Properties of Polyurethane Paints

Polyurethane paint is an important variety in modern anti-corrosion paints. It has excellent comprehensive properties that other coating systems do not have, especially UV resistance and weather resistance.

1. Excellent wear resistance:

Urethane bonds in polyurethane paints can form macromolecular hydrogen bonds, which can alleviate the action of external forces and absorb external energy. Therefore, polyurethane paints have excellent wear resistance.

2. Excellent resistance to chemicals and oils:

The urethane bond in the polyurethane paint does not react with acid, alkali and oil, and has characteristics similar to amide groups, with excellent chemical resistance, oil resistance, mechanical strength, and abrasion resistance.

3. Strong adhesion:

The active isocyanate group in the polyurethane paint can react with the hydroxyl resin, and can also combine with the moisture in the air and the hydroxyl group on the substrate to enhance the adhesion to the substrate. It has excellent adhesion to most substrates, and its adhesion to metals is worse than epoxy resin, but its adhesion to rubber and concrete is stronger than epoxy resin.

4. Low temperature curing performance:

Because the -NCO in polyurethane coatings is very active, it can undergo crosslinking and curing reactions with hydroxyl components and components containing active hydrogen at low temperatures (-5 degrees or even lower). The cross-linking and curing of epoxy resin coatings below 10 degrees is slow, and the low-temperature curing type allows polyurethane coatings to be applied in a longer construction season.

5. High decorative performance:

There are continuous urethane bonds in the aliphatic polyurethane coating film, which has good gloss and color retention properties and good gloss. It is a highly decorative protective coating for outdoor applications. It is widely used in automobiles, airplanes, steel structures, home appliances and furniture, etc.

For more industrial paint-related information, please pay attention to Tianjin Jinhai Special Coatings & Decoration Co., Ltd., or call directly for details.