水溶性壳聚糖及其复配的缓蚀性能  

Inhibition Behavior of Water Soluble Chitason Compounds with Other Inhibitive Components

作　　者：李言涛[1] 邵丽艳[2] 吴茂涛[3] 刘建国[1] 

机构地区：[1]中国科学院海洋研究所,青岛266071 [2]中国海洋大学,青岛266003 [3]青岛科技大学,青岛266042

出　　处：《腐蚀与防护》2009年第3期161-164,共4页Corrosion & Protection

基　　金：青岛市科技发展计划项目No.05-1-JC-87

摘　　要：钼酸盐、铬酸盐和硫酸锌是目前公认的缓蚀效果优良的缓蚀剂。理论上讲壳聚糖也具有一定的缓蚀作用,为验证水溶性壳聚糖的缓蚀类型及其复配的协同缓蚀效果,对水溶性壳聚糖与钼酸铵、硫酸锌以及铬酸钠复配的缓蚀性能进行了研究。结果表明:钼酸铵与壳聚糖复配使用,会发生严重的絮凝现象;硫酸锌与壳聚糖复配,会降低腐蚀电流密度,提高缓蚀效率,但也有少量絮凝物,并且提高温度絮凝物增多;铬酸钠与壳聚糖复配,无论在常温还是60℃高温条件下,都能产生较好的协同缓蚀效果,不发生絮凝且降低环境污染,适宜复配。Molybdate,chromate and zinc sulfate are recognized as the best inhibitors at present.In order to test the inhibition type of chitason and the synergistic inhibition performance of its compounds,and the possibility for using the water soluble chitosan as a component of corrosion inhibitor,the corrosion inhibition performance of chitosan compounds with（NH＋4）2MoO4、ZnSO4 and Na2CrO4 was studied.The results indicate that（NH＋4）2MoO4 is not suitable to compound with chitason because of serious co-floculation phenomenon;ZnSO4 compounds with chitason can reduce corrosion current density and raise inhibition efficiency,but a little flocculates still appear,and more flocculates appears at higher temperatures.Na2CrO4 compounded with chitason can produces better synergistic inhibition performance and no flocculates appear at normal temperature or high-temperature of 60 ℃,which can reduce the environmental pollution and is suitable for compoundation.

关 键 词：壳聚糖 复配 协同缓蚀 絮凝 

分 类 号：TG174.42[金属学及工艺—金属表面处理]