热镀锌钢硅烷-壳聚糖转化膜的制备及其性能  

Preparation and Performance Characterization of Silane-Chitosan Hydrophobic Conversion Film on Hot-Dip Galvanized Steel

作　　者：杨兴亮[1] 田飘飘[2] 徐丽萍[2] 赵云龙[1] 张千峰[1,2] 

机构地区：[1]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243000 [2]安徽工业大学分子工程与应用化学研究所,安徽马鞍山243002

出　　处：《材料保护》2015年第11期60-62,43,共3页Materials Protection

基　　金：科技部863计划新材料研究专题项目(2009AA03Z529)资助

摘　　要：为了提高壳聚糖转化膜的耐蚀性,以硅烷KH563与壳聚糖作为主成膜物质,添加正硅酸四乙酯、纳米二氧化硅和三甲基氯硅烷作辅成膜物质,在镀锌钢表面转化成膜,采用电化学工作站分析转化膜的电化学性能,采用扫描电镜及原子力显微镜观察转化膜形貌,并与单一的硅烷KH563转化膜和壳聚糖转化膜进行性能比较。结果表明:硅烷-壳聚糖转化膜的抗腐蚀性能优于单一转化膜;KH563与壳聚糖复合后,提高了转化膜的表面粗糙度,使其耐腐蚀性和疏水性有所提升。With chitosan and silane KH563 as main film-forming materials,tetraelhoxysilane,nanometer silicon dioxide and trimethylchlorosilane were added as auxiliary film-forming materials to generate film on the surface of galvanized sheet.The AC impedance was measured,and the morphology after salt-water immersion was observed.Moreover,the performance was compared with those of single silane KH563 conversion film and single chitosan conversion film.Results showed that the corrosion resistance of silane-chitosan conversion film was superior to the single conversion films.After KH563 composited with chitosan,the roughness of the films was improved,and the corrosion resistance and hydrophobicity were also increased.

关 键 词：镀锌板 硅烷 壳聚糖 耐蚀性 转化膜 

分 类 号：TG174.46[金属学及工艺—金属表面处理]