coatings[J].Progress in Organic Coatings,2017,102:247-258.
[19]WANG N,ZHANG Y,CHEN J S,et al.Dopamine modified metal-organic frameworks on anti-corrosion properties of waterborne epoxy coating[J].Progress in Organic Coatings,2017,109:126-134.