HOW DOES GLOW IN THE DARK PIGMENT WORK?

Glow in the dark pigment currently on the market is mainly divided into two categories: Strontium Aluminate powders and short-acting luminous powders with Zinc Sulfide.

GLOW IN THE DARK PIGMENT

Glow in the dark pigment belongs to the former. It has powerful light absorption, light storage, and luminescence. It is a light-excited and light-storing luminescent powdery crystals, after being irradiated by natural light, daylight light, ultraviolet light, etc. And then slowly releases it in a fluorescent manner after stopping light irradiation. So at night or in a dark place, we can still see the light, lasting for several hours to ten hours.

THE SHORT-ACTING LUMINESCENT POWDER

The short-acting luminescent powder containing zinc sulfide has a name called “come fast, go fast.”The so-called “come fast” means that the light absorption time is short and sensitive to the light source. And it quickly shows the luminous effect: “go fast” means that the afterglow time is short.

Its afterglow time is only 1 to 3 hours. It is easy to deteriorate and darken in strong light (such as sunlight), ultraviolet light, and humid air. Hence, its application is limited in many fields. Adding diamond and copper co-activated ZnS luminous powder has a long afterglow time. But it has an infrared quenching phenomenon. After being illuminated by electric light (including more red light), the afterglow quickly extinguishes.