Why do outdoor light boxes turn yellow?

Outdoor light box yellowing is normal imagination. Light guide plate light box, because the light guide plate light box on both sides of the light tube is an ordinary light tube, the temperature reached 60 degrees, a long time, the light guide plate will be oxidized and yellow. Now there is an ultra-thin light box on the market called eefl ultra-thin light box, the internal use of eefl tubes side by side, because the surface temperature of this lamp is only 38 degrees, so, while improving the brightness, there will be no yellow light box surface problem.

The main causes of outdoor light boxes yellowing are aging, UV light and environmental effects. The specific reasons are as follows:

1. Aging factor

Outdoor light box after a long time of use, the material will appear aging phenomenon. In particular, plastic materials that have been used for a period of time will gradually become fragile and vulnerable due to the influence of ultraviolet light. This leads to tiny cracks or damage on the surface of the material, accelerating the process of the light box yellowing.

2, UV light effect

Outdoor light boxes are exposed to strong ultraviolet light for a long time, and UV light will destroy some chemical bonds in the material, resulting in changes in the properties of the material. This light will make the light box surface color gradually fade, and eventually appear yellow phenomenon.

3. Environmental factors

The outdoor environment is complex and changeable, and the light box is affected by many environmental factors such as temperature, humidity, and pollution. For example, the high temperature and humid environment will accelerate the oxidation process of the light box material, and the dust and pollutants in the environment will deposit on the surface of the light box, exacerbating the aging and yellowing phenomenon of the material.

In addition, the choice of outdoor light box production materials is also an important cause of yellowing. Some low-quality materials are more susceptible to environmental factors, thus accelerating the aging process. Therefore, when selecting outdoor light box production materials, its weather resistance and anti-aging properties should be fully considered. At the same time, regular maintenance and maintenance of the outdoor light box, such as cleaning the surface, checking the structure, etc., in order to extend its service life and slow down the occurrence of yellowing.