近海大气腐蚀环境下纳米TiO_(2)改性环氧富锌涂料的耐蚀性研究  

Study on the Corrosion Resistance of Nano-TiO_(2) Modified Epoxy Zinc-Rich Coating in Offshore Atmospheric Corrosive Environment

作　　者：于俊峰[1] 刘瑾[2] 修长军 王凯[2] 李民强[1] 王遂平 张英凯[2] 李春玲 YU Jun-feng;LIU Jin;XIU Chang-jun;WANG Kai;LI Min-qiang;WANG Sui-ping;ZHANG Ying-kai;LI Chun-ling(Offshore Oil Production Plant,Shengli Oilfield Co.,Ltd.,Dongying 257237,China;Technology Testing Center,Shengli Oilfield Co.,Ltd.,Dongying 257237,China;Branch,Shengli Oilfield Co.,Ltd.,Dongying 257237,China;Testing and Evaluation,Shengli Oilfield Co.,Ltd.,Dongying 257237,China;School of Materials Science and Engineering,China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]胜利油田海洋采油厂,山东东营257237 [2]胜利油田技术检测中心,山东东营257237 [3]胜利油田分公司,山东东营257237 [4]胜利油田检测评价有限公司,山东东营257237 [5]中国石油大学(华东)材料科学与工程学院,山东青岛266580

出　　处：《材料保护》2021年第11期63-68,共6页Materials Protection

基　　金：海洋物探及勘探设备国家工程实验室开放基金(20CX02311A)资助。

摘　　要：为了提高环氧富锌涂料的耐腐蚀性,制备了不同掺杂量、不同涂层厚度纳米TiO_(2)改性环氧富锌涂料。采用盐雾试验以及电化学阻抗谱(EIS)测试了不同的涂层在3.5%(质量分数,下同)的NaCl溶液中的耐蚀性能。结果表明:随着纳米TiO_(2)掺杂量的增加,涂层的耐蚀性能先提高再降低;涂层耐蚀性随涂层厚度的增加先提高后降低;随着试验温度的增加,涂层的耐蚀性降低,在纳米TiO_(2)掺杂量为1%(质量分数,下同)、涂层厚度在150μm左右、试验温度在25℃左右时,涂层的耐蚀性能最好。研究结果为新型纳米复合环氧富锌涂料的开发及改性提供了技术支持。Aiming at improving the corrosion resistance of epoxy zinc-rich coatings,nano-TiO_(2) modified epoxy zinc-rich coatings with different doping amounts and thicknesses were prepared.Salt spray test and electrochemical impedance spectroscopy(EIS)were used to evaluate the corrosion resistance of different coatings in 3.5%(mass fraction,the same below)NaCl solution.Results showed that the corrosion resistance of the coating firstly increased and then decreased with the increase of nano-TiO_(2)doping content.The corrosion resistance of the coating increased firstly and then decreased with the increase of the coating thickness.Moreover,with the increase of the test temperature,the corrosion resistance of the coating decreased.When the doping conditions were 1%(mass fraction)of the nano-TiO_(2)doping amount,about 150μm of the coating thickness and about 25℃of the test temperature,the as-prepared coating possessed the optimal corrosion resistance.These research results provided technical support for the development and modification of new nano composite epoxy zinc-rich coatings.

关 键 词：纳米TiO_(2) 环氧富锌涂料 盐雾试验 耐蚀性 

分 类 号：TU561.67[建筑科学—建筑技术科学]