铝板表面无机与有机硅烷复合杂化膜的制备与性能  

Preparation and Properties of Inorganic and Organ Silane Composite Hybrid Membrane on Surface of Aluminum Plates

作　　者：徐英男 于海 郭承鑫 刘光政 潘文波 王军淇 侯传金 XU Yingnan;YU Hai;GUO Chengxin;LIU Guangzheng;PAN Wenbo;WANG Junqi;HOU Chuanjin(Dalian Gaojia Chemical Co.,Ltd.,Dalian 116308,China;School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连高佳化工有限公司,辽宁大连116308 [2]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《材料保护》2024年第2期123-127,共5页Materials Protection

基　　金：辽宁省自然科学基金项目(2022-MS-346)资助。

摘　　要：为替代对环境污染严重的传统磷化和六价铬钝化技术,制备了一种由氨基硅树脂、聚氨酯树脂和无机金属组成的硅烷钝化液,将该钝化液涂布于脱脂后的铝板表面使其形成有机无机杂化膜。研究了钝化液pH值、氨基硅树脂的质量分数、聚氨酯树脂的质量分数和无机金属离子Zn^(2+)、Mn^(2+)、Ni^(2+)和Ce^(3+)的种类对杂化膜耐腐蚀性能的影响,并用IR、SEM和TGA对杂化膜进行形貌和结构的表征,通过电化学实验测出不同条件下涂覆杂化膜的铝板的开路电位、EIS谱和Tafel极化曲线对杂化膜进行耐腐蚀性能表征。结果表明:pH值趋于4.5、氨基硅树脂质量分数占15.0%、聚氨酯树脂质量分数占10.0%、金属离子为1.5%Zn^(2+)时所得杂化膜耐腐蚀性能较好。To replace traditional phosphating and hexavalent chromium passivation technologies,which cause serious environmental pollution,a silane passivation solution was prepared.This solution was composed of amino silicone resin,polyurethane resin and inorganic metal.It was then coated on the degreased aluminum plate surface to form an organic-inorganic hybrid film.The study investigated the effects of various fac-tors on the corrosion resistance of the hybrid membrane:the pH value of the passivation solution,the mass fractions of amino silicone resin and polyurethane resin and the types of inorganic metal ions(Zn^(2+),Mn^(2+),Ni^(3+)and Ce^(3+)).The morphology and structure of the hybrid membrane were characterized by infrared spectrum(IR),scanning electron microscopy(SEM)and thermogravimetric analysis(TGA).Characterizing the corrosion resistance of hybrid membrane by measuring the open circuit potential,EIS spectrum and Tafel polarization curve of aluminum plates coated with hybrid membrane under different conditions through electrochemical experiments.Results showed that the hybrid membrane exhibited good corrosion resistance when the pH value was around 4.5,the mass fraction of amino silicone resin was 15.0%,the mass fraction of polyurethane resin was 10.0%ꎬand the metal ion was 1.5%Zn^(2+).

关 键 词：硅烷钝化液 杂化膜 氨基硅树脂 聚氨酯树脂 耐蚀性 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]