酚醛/松香改性酚醛树脂中新型磷酸盐的缓蚀性能  

Corrosion inhibition of novel phosphates in phenolic resin or rosin-modified phenolic resin

作　　者：马少妹[1] 陈燕[1] 房伟[1] 黄文静[1] 黄福彪[1] 袁爱群[1] 徐家燕 梁建新 

机构地区：[1]广西民族大学化学与生态工程学院,化学与生物转化过程新技术重点实验室,广西南宁530006 [2]广西柳州市造漆厂,广西柳州545005

出　　处：《电镀与涂饰》2010年第11期65-68,共4页Electroplating & Finishing

基　　金：国家自然科学基金项目(20566003);广西民族大学重大项目(2008ZD012);广西科学研究与技术开发计划应用基础研究专项(桂科基0991005,桂科能0992028-13)

摘　　要：选择酚醛树脂以及酚醛/松香改性酚醛复合树脂,以磷酸锌、三聚磷酸铝APW-I为参照,采用电化学阻抗谱(EIS)考察了含AlZnPO4MoO4·4H2O和AlZn2P3O10(MoO4)2·2H2O两种第二代磷酸盐的涂层在中性3.5%(质量分数)NaCl溶液腐蚀体系中的腐蚀抑制性能,分析了AlZn2P3O10(MoO4)2·2H2O可能的腐蚀失效机制。结合常规的盐水浸泡实验,评价了两种新型磷酸盐颜料在不同涂料中的防腐性能。结果表明:含有改进的聚磷酸盐AlZn2P3O10(MoO4)2·2H2O的酚醛树脂涂层具有一定的自修复作用,中后期阻抗降低较小,展现出更为优异的腐蚀抑制性能;而在酚醛/松香改性酚醛复合树脂中,AlZnPO4MoO4·4H2O的性能更为优异。The corrosion inhibition of two second- generation phosphate pigments AlZnPO4MoO4·4H2O and AlZn2P3O10（MoO4）2·2H2O for the coatings prepared with phenolic resin or rosin-modified phenolic resin in neutral 3.5wt% NaCl solution were studied by electrochemical impedance spectroscopy （EIS） as compared with zinc phosphate and aluminum tripolyphosphate APW-I. The corrosion failure mechanism of AlZn2P3O10（MoO4）2·2H2O was analyzed specially. The anticorrosion properties of the two novel phosphate pigments were evaluated also based on conventional immersion test in the saline water. The results showed that the phenolic resin coating containing AlZn2P3O10（MoO4）2·2H2O has a self-healing capacity and relatively low impedance drop at middle and late stage, showing excellent corrosion inhibition. In the system of rosin-modified phenolic resin, AlZnPO4MoO4·4H2O has superior corrosion inhibition performance.

关 键 词：磷酸盐 防锈颜料 酚醛树脂 电化学阻抗谱 氯化 钠溶液 缓蚀性能 

分 类 号：TQ628.3[化学工程—精细化工] TG174.46[金属学及工艺—金属表面处理]