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Thursday, 09 July 2020
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Raw materials & technologies, Raw materials, Coatings pigments

Glass flakes to enhance barrier characteristics

Monday, 17 May 2010

The resistance against corrosion of an epoxy-polyamine-based coating immersed in a 3 wt.% sodium chloride solution was investigated by electrochemical impedance spectroscopy. The organic coatingcontained glass flakes as pigment.

Source: Jean Schweitzer - Fotolia.com

Source: Jean Schweitzer - Fotolia.com

The resistance against corrosion of an epoxy-polyamine-based coating immersed in a 3 wt.% sodium chloride solution was investigated by electrochemical impedance spectroscopy (EIS). The organic coating contained glass flakes as pigment in order to enhance its barrier characteristics. The data show that this coating is more strongly adhered and exhibits higher protection characteristics when applied onto carbon steel substrates than on galvanised steel. Though the capacitance of the coating does not show any appreciable variation with immersion time, the resistance of the film is observed to increase with time upon immersion. The analysis of the data sustains that the organic film behaves as a porous, non-barrier coating. The complete paper will appear in the July issue of "Progress in Organic Coatings".

related links:

http://www.elsevier.com/locate/porgcoat

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