The color selection of luminous twill strips has a significant impact on their luminous effect, which is reflected not only in the visual perception level, but also closely related to the material properties and optical principles. From the basic principle, the luminous nature of luminous materials is to absorb the energy of external light sources and then release it in the form of visible light. As a comprehensive reflection of the reflection, absorption and transmission characteristics of the material to light, color will directly change this energy conversion process. For example, different colors of base materials have different absorption bands and efficiencies for incident light, which in turn affects the total amount of energy that the luminous material can obtain, which is ultimately reflected in the brightness, duration and color performance of the light. Therefore, when designing and applying luminous twill strips, color selection is not a simple aesthetic consideration, but requires scientific decision-making in combination with actual needs and optical laws.
From the analysis of the spectral characteristics of color, the difference between dark and light colors on the luminous effect of luminous twill strips is particularly obvious. Dark colors such as black and dark blue usually have a strong absorption capacity for visible light and can accumulate energy faster under light conditions. In theory, they can provide more sufficient excitation conditions for luminous materials. However, the dark base itself will absorb part of the light released by the luminous material, resulting in the actual observed luminous brightness being lower than expected. Taking the luminous twill strips with a black base as an example, although they perform well in the light absorption stage, the light emitted by the luminous powder will be absorbed by the black base in large quantities, and the final luminous effect may be dim, especially when observed at close range. This absorption effect is more significant. In contrast, light colors such as white and light blue have a stronger ability to reflect light. Although the light absorption efficiency may be slightly lower than that of dark colors, they can better reflect the light emitted by luminous materials and enhance visual brightness. Luminous twill strips with a white base are often used in scenes that require high visibility, which is precisely because of their enhanced reflection of luminous light.
The saturation and brightness of the color are also important factors affecting the luminous effect of luminous twill strips. Bright colors with high saturation, such as red and bright yellow, often contain more pigment particles, which may interfere with the optical properties of luminous materials. During the preparation process, high-saturation pigments may wrap or disperse the luminous powder particles, hindering their full contact with light, thereby reducing light absorption and luminous efficiency. Low-saturation colors, such as light gray and light pink, have relatively less pigment content, have less optical impact on the luminous powder, and are more conducive to maintaining its original luminous properties. In terms of brightness, high-brightness colors usually mean higher reflectivity. When the luminous material emits light, the high-brightness base can further enhance the overall brightness by reflecting light, but it may also dilute the purity of the luminous color and make the luminous tone tend to the base color. For example, when a high-brightness yellow base is matched with green luminous powder, the final luminous color may tend to be yellow-green rather than pure green.
The luminous performance of luminous twill strips of different colors in actual application scenarios also needs to be comprehensively considered in combination with ambient light conditions. In a strong light environment, such as during the day or in a high-brightness lighting place, the effect of color on the luminous effect may be masked by the ambient light. At this time, the color of the twill strips is more decorative. However, in a weak light or dark environment, the impact of color will be magnified. For example, if the luminous twill strips used for night safety signs are in a color with high contrast to the background color, such as yellow-green on a black background, they can absorb light efficiently through the dark base and use the high contrast of yellow-green to improve visibility. In interior decoration scenes, if you want to create a soft luminous atmosphere, you may choose a low-saturation light blue or lavender base, and match it with luminous powder of the same color to make the luminous effect more coordinated with the overall environment, while avoiding the visual stimulation caused by high-contrast colors.
Color selection also involves the problem of matching the characteristics of the luminous material itself. At present, the common luminous powders are mainly sulfides and rare earth aluminates. Different types of luminous powders have different luminous colors. For example, zinc sulfide usually emits blue-green light, while strontium aluminate can emit yellow-green, blue and other colors. The base color should be reasonably matched with the luminous color of the luminous powder to avoid color conflict or absorption effect. For example, if the luminous powder emits red light and the base is blue, the luminous effect observed in the end may be very weak because blue absorbs red light. On the contrary, choosing a base color close to red, such as light pink or lavender, can reduce the absorption of luminous light and enhance the visual effect. In addition, the excitation efficiency of some luminous powders on different color bases is also different, and the best matching scheme needs to be determined through experimental tests.
From the perspective of production technology, the way the color is realized will also indirectly affect the luminous effect of luminous twill strips. Factors such as the type of ink used in the printing process and the thickness of the coating, if the color is achieved through a thick coating, may increase the coverage of the luminous powder, resulting in obstruction of light absorption and release. By coloring the substrate itself (such as adding masterbatch to plastic particles), the color can be dispersed more evenly and the physical obstruction of the luminous layer can be reduced. For example, luminous twill strips produced by co-extrusion process, the colored substrate and the luminous layer are layered, which can not only ensure the beauty of color, but also maximize the retention of the optical properties of the luminous material. The color selection space under this process is larger and the negative impact on the luminous effect is smaller.
In practical applications, balancing the beauty of color and luminous performance is the key to designing luminous twill strips. For safety warning products, such as fire escape signs and car anti-collision strips, the reliability and visibility of the luminous effect should be given priority. The color selection should be based on a dark base with a high-contrast luminous color, such as black with bright yellow, to ensure that it can quickly attract attention in an emergency. For decorative products, such as children's toys and clothing accessories, more attention can be paid to the richness and personalization of colors. Through experiments, color combinations that are both beautiful and can meet basic luminous needs can be selected, such as a pink base with pink luminous powder to create a soft and unified visual effect. In addition, with the development of material technology, the emergence of new transparent or translucent masterbatches has provided more possibilities for color selection. This type of masterbatch can not only give the twill strips rich colors, but also minimize the obstruction of luminous light, so that the color and luminous effect are better compatible.
