When choosing the right PU color paste, consider the following factors:
1. Application and Application
Furniture and Floor Coatings: For furniture or floor coatings, choose a PU color paste with excellent abrasion resistance, strong UV resistance, and stable color.
Automotive and Industrial Coatings: These applications require high weather resistance, chemical resistance, and corrosion resistance; the selected PU colorant should possess these properties.
Leather and Shoe Coatings: For leather and shoe coatings, the PU colorant should have good adhesion and flexibility, as well as stable color.
2. Color and Tone
Determine the color type and hue you require. PU color paste are typically available in a variety of colors, so when selecting, ensure that the colorant can be blended to achieve the desired effect.
If a specialized color is required, choose a colorant with the appropriate functional properties.
3. Durability
Lightfastness: When selecting a colorant, consider its UV resistance, especially for coatings intended for outdoor use.
Abrasion and Scratch Resistance: For surfaces subject to frequent friction, such as floors and furniture, choose a colorant with good abrasion resistance. Chemical Resistance: If the paint will be exposed to acids, bases, or other chemicals, choose a colorant that is chemically resistant.
4. Solvent Type
Select a colorant based on the paint's solvent system. Water-based paints require a water-soluble PU colorant, while oil-based paints require a solvent-based colorant.
5. Particle Size and Dispersion
The particle size of the colorant affects the gloss, smoothness, and uniformity of the paint. Choosing a colorant with a smaller particle size and better dispersion will produce a better coating.
6. Environmental Requirements
If environmental standards need to be met, choose a colorant with a low volatile organic compound (VOC) content. Additionally, ensure that the selected colorant complies with relevant environmental regulations and certifications.
7. Price and Supplier
The quality and price of PU color paste vary significantly between brands and suppliers. Consider quality, performance, and cost when selecting to ensure you choose the right product within your budget.
Make sure to choose a supplier with good after-sales service and stable supply.
Taking all these factors into consideration, choosing the right PU color paste can not only improve the appearance of the coating, but also enhance its functionality and durability.
