Paint Drying and Curing - Solvent-Evaporation Type (Air Dry)
1. Solvent-Evaporation Type (Air Dry)
This type of paints forms a coat when the solvent and thinner in them evaporate. Resins remain unchanged after the formation of the coat. Therefore, the hardened coat can be wiped off easily with a reducer/thinner.
Air dry type paints are not used often anymore due low solvent and weather resistance.
1.
Coating condition immediately after painting.
2.
A layer of paint film is formed through air drying process as paint thinner and solvent evaporate.
3.
Resin molecule reaction stops when completely dried, and a horizontally aligned paint film gets formed (2D paint structure).