Sunday, February 7, 2010

Acrylic and enamel - reaction?

Now here is one for the 'real' DIY'ers amongst you.


Why does enamel varnish over acrylic paint have no reaction between the two YET acrylic paint over enamel paint reacts and bubbles?????Acrylic and enamel - reaction?
Simply, because the enamel paint solvents does not dissolve the acrylic paint when it has hardened.


Generally, paints are pigments in binders and solvents, when dry the binders set and the solvent evaporate. The original solvents cannot usually dissolve the 'set' binders because they often undergo a chemical change. So you would use paint stripper not turps to remove dried gloss paint. The acrylic paint solvent /binder can disrupt the enamel binder.
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