玻璃纤维和硫脲缓蚀剂对涂层缓蚀行为的影响
Effects of Glass Fiber and Thiourea Inhibitor on Inhibition Behavior of Composite Coating
摘 要
制备了含0.3%(质量分数)玻璃纤维和不同量硫脲缓蚀剂的复合涂层，采用扫描电镜(SEM)方法表征了玻璃纤维和硫脲缓蚀剂在涂层中的分布特点和分散效果。采用电化学阻抗谱研究了玻璃纤维和硫脲缓蚀剂对复合涂层缓蚀行为的影响，利用EDS技术表征涂层缺陷处的元素分布。结果表明：玻璃纤维不仅能提高涂层的防护性能，还能作为缓蚀剂的载体，增加其长期防护性能。相对于空白涂层，含有玻璃纤维和硫脲缓蚀剂的涂层的膜电阻明显上升，膜电容显著降低，涂层的使用寿命延长。中间漆中玻璃纤维的质量分数为0.3%，硫脲缓蚀剂的质量分数为0.6%时，复合涂层对Q235碳钢的防护性能最佳。
硫脲缓蚀剂
电化学阻抗谱
涂层
glass fiber
thiourea inhibitor
EIS
coating
Abstract
Composite coatings containing 0.3% (mass) glass fiber and different contents of thiourea inhibitor were prepared. SEM was used to characterize the distribution character and dispersion effects of glass fiber and thiourea inhibitor in the coating. EIS was used to investigate the effects of glass fiber and thiourea inhabitor on inhibition behavior of the coating. EDS was used to characterize the element distribution in defect position of the coating. The results showed that the composite coating containing glass fiber and thiourea inhibitor had higher Rc , lower Qc and longer service life than blank coating. When adding 0.3% glass fiber and 0.6% thiourea inhibition to intermediate coating, the composite coating exhibited the best protection performance to Q235 steel.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201611005
所属栏目 试验研究
基金项目 宁波材料所海洋新材料重点实验室开放课题(LMMT-KFKT-2014-008)
收稿日期 2015/7/13
修改稿日期
网络出版日期
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联系人作者赵霞(zx@qdio.ac.cn)
备注赵霞(1978-),助理研究员,博士,从事海洋腐蚀与防护的研究,
引用该论文: CHEN Chang-wei,ZHAO Xia,JIN Zu-quan,HOU Bao-rong. Effects of Glass Fiber and Thiourea Inhibitor on Inhibition Behavior of Composite Coating[J]. Corrosion & Protection, 2016, 37(11): 881
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【5】WANG H,AKID R. Encapsulated cerium nitrate inhibitors to provide high-performance anti-corrosion sol-gel coatings on mild steel[J]. Corrosion Science,2008,50(4):1142-1148.
【6】HOSSEINI S,JAFARI A,Jamalizadeh E. Self-healing corrosion protection by nanostructure sol-gel impregnated with propargyl alcohol[J]. Electrochimica Acta,2009,54(28):7207-7213.
【7】TAVANDASHTI N,SANJABI S. Corrosion study of hybrid sol-gel coatings containing boehmite nanoparticles loaded with cerium nitrate corrosion inhibitor[J]. Progress in Organic Coatings,2010,69(4):384-391.
【8】KAKAROGLOU A,NISOL B,T HAUFFMAN,et al. Incorporation of corrosion inhibitor in plasma polymerized allyl methacrylate coatings and evaluation of its corrosion performance[J]. Surface and Coatings Technology,2014,259:714-724.
【9】GITE V,TATIYA P,MARATHE R,et al. Microencapsulation of quinoline as a corrosion inhibitor in polyurea microcapsules for application in anticorrosive PU coatings[J]. Progress in Organic Coatings,2015,83:11-18.
【10】窦贤飞,邓淑珍,黎完模,等. 铁红-酚醛船底漆中缓蚀剂的研究[J]. 腐蚀与防护,1997,18(3):16-19.
【11】ZHANG K,WANG L,SUN W,et al. Corrosion inhibitor embedded spherical micro-pits fabricated using cetyltrimethyl ammonium bromide as etching template for self-healing corrosion protection[J]. Corrosion Science,2014,88:444-451.
【12】WANG W,XU L,LI X,et al. Self-healing properties of protective coatings containing isophorone diisocyanate microcapsules on carbon steel surfaces[J]. Corrosion Science,2014,80:528-535.
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【15】曹楚南. 腐蚀电化学原理[M]. 北京:化学工业出版社,2008:175-193.
【16】CHENG Y,ZHANG Z,CAO F,et al. A study of the corrosion of aluminum alloy 2024-T3 under thin electrolyte layers[J]. Corrosion Science,2004,46(7):1649-1667.
【17】MORRIS W,VZQUEZ M. A migrating corrosion inhibitor evaluated in concrete containing various contents of admixed chlorides[J]. Cement and Concrete Research,2002,32(2):259-267.
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