改进化学镀银及氧化石墨烯/聚合物复合薄膜对银层的腐蚀防护  

Improving Electroless Ag Plating and Depositing Graphene Oxide/Polymer Composite Film on the Ag Layer for Corrosion Protection

作　　者：张慧茹[1] 薛小龙 Huiru Zhang;Xiaolong Xue(Composite Material Research Center,School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学材料科学与工程学院复合材料研究中心,上海200444

出　　处：《高分子材料科学与工程》2022年第2期56-65,72,共11页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51103083)。

摘　　要：以间位芳纶(PMIA)为基材,植入催化剂Ag法进行预处理,采用环保型的无氨水镀银浴进行化学镀银,制得镀银复合材料PMIA-Ag。然后,采用层层自组装技术制备了氧化石墨烯/聚乙烯亚胺(GO/PEI)_(10)膜层,并选用十七氟癸基三乙氧基硅烷(PFDS)在膜层表面疏水改性,制得(GO/PEI)_(10)-PFDS复合防护膜。结果表明,植入催化剂Ag法预处理,将银纳米颗粒(AgNPs)嵌入到PMIA表皮;无氨水镀银浴体系制得的PMIA-Ag具有良好的电学性能,方块电阻为20~30 mΩ/sq,在30~3000 MHz频率范围内平均电磁屏蔽效能为68.23 dB;且(GO/PEI)_(10)-PFDS复合防护膜具备优良的抗腐蚀防变色性能,电化学数据显示,该防护膜对银镀层的覆盖度达到96.48%,对银镀层腐蚀的缓蚀效率达到85.28%。In this work,a meta-aramid(PMIA)substrate was pretreated by embedding a Ag catalyst,and an environmentally friendly ammonia-free silver plating bath was designed for electroless silver plating to fabricate a silver plated material(PMIA-Ag).Furthermore,a graphene oxide/polyethylenimine(GO/PEI)_(10)film was prepared via the layer by layer self-assembly technique.By implementing hydrophobic modification of heptadecafluorodecyltriethoxysilane(PFDS)on the film surface,a(GO/PEI)_(10)-PFDS composite protective film was also fabricated.The results showed that prepared PMIA-Ag via the improved electroless plating technique had good electrical properties.The sheet resistance was 20~30 mΩ/sq and the average electromagnetic shielding effectiveness was 68.23 dB in the frequency range of 30~3000 MHz.Moreover,the prepared(GO/PEI)_(10)-PFDS composite protective film exhibited excellent anti-corrosion and anti-tarnish properties.The electrochemical data showed that the surface coverage of the protective film on the silver coating was 96.48%,while the corrosion inhibition efficiency on the silver coating reached 85.28%.

关 键 词：间位芳纶 化学镀银 无氨水镀银浴 层层自组装 疏水改性 银层腐蚀防护 

分 类 号：TG174.4[金属学及工艺—金属表面处理]