To maintain the bright color of PU pigments, the following methods can be adopted:
Choose high-quality pigments: Using pigments with higher stability is the basis for maintaining bright colors. High-quality pigments usually have better light fastness and weather resistance, and are not easy to fade.
Anti-UV treatment: Ultraviolet rays are one of the main causes of pigment fading. Using a protective layer containing UV absorbers or UV resistance can effectively reduce the damage of ultraviolet rays to pigments and delay the fading of colors.
Add antioxidants: Oxidation reactions can cause pigments to fade and discolor. Adding antioxidants can reduce this reaction and extend the service life of pigments.
Suitable surface coating: The surface coating of PU materials can increase protection from the external environment. The use of a transparent protective coating can effectively isolate air, moisture and other environmental factors to prevent pigments from fading.
Avoid high temperature and humidity environments: High temperature and high humidity will accelerate the fading and aging of PU pigments, so avoid exposing products containing PU pigments to extreme environments.
Use appropriate curing agents: PU pigments usually need to be used in conjunction with curing agents. Reasonable selection of the curing agent ratio can improve the stability and color brightness of the pigments.
Regular cleaning and maintenance: Surface dirt and contaminants may affect the vividness of the pigment. Regular cleaning and maintenance of PU products can maintain the color and brightness of the pigment.
These measures can significantly extend the vividness and service life of PU pigments.
