Corrosion Performance of Epoxy Coatings by Chemical Modification with Silanes

Authors

Liang LIU, Department of Chemistry,Zhejiang University,Hangzhou 310027,China;
Wei-gang JI, Department of Chemistry,Zhejiang University,Hangzhou 310027,China;Department of Chemistry,Third Military Medicine University,Chongqing 400038,China;
Ji-ming HU, Department of Chemistry,Zhejiang University,Hangzhou 310027,China;
Jian-qing ZHANG, Department of Chemistry,Zhejiang University,Hangzhou 310027,China;State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;
Chu-nan CAO, Department of Chemistry,Zhejiang University,Hangzhou 310027,China;State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;

Abstract

The improvement of corrosion performance of epoxy coatings by modification with "active" and "non-active" silanes is presented."Active" silanes are defined as ones having functional groups that can react with the epoxy groups in the epoxy resin,usually amino-silanes."Non-active" silanes are defined as ones not reacting with the epoxy groups,but can react with the hydroxyl groups in the epoxy backbone by the condensation reactions under the catalysis of organic tin compounds.The FTIR results showed that both the "active" and "non-active" silanes had been successfully grafted onto the epoxy resin.Electrochemical impedance spectroscopy(EIS) and accelerated corrosion test(Machu test) showed that the corrosion performance of epoxy coatings could be improved by chemical modification with both the "active" and "non-active" silanes.

Keywords

epoxy resin, chemical modification, silane, corrosion performance

DOI Link

https://doi.org/10.61558/2993-074X.1973

Publication Date

2009-05-28

Online Available Date

2009-05-28

Revised Date

2009-05-28

Received Date

2009-05-28

Recommended Citation

Liang LIU, Wei-gang JI, Ji-ming HU, Jian-qing ZHANG, Chu-nan CAO. Corrosion Performance of Epoxy Coatings by Chemical Modification with Silanes[J]. Journal of Electrochemistry, 2009 , 15(2): 163-169.
DOI: 10.61558/2993-074X.1973
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss2/8