PDF全文下载：2016060624
刘欣1， 梁焕喜1， 周盼1， 韩军英2， 朱海涛*1
（1.青岛科技大学 材料科学与工程学院，山东 青岛266042;2.青岛康普顿科技股份有限公司，山东 青岛266042）
摘要：在乙二醇水体系中，以发动机的主要金属部件为主体，对一系列的有机酸缓蚀剂的缓蚀性能进行了探讨。采用电化学极化曲线测试和玻璃器皿腐蚀失重法对其缓蚀性能进行了分析。极化曲线结果表明，有机酸缓蚀剂的缓蚀效果主要通过阳极来实现。结合失重试验结果可知，苯三唑类缓蚀剂在铜表面形成连续的保护膜将消耗铜离子，导致加入该缓蚀剂后铜的腐蚀电位反而下降。研究结果表明：缓蚀剂具有选择性，因此对多种缓蚀剂进行复配，设计出了一种通用的有机配方来实现对多种金属的缓蚀防护，本配方含有一元脂肪酸、二元脂肪酸、唑类化合物及其他添加剂，环保安全、高效全面、寿命长。
关键词： 冷却液发动机；乙二醇；有机酸缓蚀剂；腐蚀防护
中图分类号：TQ 423.12文献标志码：A
Discussion on Organic Inhibitor Formulation in Engine Coolants
LIU Xin1, LIANG Huanxi1, ZHOU Pan1, HAN Junying2, ZHU Haitao1
(1.College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2.Qingdao Compton Technology Co., Ltd., Qingdao 266042, China)
Abstract: A series of organic acids individually used as corrosion inhibitors in ethylene glycol engine coolants was discussed. These acids include aliphatic monoacid, aromatic monoacid, and aliphatic diacid. The methods including cyclic polarization electrochemistry and glassware corrosion of metals were used to analyze the inhibition performance. The results of polarization curves show that the inhibition effect of organic acids is mainly achieved through the anode. Combined with the weight loss test results, copper ion was consumed to form protective film on the surface resulting in corrosion potential of copper decreasing with tolytriazole. This study shows that the inhibitor is selective, so the composite corrosion inhibitor was designed to realize the protection of various metals. It contains monoacid/diacid combinations,oxazole derivatives,and other additives. This organic corrosion inhibitor formula is environmentally safe, long life, efficient and comprehensive.
Key words: coolants engine; ethylene glycol; organic acids; corrosion protection
收稿日期：2015-06-23
基金项目：国家自然科学基金项目（51172117，51472134）.
作者简介：刘欣（1978—），女，副教授.*通信联系人.
文章编号：16726987（2016）06062407；DOI：10.16351/j.16726987.2016.06.007
