pH响应型可降解纳米容器的制备及防腐性能  

Preparation and Anti-corrosion Properties of pH-responsive Degradable Nanocontainers

作　　者：刘冬梅 石鑫[1,2] 杨康 魏晓静[1,2] 贾犇 王文栋 LIU Dongmei;SHI Xin;YANG Kang;WEI Xiaojing;JIA Ben;WANG Wendong(Research Institute of Engineering Technology,Northwest Oilfield Branch Company,Sinopec,Urumqi,Xinjiang 830011,P R of China;Key Laboratory of Enhanced Oil Recovery in Carbonate Fractured-vuggy Reservoirs,Sinopec,Urumqi,Xinjiang 830011,P R of China;School of Materials Science and Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,P R of China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司工程技术研究院,新疆乌鲁木齐830011 [2]中国石油化工集团公司碳酸盐岩缝洞型油藏提高采收率重点实验室,新疆乌鲁木齐830011 [3]中国石油大学(华东)材料科学与工程学院,山东青岛266580

出　　处：《油田化学》2021年第3期529-535,共7页Oilfield Chemistry

摘　　要：为了合成快速响应的纳米容器,实现缓蚀剂靶向释放,更好地解决油气田管道金属进一步腐蚀的状况,采用修饰的Stöber法,改变无机和有机硅源的摩尔比合成了不同亚胺嵌入的有机硅纳米颗粒(S-SNPs)并负载缓蚀剂MBT得到了智能缓蚀剂MBT@S-SNPs,并研究其智能防腐性能。研究结果表明,S-SNPs在中性环境下稳定,而在酸性环境下发生降解,从而可以实现对缓蚀剂的控释。另外,电化学测试结果表明含有智能缓蚀剂腐蚀试样的阻抗值为空白试样的5倍,有效缓解了腐蚀的发生。S-SNPs的响应降解以及与缓蚀剂之间的相互作用实现了缓蚀剂的高效负载(16%)和pH响应释放。S-SNPs可响应腐蚀引起的pH变化,在腐蚀的靶向修复方面具有广阔应用前景。In order to achieve targeted release of corrosion inhibitors,and solve the situation of further corrosion of oil and gas pipeline metals,a rapidly responding container was synthesized by modified Stober method.Organic silicon nanoparticles(S-SNPs)embedded with different imines were synthesized by changing the mole ratio of inorganic and organic silicon sources and loaded with MBT to obtain the intelligent corrosion inhibitor MBT@S-SNPs,and its intelligent anticorrosion performance was studied.The results showed that S-SNPs was stable in a neutral environment,but would degrade in an acidic environment,which could achieve a controlled release of corrosion inhibitor.In addition,the impedance of the corrosion sample containing MBT@S-SNPs could be 5 times than that of the blank sample,which effectively alleviated the occurrence of corrosion.The response degradation of S-SNPs and its interaction with corrosion inhibitors resulted in a high load(16%)and pH response release of corrosion inhibitors.The S-SNPs could respond to pH changes caused by corrosion and had broad application prospects in the targeted repair of corrosion.

关 键 词：有机硅纳米容器 响应降解 控制释放 智能防腐 

分 类 号：TE988[石油与天然气工程—石油机械设备] TE39