耐高温咪唑啉缓蚀剂的合成与性能评价.docx
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- 耐高温 咪唑 啉缓蚀剂 合成 性能 评价
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1、耐高温咪唑啉缓蚀剂的合成与缓蚀性能研究摘要咪唑啉类缓蚀剂在高温下较炔醇类及曼尼希碱类缓蚀剂稳定性好,毒性低且性能优异。本文首先选用油酸、二乙烯三胺合成咪唑啉中间体,分为以二氯甲烷、氯乙酸钠、氯化苄为季氨化试剂,对咪唑啉中间体季氨化。其次采用红外光谱(FT-IR)仪对产物进行表征;然后采用电化学和失重方法模拟油田环境中对缓蚀剂进行性能优选。结果表明,常温下缓蚀剂性能优异。最后对优选的缓蚀剂以硫脲基改性并评价其缓蚀效果。引入硫脲基之后,其缓蚀效果明显提高。在缓蚀剂浓度为1000 ppm的腐蚀介质中,其缓蚀效率可达90%。60 C下的失重法缓蚀效果也能达80%以上。本文研究结果对耐高温缓蚀剂合成具有
2、重要指导意义。关键词:高温油田环境;咪唑啉季铵盐;硫脲基改性;缓蚀性能Synthesis and Inhibition performance evaluation of High Temperature Resistant Imidazoline Corrosion InhibitorAbstractCompared to alkyne alcohols and mannitine, Imidazoline corrosion inhibitors have good stability at high temperature in corrosion environment. In add
3、ition, Imidazoline corrosion inhibitors also have other excellent properrities, such as low environmental damage and hypotoxicity. Imidazoline was synthesized from oleic acid and diethylenetriamine. And used Dichloroethane, Sodium chloroacetic acid and benzyl chloride to synthesize imidazoline quate
4、rnary ammonium salt. The product was characterized by FT-IR. Three kinds of imidazoline quaternary ammonium salts were evaluated in the corrosion medium simulating oil field environment by electrochemical method and weightlessness to select the corrosion inhibitor with better performance. The result
5、s showed that inhibitor I was superior. And add a group to the imidazoline quaternary ammonium salt with better performance. Then evaluated the modified imidazoline quaternary ammonium salt. After the modification, the corrosion inhibition effect was improved obviously. The corrosion efficiency of i
6、nhibitor can up to 90% in corrosive media with a corrosion inhibitor concentration of 1000 ppm. The weight loss inhibition effect at 60 C can also reach over 80%. The results of this study have important guiding significance for the synthesis of high temperature corrosion inhibitors.Keywords: High t
7、emperature field environment; Imidazoline-ammonium-salt; Corrosion inhibition; Thiourea-based modification目 录第1章 绪论11.1 金属的腐蚀与腐蚀原理11.1.1 金属材料腐蚀种类11.1.2 金属材料腐蚀的防护方法31.2 缓蚀剂综述51.2.1 缓蚀剂种类51.2.2 缓蚀剂的缓蚀机理61.2.3 缓蚀剂的评价方法71.2.4 缓蚀剂的发展现状91.3 选题意义和研究内容101.3.1 选题意义101.3.2 研究内容10第2章 咪唑啉缓蚀剂的合成112.1 实验材料112.2 实
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