十二烷基双胍盐对金属铜的缓蚀性能
Corrosion Inhibition Properties of Dodecylbiguaniding Salt (DODH) for Copper
摘 要
以双氰胺和十二胺为原料,采用亲核加成反应,合成了十二烷基双胍盐(DODH).用FT-IR对合成产物的官能团结构进行了表征,并通过静态失重法和动电位极化法,考察了DODH对铜在5% HCl、5% NaHCO3及3% NaCl水溶液中的缓蚀效果.试验结果表明,在上述溶液中DODH对铜均具有缓蚀效果,其中在5% NaHCO3水溶液中的缓蚀效果最好,当用量为100 mg/L时缓蚀率可达98.4%;在5% HCl水溶液中,用量在100 mg/L时缓蚀率为79.3%;而在3% NaCl水溶液中,DODH的缓蚀效果一般.极化曲线分析表明,DODH是一种以抑制阴极过程为主、抑制阳极过程为辅的混合型缓蚀剂.
紫铜
双胍
静态失重
动电位极化
inhibitor
copper
biguanide
static weight loss
potentiodynamic polarization
Abstract
Dodecylbiguanidine salt(DODH)was synthesized by nucleophilic addition reaction using dicyanodiamde and aliphatic amine as raw materials.The compound was characterized by FT-IR,and the corrosion inhibition effect of DODH on copper was investigated by means of static weight loss and potentiodynamic polarization in 5% HCl,5% NaHCO3 and 3% NaCl solutions.The results showed that the best corrosion inhibition effect of DODH on copper was in 5% NaHCO3,inhibition efficiency was 98.4% at 100 mg/L;the inhibition efficiency was 79.3% at 100 mg/L in 5% HCl;but the inhibition efficiency was common in 5% NaCl.Polarization curve results showed that DODH was a kind of mixed-type inhibitor,but the inhibition effect for cathodic reaction was dominant.
中图分类号 TG174.42
所属栏目 试验研究
基金项目
收稿日期 2010/1/10
修改稿日期 2010/3/18
网络出版日期
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备注史俊,教授.
引用该论文: SHI Jun,WANG Tao. Corrosion Inhibition Properties of Dodecylbiguaniding Salt (DODH) for Copper[J]. Corrosion & Protection, 2010, 31(11): 844～846
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参考文献
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【2】Fan D H,Yuan Y L.The Complete Collection of medicine in China(Vol.of Western Medicine)[M].Beijing:People’s Sanitation Press,1998:134.
【3】Bankim C Das.Crystal and molecular structure of a new biguanide metal complex,［Cu(AMNH)2］Cl2[J].Journal of Crystallographic and Spectroscopic Research,1993,23(6):509-512.
【4】Mark J Dresser,Xiao G Q,Maya K,et al.Leabman interactions of n-Tetraalkyl-ammonium compounds and biguanides with a human renal organic cation transporter (hOCT2)[J].Pharmaceutical Research,2002,19(8):1244-1247.
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