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Polyurethane is a high molecular polymer with strong chemical bonds in its structure that make it highly hydrophobic. After being applied to the surface, the polyurethane coating can form a dense, non-porous film that effectively blocks the penetration of water.

To understand whether polyurethane enamel is water-based, we must first clarify the two main types of polyurethane coatings: solvent-based and water-based. The difference between these two coatings lies mainly in the solvents they use, that is, the main volatile medium in the coating.

For most Polyurethane Enamel Paint, under standard room temperature conditions (about 20℃, 50% humidity), the surface drying time is usually between 30 minutes and 1 hour. The surface drying time of water-based Polyurethane Enamel Paint may be slightly longer, usually around 1 to 2 hours.

Polyurethane enamel paint is a high-performance coating with polyurethane resin as the main component, which has strong weather resistance and abrasion resistance. It is usually applied to surfaces that require high gloss and durability, such as exterior coatings of automobiles and ships.

Main uses of polyurethane enamel paint: 1. Automotive coating 2. Industrial equipment and machinery coating 3. Construction and interior decoration 4. Marine ship protection 5. Wood coating 6. Electronic equipment and electrical appliance coating 7. Aerospace field

Generally speaking, the complete hardening time of oil-based enamel paint is longer, usually 7-14 days, while the hardening time of water-based enamel paint and acrylic enamel paint is shorter, about 5-7 days.