fényállóság
Fényállóság, often translated as lightfastness or colorfastness to light, refers to the resistance of a colored material, such as a pigment, dye, or ink, to fading or color change when exposed to light. This property is crucial for many applications where the longevity of color is important, including textiles, paints, printing inks, and artistic materials.
The degree of lightfastness is typically measured using standardized tests, often involving exposure to artificial light
Factors influencing lightfastness include the chemical structure of the colorant, the concentration of the colorant, the
Understanding and ensuring adequate lightfastness is essential for product quality and consumer satisfaction, particularly for items