2. The paint film of the external spray paint has poor adhesion to the self-skinning polyurethane foam material, and the flexibility of the paint film is even worse, which cannot match the toughness of the self-skinning polyurethane material itself; Chemicals, solvent resistance, cleaning agent resistance, aging resistance, humidity and heat resistance, weather resistance, and can better match the toughness of the self-skinning polyurethane material itself.
3. The paint mold of the in-mold paint is formed into a film before the crosslinking of the A component of the hydroxyl-containing polyester polyol and the B component of the isocyanate, so that the paint film has more excellent surface strength and can effectively block foaming. yellowing of the material; improve the surface wear resistance of the foamed material; strengthen the adhesion of the paint on the surface of the material; cover the surface defects caused by the foaming process.
It is suitable for the production of polyurethane material products such as rigid foam, semi-rigid and self-skinning.
