PU toy paint is mainly composed of the following ingredients:
Polyurethane Resin: This is the core component of PU toy paint, responsible for the formation and adhesion of the paint film. Polyurethane resin forms a stable paint film through chemical reactions, with good wear resistance, chemical resistance and weather resistance.
Solvent: Solvents are used to adjust the viscosity of the paint, making it easier to brush and spray. Common solvents include alcohols, ketones, ethers and aromatic hydrocarbons. The choice of solvent will affect the drying speed of the paint film and the leveling of the coating.
Hardener/Curing Agent: Hardener is a very important component in the polyurethane paint system, usually an isocyanate compound. It cross-links with the resin to form a hard coating film. The use of a curing agent can improve the hardness and durability of the coating film.
Pigments and Fillers: These ingredients are used to provide the color and hiding power of the paint. Pigments determine the appearance of the paint, while fillers are used to increase the thickness of the paint and improve the physical properties.
Plasticizer: Plasticizer is used to improve the flexibility and ductility of the paint film and prevent the coating from becoming brittle and cracking.
Additives: Additives are used to improve various properties of coatings, such as leveling, anti-foaming, UV resistance, antibacterial, etc. Common additives include defoamers, leveling agents, stabilizers and antioxidants.
Water or oily ingredients (depending on the specific type): Some PU toy paints are water-based or oily formulas. The solvent of water-based paint is water, while oil-based paint mainly relies on organic solvents.
The ratio and quality of these ingredients determine the performance of PU toy paint. Good PU toy paint should have good wear resistance, lasting color, non-toxic and harmless, and meet the safety standards for children's toys.
