Preparation of TiO<sub>2</sub>-GO and anti-corrosion performances of TiO<sub>2</sub>-GO/epoxy coatings

YU Zongxue; MA Yu; HE Yi; LIANG Ling; LYU Liang; ZENG Guangyong; YIN Di

doi:10.13801/j.cnki.fhclxb.20141118.002

Volume 32 Issue 4

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YU Zongxue, MA Yu, HE Yi, et al. Preparation of TiO2-GO and anti-corrosion performances of TiO2-GO/epoxy coatings[J]. Acta Materiae Compositae Sinica, 2015, 32(4): 1017-1024. doi: 10.13801/j.cnki.fhclxb.20141118.002

Citation:

YU Zongxue, MA Yu, HE Yi, et al. Preparation of TiO₂-GO and anti-corrosion performances of TiO₂-GO/epoxy coatings[J]. Acta Materiae Compositae Sinica, 2015, 32(4): 1017-1024. doi: 10.13801/j.cnki.fhclxb.20141118.002

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Preparation of TiO₂-GO and anti-corrosion performances of TiO₂-GO/epoxy coatings

doi: 10.13801/j.cnki.fhclxb.20141118.002

1.
School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China;
2.
State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China

Received Date: 2014-08-26
Rev Recd Date: 2014-10-22
Publish Date: 2015-08-15

Abstract

Abstract

In order to enhance the anti-corrosion performances of epoxy coatings, first, graphene oxide (GO) was prepared by modified Hummers method. Then, by loading 3-aminopropyltriethoxysilane (KH550) modified nano-TiO₂ on the surface of GO, composite particles of modified nano-TiO₂ and GO (TiO₂-GO) were prepared, and TiO₂-GO were characterized by FTIR, XRD and SEM. Finally, the TiO₂-GO were dispersed in epoxy, and TiO₂-GO/epoxy coatings whose TiO₂-GO contents were 1wt%, 2wt% and 3wt% and pure epoxy coatings were fabricated, respectively. The fracture surface morphologies of coatings were observed by SEM, and the anti-corrosion performances of coatings were characterized by electrochemical workstation and high temperature and high pressure corrosion test. The results demonstrate that nano-TiO₂ connects with GO by chemical bond, and dispersing TiO₂-GO in epoxy coating can evidently enhance the anti-corrosion performances of epoxy coatings. The research provides references for improving the anti-corrosion performances of epoxy coatings by means of adding GO.
- graphene oxide,
- KH550,
- nano-TiO₂,
- composite coating,
- anti-corrosion
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