The Mechanisms of Epoxy Latex Coatings Curing at Ambient Temperature Comparison with Solvent-Type Ones

Article Preview

Abstract:

The performance and behavior of epoxy latex coatings are different from solvent-type ones.It is decided by the distinct curing mechanism. The solvent-type epoxy film obtained from epoxy resin and curing agent by homogeneous reaction, namely, the state of epoxy resin and curing agent is uniform. However, epoxy latex film made from epoxy resin emulsion or dispersion and water soluble amine by polyphase reaction. So the determination of potlife of epoxy latex can be showed by film gloss changes with residence time, dissimilar with solvent-type by the index of viscosity. The modern infrared spectrum measure shows that the epoxy groups in the dried epoxy latex film exist even if EEW to HAV proportion is 1.2:1. This also testifies the incomplete polyphase reaction mechanism of epoxy emulsion coating curing at ambient temperature.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 150-151)

Pages:

1249-1253

Citation:

Online since:

October 2010

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Jeongyun Do, Yangseob Soh, Cement and Concrete Research, Vol. 33(2003), p.1497.

Google Scholar

[2] D. Jim. Elmore, S. Kincaid. Derek, C. Komar. Pratap, et al, Journal of Coatings Technology, Vol. 74( 2002), p.63.

Google Scholar

[3] E.C. Galgoci, Journal of Coatings Technology, Vol. 71( 1999) p.45.

Google Scholar

[4] Ping Chen, Shengping Liu, Epoxy Resin, edited by Chemical industry press, Beijing(2004), in press.

Google Scholar

[5] S.S. Pathak, A.S. Khanna, Progress in Organic Coatings, Vol. 62(2008), p.409.

Google Scholar

[6] F. Galliano, D. Landolt. Progress in Organic Coatings, Vol. 44(2002), p.217.

Google Scholar

[7] Yingtao Jiang, Coating Technology The Fifth Fascicule. Revised and enlarged edition, edited by Chemical industry press, Beijing(2001), in press. Acknowledgement Authors acknowledge the financial support of Guangdong province 211 project program.

Google Scholar