Characterization of protective performance of epoxy reinforced with nanometer-sized TiO2 and SiO2

被引：171
|
作者：
Shi, Hongwei [1 ]
Liu, Fuchun [1 ]
Yang, Lihong [1 ]
Han, Enhou [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Environm Corros Ctr, Shenyang 110016, Peoples R China
来源：
PROGRESS IN ORGANIC COATINGS | 2008年 / 62卷 / 04期
关键词：
electrochemical impedance spectrum; Nano-TiO2; NanO-SiO2; glass transition temperature; fourier transform infrared spectra;
D O I：
10.1016/j.porgcoat.2007.11.003
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Nano-TiO2 particles was uniformly dispersed and prepared into concentrated nano-paste. The effects of nano-TiO2 particles on the performance of epoxy resin on 2024-T3 aluminum alloy were investigated. The effects of nano-SiO2 with gamma-glycidoxypropyltrimethoxy silane modification or without modification on the performance of epoxy resin were also studied. It was found that the hardness of epoxy resin was improved by the incorporation of 1 wt.% nano-TiO2 particles or nano-SiO2. The results of electrochemical impedance spectrum (EIS) and salt spray test indicated that the addition of nano-TiO2/SiO2 significantly improved the corrosion resistance of epoxy resin. Fourier transform infrared spectra (FT-IR) proved that the new absorptions at 1070 and 1090cm(-1) on silane-treated nano-SiO2 particles, which can evidence the ring structure of Si-O-Si. The formation of layered ring structure of nano-SiO2 can be explained for the enhancement of the corrosion resistance and hardness of nano-SiO2/epoxy composite. (C) 2007 Elsevier B.V. All rights reserved.
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页码：359 / 368
页数：10
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