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  

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

作　　者：黄道战[1,2] 蓝虹云[1,2] 雷福厚 罗丽[1,2] 王小淑[1,2] 

机构地区：[1]广西民族大学化学与生态工程学院 [2]广西林产化学品开发与应用重点实验室,广西南宁530006

出　　处：《林产化学与工业》2011年第4期36-40,共5页Chemistry and Industry of Forest Products

基　　金：广西青年科学基金(桂科青0728018);广西教育厅科研项目(201010LX083);广西民族大学引进人才科研启动项目(2010QD020)

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。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.

关 键 词：N-(邻羟基苯甲基)脱氢枞胺 缓蚀剂 碳钢 盐酸 

分 类 号：TQ351[化学工程] TG172.3[金属学及工艺—金属表面处理]