摘要
合成了一种新型的噻唑类缓蚀润滑剂ACPP,并用红外光谱对产物进行了表征和分析。采用失重法、电化学方法等研究了ACPP在3%(质量分数)NaCl和15%HCl溶液中对N80钢的缓蚀性能,采用极压润滑仪评价了其在钻井液中的润滑性能和持效性,采用扫描电镜观察了表面形貌,探讨了缓蚀润滑机理。结果表明:在CO2饱和的3%NaCl溶液中,ACPP能将腐蚀控制在0.076 mm/a以下;在15%HCl溶液中,腐蚀速率能降低至3 g/(m^2·h);其使钻井液的润滑系数降低率达81.64%;研究表明ACPP是阳极型缓蚀剂,在N80钢上的吸附满足Langmuir等温式,缓蚀润滑机理主要表现为其在金属表面覆盖并生成了牢固致密的吸附膜。
A new thiazole derivative corrosion inhibiting lubricant (ACPP) was synthesized, and then characterized by IR. The corrosion inhibition property of ACPP on N80 carbon steel in acidic solution was studied by weight loss and electrochemical method. The lubrication performance and persistence in drilling fluid, as well as the morphology of adsorption film formed on the steel of ACPP were assessed by extreme pressure lubrication instrument and scanning electron microscopy. Results show that due to the addition of ACPP, the corrosion rate of N80 carbon steel may be lowered to less than 0.076 mm/a and to 3 g/(m^2·h) in CO2 saturated 3%NaCl solution and 15%HCl solution respectively;while the lubrication coefficient of the drilling fluid may be reduced by 81.64%. It follows that ACPP is an anodic corrosion inhibitor, meets the adsorption isotherm of Langmuir on N80 carbon steel. The excellent corrosion inhibition and lubrication behavior of ACPP may be ascribed to the formation of a well adhesive and compact adsorption film on the surface of N80 carbon steel.
作者
艾俊哲
王欢
段立东
AI Junzhe;WANG Huan;DUAN Lidong(College of Chemistry and Environmental Engineering,Yangtze University,Jingzhou 434023,China)
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2019年第5期501-507,共7页
Corrosion Science and Protection Technology
关键词
缓蚀润滑剂
噻唑
静态失重法
电化学方法
corrosion inhibitor and lubricant
thiazole
static masslessness method
electrochemical method
