Did you know that the “Amine blush” is crucial problem in Epoxy coating

📌 You might struggle to see it at all, or it may appear as a thin, greasy or dull layer. This can be described as a sticky. oily, or waxy appearance on the surface layer of a cured epoxy.

📌This blush refers to moisture condensing on the surface of the epoxy, resulting in sticky deposits or patches, like water marks in the sand.

📌 The main cause is the nature of curing agent (Amine) present in the Epoxy paint material is hygroscopic(absorbing moisture), so it can react with moisture and form ammonium carbamate(amine blush).

📌 Amine blush is creating the adhesion issues with other coatings, also this can lead to peeling, blistering or other issues listed below.

1, Aesthetics issues
2, low glass retention
3, Increasing tendency to yellow
4, reduced chemical resistance
5, softening of the coating

📌 To avoid this issue Strictly follow the most important rule in coating industry is that the surface temperature must be minimum of 3 degree above the dew point temperature.

📌 Amine blush is the water-soluble, so it’s very simple to clean away and easily remove with some warm soapy water and scotch pad.

📌 Below Chemical reactions for your understanding and reference.

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