Solubility and Corrosion Inhibition Performance of Imidazoline Solid Inhibitor
摘 要
通过正交试验制备了一种咪唑啉固体缓蚀剂,用静态玻管法和失重法分别评价了固体缓蚀剂的溶解性能和缓蚀效果。通过电化学方法研究了该固体缓蚀剂在不同温度的5% HCl溶液中对N80钢的缓蚀性能,并对缓蚀剂的吸附行为及N80钢的腐蚀形貌进行了分析。结果表明:该固体缓蚀剂是一种缓释型缓蚀剂,随着放置时间的延长,固体缓蚀剂的溶出速率逐渐降低,72 h后溶出速率为0.403 g/h;在5% HCl溶液中,该固体缓蚀剂能有效抑制N80钢的腐蚀,缓蚀率随温度降低和缓蚀剂加量的增加而增大;该缓蚀剂是一种阳极型缓蚀剂,在N80钢表面的吸附符合Langmuir吸附等温式,属于单分子层吸附,吸附方式为混合吸附。
Abstract
An imidazoline solid corrosion inhibitor was prepared by orthogonal test. The solubility and inhibition effect of the solid corrosion inhibitor were evaluated by static glass tube method and weight loss method, respectively. The corrosion inhibition performance of the solid corrosion inhibitor on N80 steel in 5% HCl solution at different temperatures was studied by electrochemical method, and the adsorption behavior of the inhibitor and corrosion morphology of N80 steel were analyzed. The experimental results show that the solid corrosion inhibitor was a slow-release inhibitor, whose dissolution rate decreased gradually with the increase of time, and reached to 0.403 g/h after 72 hours. In 5% HCl solution, the solid corrosion inhibitor could effectively inhibit the corrosion of N80 steel. The inhibition efficiency increased with the decrease of temperature and the increase of inhibitor dosage. The inhibitor was an anodic type inhibitor. The adsorption of the inhibitor on the surface of N80 steel conformed to Langmuir adsorption isotherm, which belonged to monolayer adsorption, and the adsorption mode was mixed adsorption.
中图分类号 TG174.42 DOI 10.11973/fsyfh-201910006
所属栏目 缓蚀剂
基金项目
收稿日期 2019/1/21
修改稿日期
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联系人作者艾俊哲(aajzz@163.com)
引用该论文: AI Junzhe,DUAN Lidong,WANG Huan. Solubility and Corrosion Inhibition Performance of Imidazoline Solid Inhibitor[J]. Corrosion & Protection, 2019, 40(10): 740
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参考文献
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【4】李志元,王素芳,林蓓,等. 水溶性咪唑啉缓蚀剂的合成及缓蚀性能评价[J]. 工业水处理,2015,35(2):83-85.
【5】范伟. 不同缓蚀剂在油田配注水中的缓蚀行为[J]. 腐蚀与防护,2018,39(5):391-394.
【6】闫旭涛. 复合缓蚀剂在油田采出水中的缓蚀性能研究[J]. 表面技术,2017,46(7):178-182.
【7】艾俊哲,梅平,郭兴蓬. 饱和CO2盐水溶液中咪唑啉缓蚀剂在碳钢表面上的吸附行为[J]. 中国腐蚀与防护学报,2011,31(4):305-308.
【8】ZHAO J M,GU F,ZHAO T,et al. Corrosion inhibition performance of imidazoline derivatives with different pedant chains under three flow rates in high-pressure CO2 environment[J]. Research on Chemical Intermediates,2016,42(6):5753-5764.
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【10】尹成先,冯耀荣,兰新哲,等. 一种新型固体缓蚀剂的合成及性能[J]. 精细化工,2006(9):930-932.
【11】韩敏娜,于洪江,周建猛. 高温固体缓蚀剂XH-3的研制与应用[J]. 广州化工,2016,44(19):159-161,194.
【12】李爱兵,李广振,刘含雷,等. 固体酸洗缓蚀剂SGR-0404的研制[J]. 清洗世界,2015,31(9):18-20.
【13】王伟,荣沙沙,王正,等. 油田用咪唑啉固体缓蚀剂的缓蚀行为[J]. 长江大学学报(自科版),2018,15(9):21-24,33, 4.
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【15】杨永飞,赵修太,赵晓珂,等. 油田污水介质中的固体缓蚀剂[J]. 腐蚀与防护,2009,30(12):909-911,924.
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