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林产化学与工业

林产化学与工业 ›› 2011, Vol. 31 ›› Issue (4): 36-40.

• 研究报告 • 上一篇    下一篇

N-(邻羟基苯甲基)脱氢枞胺的合成及在盐酸溶液中对碳钢的缓蚀性能

黄道战, 蓝虹云, 雷福厚, 罗丽, 王小淑   

  1. 广西民族大学 化学与生态工程学院;广西林产化学品开发与应用重点实验室, 广西 南宁 530006
  • 收稿日期:2010-12-23 修回日期:1900-01-01 出版日期:2011-08-30 发布日期:2011-08-30

Synthesis of N-(2-Hydroxy-benzyl)-dehydroabietylamine and Its Corrosion Inhibition Properties on Carbon Steel in Hydrochloric Acid Solution

HUANG Dao-zhan, LAN Hong-yun, LEI Fu-hou, LUO Li, WANG Xiao-shu   

  1. College of Chemistry and Ecological Engineering, Guangxi University for Nationalities;Key Laboratory of Development & Application of Forest Chemicals of Guangxi, Nanning 530006, China
  • Received:2010-12-23 Revised:1900-01-01 Online:2011-08-30 Published:2011-08-30

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摘要： 由脱氢枞胺与水杨醛制备脱氢枞胺水杨醛希夫碱(DAS),经硼氢化钠还原得到N-(邻羟基苯甲基)脱氢枞胺(DARS)。采用红外光谱、紫外光谱、 1H NMR 对DARS进行结构表征,并通过静态失重法、电化学方法考察DARS在盐酸溶液中对A3钢的缓蚀性能。结果表明,DARS含有仲胺官能团,在盐酸溶液中的溶解性和稳定性大于DAS,能较好地抑制盐酸对A3钢的腐蚀;在DARS用量为 0.005 %、温度为 40 ℃、体积分数为 5.84 % 的盐酸溶液中,A3钢的腐蚀速度小于 2.5 g/(m2·h),缓蚀效率高于 98 %。极化曲线表明DARS属于吸附型缓蚀剂。

关键词: N-(邻羟基苯甲基)脱氢枞胺, 缓蚀剂, 碳钢, 盐酸

Abstract: N-(2-Hydroxy-benzyl)-dehydroabietylamine (DARS) was synthesized through condensation of dehydroabietylamine and salicylaldehyde and followed by reduction using NaBH4. The structure of DARS was characterized by IR, UV and 1H NMR. Its corrosion inhibition behavior on carbon steel (type A3) in HCl solution was studied by weight-loss measurement and polarization curves. Due to secondary amino group in DARS sturcture, DARS displays better solubility and stability than DAS in HCl solution. Under conditions of 5.84% HCl solution with 0.005 % DARS at 40 ℃, the corrosion rate and corrosion inhibition efficiency on carbon steel were 2.5 g/(m2·h) and 98 % respectively. Polarization curves reveal that DARS is an absorb-type corrosion inhibitor.

Key words: N-(2-hydroxybenzyl)-dehydroabietylamine, corrosion inhibitor, carbon steel, hydrochloric acid

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