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所属单位：科学技术研究院

发表刊物：Fuhe Cailiao Xuebao

摘要：In order to achieve homo-disperse of nano TiO2, nano TiO2 was treated by the silane coupling agent and the Zn-Al/waterborne epoxy composited coatings containing silane modified nano TiO2 were prepared by incorporating different mass fraction of TiO2 nanoparticles in the epoxy resin and Zn-Al powders via solution blended process. The combination action of the nano TiO2 and Zn-Al flake powder in the coating was explored. The XRD and FTIR were used to analyze the phase composition and structure of the coating. The micro morphology and elementary composition of the coating surface were representated by the SEM and EDS. The corrosion resistance of coatings was investigated by polarization curves and electrochemical impedance spectroscopy(EIS) tests. EDS and FTIR results suggest that the modified nano TiO2 is symmetrical dispersion in the coating, the crosslinking reaction of nano TiO2 and epoxy resin makes the coating more pyknoticly. The EIS tests show that due to the filling effects of Zn-Al flake powder and nano TiO2, the corrosion behavior of the silane modified nano TiO2-Zn-Al/waterborne epoxy coatings is more slower than that of nano TiO2, when the content of nano TiO2 increases to 4wt%, the corrosion current density of the silane modified nano TiO2-Zn-Al/waterborne epoxy coatings is 9.86×10-6 A/cm2, the corrosion current density is higher one rank than none nano TiO2. © 2018, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

ISSN号：1000-3851

是否译文：否

发表时间：2018-09-01

合写作者：姚正军,张莎莎,Du, Wenbo

通讯作者：沈雨佳