管道用酚醛环氧树脂内涂层失效分析  

Pipeline Failure Analysis with Phenolic Epoxy Coating

作　　者：周斌葛[1] 何毅[1] 王雅诗[2] 周林[3] 

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]西南石油大学石油工程学院,四川成都610500 [3]西华大学材料科学与工程学院,四川成都610500

出　　处：《广东化工》2012年第7期7-8,32,共3页Guangdong Chemical Industry

摘　　要：使用电化学工作站中的交流阻抗实验、结合高温高压釜实验以及端口扫描电镜(SEM)分析技术,研究了酚醛环氧树脂管道内涂层在含饱和H2S/CO2的3.5%NaCl(质量分数)水溶液中不同温度下的失效规律。结果表明,在电化学交流阻抗测试中,随着温度(50℃、70℃、90℃)的升高,涂层失效减缓;在高温高压釜16 h实验后,涂层表观正常(未出现起泡、开裂、表面颜色无明显变化)、附着力良好;结合端口扫描电镜(SEM)技术,进一步证明温度升高会导致涂层在含H2S/CO2的3.5%NaCl溶液中失效减缓。Using AC impedance of electrochemical workstation, combined with autoclave experiment and SEM to study the pipeline failure at different temperatures with phenolic epoxy coating, which is immersed in the saturated H2S/CO2, 3.5 % NaCl（mass fraction）. The EIS shows that as the temperature（50 ℃, 70 ℃, 90℃ ）increases, the coating failure mitigation; 16 hours after the experiment in the autoclave, the coating apparent normal（does not appear blistering, cracking, no significant changes in surface color）, good adhesion; combination of SEM is further evidence that higher temperatures will lead to coating failure slow.

关 键 词：酚醛环氧涂层 涂层失效 交流阻抗 H2S/CO2 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]