CeO_2/环氧树脂复合材料制备及其耐电化学腐蚀行为研究  

Study on preparation and electrochemical corrosion behavior of CeO_2 epoxy resin composite

作　　者：陈佳[1] 刘作华[1] 范兴[1] 唐金晶[1] 陶长元[1] 杜军[1] 

机构地区：[1]重庆大学化学化工学院,重庆400044

出　　处：《功能材料》2015年第4期4037-4041,共5页Journal of Functional Materials

基　　金：中央高校基本科研业务费理工类跨学科资助项目(CDJZR12228801)

摘　　要：CeO2填充环氧树脂,并用偶联剂KH560对CeO2进行表面改性,通过溶液混合法制备CeO2/环氧树脂复合材料。分别通过拉曼光谱仪、紫外漫反射光谱仪、场发射扫描电子显微镜和电化学工作站对CeO2/环氧树脂复合材料的微观结构和电化学防腐性能进行测试。结果表明,表面改性的CeO2在环氧树脂基体中具有更好的分散性;所制备的改性后CeO2/环氧树脂复合涂层对镀锌板附着力达到1级;与水接触角达到82.5°;电化学防腐性能测试中其浸泡30 min阻抗值在109Ω·cm2以上,浸泡7 d阻抗值基本保持在107Ω·cm2左右,高于未改性的CeO2制备的复合材料和普通环氧树脂材料。改性后CeO2/环氧树脂复合材料的附着力、疏水性和化学防腐性能明显优于未改性的CeO2制备的复合材料和普通环氧树脂材料。CeO 2/epoxy composite was prepared by solution process with CeO 2 powder modified by KH560 cou-pling agent.The impact of coupling agent on microstructure of composites was investigated by Raman,UV-vis DRS and FESEM.The electrochemical corrosion behavior of epoxy resin treated CeO 2/epoxy composite and un-treated CeO 2/epoxy composite were measured by CHI660D electrochemical workstation respectively.It showed that the coupling agent improved the interaction between CeO 2 and epoxy.Both the fraction of CeO 2 and KH560 had effective on adhesive force and corrosion resistance.The adhesive force of the composite with treated CeO 2 on galvanized steel was one grade,the contact angle of water against it to be 82.5°;and its electrochemical imped-ance was 10 9 Ω·cm^2 at the beginning of immersion time and about 10 7 Ω·cm^2 in the later stage.It was higher than that with untreated CeO 2 and epoxy resin.The adhesive force and protective performance of the untreated CeO 2/epoxy composite was better than that of the epoxy resin.The treated CeO 2/epoxy composite was the best among the three materials.

关 键 词：CEO2 环氧树脂复合材料 偶联剂 KH560 表面改性 防腐性能 

分 类 号：TB33[一般工业技术—材料科学与工程] TB34