STUDY ON WATER ADSORPTION AND CORROSION PROTECTION PROPERTIES OF MODIFIED EPOXY COATINGS

J Chin Soc Corr Pro

2002, Vol. 22

Issue (1): 41-43 DOI:

Research Report

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STUDY ON WATER ADSORPTION AND CORROSION PROTECTION PROPERTIES OF MODIFIED EPOXY COATINGS

Lixin Gao;Daquan Zhang;Guoding Zhou;Huagang Li

上海电力学院

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Abstract The water uptake of two kinds of epoxy films and co atings was investigated using gravimetric method and electrochemical impedance s pectroscopy.The water barrier properties and their effect on the degradation of the interface have been studied.The results show that the water uptake of coatin g can be divided into two processes.One is the permeation of water in coating it self.The other is dispersing of water on metal surface.The bond of metal/coating interface has important influence on corrosion protection of epoxy coating.The epoxy resin,which had been blended with Morpholium Mannich base,had better corro sion resistance.

Key words: electrochemical impedance spectroscopy epoxy coating water sorption coating resistance coating cap

Received: 18 October 2000

ZTFLH:

TG174.46

Corresponding Authors: Lixin Gao

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Lixin Gao; Daquan Zhang; Guoding Zhou; Huagang Li. STUDY ON WATER ADSORPTION AND CORROSION PROTECTION PROPERTIES OF MODIFIED EPOXY COATINGS. J Chin Soc Corr Pro, 2002, 22(1): 41-43 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2002/V22/I1/41

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