聚苯胺/铬酸锶复合材料的制备及其环氧涂层防腐蚀行为研究  

Preparation and Anticorrosive Performance of the Polyaniline/Strontium Chromate Composites

作　　者：张守一[1] 林旭峰[1] 钱军[1] 

机构地区：[1]华东理工大学材料科学与工程学院特种功能高分子材料及相关技术教育部重点实验室,上海200237

出　　处：《涂料工业》2013年第9期7-13,共7页Paint & Coatings Industry

摘　　要：利用原位聚合的方法合成了不同质量比的聚苯胺/铬酸锶复合材料,使用扫描电镜(SEM)、透射电镜(TEM)、傅里叶变换红外光谱(FT-IR)和X射线衍射(XRD)对复合材料进行了表征,并在不锈钢片上制备了聚苯胺/铬酸锶复合材料的环氧涂层,利用电化学工作站和盐雾试验箱测试其防腐性能。测试结果表明:聚苯胺/铬酸锶复合材料的防腐效果优于聚苯胺,且当复合材料中聚苯胺与铬酸锶的质量比为1∶1时,防腐蚀性能最好,该复合材料环氧涂层的腐蚀电位较聚苯胺环氧涂层提高30 mV,腐蚀电流密度下降一半,降低成本的同时提高了其防腐性能。Epoxy coating incorporating polyaniline/strontium chromate composites （PANI/ SrCrQ ） synthesized by in-situ polymerization was found to exhibit excellent corrosion resis- tance superior to polyaniline （PANI） in aggressive environments. The composites were char- acterized by using SEM, TEM, FT - IR and XRD, while the corrosion studies were carried out on steel plates coated with epoxy coating containing PANI/SrCrO4 composites prepared with different concentrations of SrCrO4. When the mass ratio of PANI/SrCrO4 was 1： l, the com- posite coating exhibited the best anticorrosive property. Its corrosion potential was higher than epoxy polyaniline coating by 30 mV and the corrosion current density was reduced by a half, which could reduce cost and improve anti-corrosion performance.

关 键 词：聚苯胺 铬酸锶 复合材料 环氧树脂 防腐性能 

分 类 号：TQ635.2[化学工程—精细化工]