摘要
采用原位化学氧化聚合法成功制备了耐蚀性优异的PPy/α-Fe_2O_3复合材料。采用X射线衍射(XRD)、傅里叶红外光谱仪(FTIR)和扫描电子显微镜(SEM)等手段对复合材料的物相和微观结构进行了表征,研究了柠檬酸浓度对复合材料形貌和结构的影响。采用复合材料对环氧树脂涂层进行改性,所得复合涂层的耐蚀性显著提升,其耐蚀性很大程度上受柠檬酸浓度的影响。当柠檬酸浓度为0.5mol/L时,改性涂层的自腐蚀电位为-0.685 9V(SCE),腐蚀电流密度为3.08×10^(-6) A/m^2,交流阻抗最大,耐蚀性最佳。
PPy/α-Fe2O3 composites with excellent corrosion resistance were successfully prepared by in-situ chemical oxidation polymerization.The phase and microstructure of the composites were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscpy(FTIR)and scanning electron microscopy(SEM).The effects of citric acid concentration on the morphology and structure of the composites were investigated.Epoxy resin coating was modified by the composite materials,and the corrosion protection performance of the composite coating was significantly improved,and the corrosion resistance was largely affected by the concentration of citric acid.When the concentration of citric acid was 0.5 mol/L,the self-corrosion potential of the modified coating was-0.685 9 V(SCE),and the corrosion current density was 3.08×10-6 A/m2.The AC impedance was the largest and the corrosion resistance was the best.
作者
邹彦昭
王红
龚敏
刘川
林果
ZOU Yanzhao;WANG Hong;GONG Min;LIU Chuan;LIN Guo(College of Materials Science and Engineering,Sichuan University of Science and Engineering,Zigong 643000,China)
出处
《腐蚀与防护》
CAS
北大核心
2019年第1期13-17,42,共6页
Corrosion & Protection
基金
国家自然科学基金(51272165
51672138)
四川省腐蚀与防护重点实验室资助项目(2014CL13)
四川理工学院人才科研基金(2014PY11)
四川理工学院研究生创新基金(y2016027)
作者简介
通信作者:王红(1963-),教授,博士,主要从事功能材料的研究,13550762095,jluhong999@163.com.
