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Photoluminescent pigment

Photoluminescent pigment or photoluminescent glow-in-the dark powder is actually called phosphorescent crystals or pigments. It is delayed luminescence or called long "afterglow" luminescent pigments. It re-emits visible light by absorption of invisible ultra violet (UV) and daylight and artificial electric lights. Simply means that it absorbs various lights and then glow in the dark or dark place and can be used repeatedly. When this occurs, they emit energy in the form of visible light without any chemical reaction. They can be evenly spread as an additive among the transparent agents such as coating, ink, paint, plastics, cereal, glass, fiber to activate the emitting functions of the agents.
The pigment takes on its natural color in bright places and emits different colors of lights in darkness. It can be used for emergent lighting, indication marks and embellishment. The products made from the pigment can be safely applied to both daily consumables like apparel, footwear, stationery, switch, fishing kits and the systems of transportation, military, architecture, etc.

Type JUP-4210 JUP-4220 JUP-4110 JUP-4710
Component Alkaline earth aluminates activated by rare earth ions
Body color yellowish yellowish yellowish white
Emission color yellow-green blue-green blue violet
Average particle size (D50)


Initial luminance >16000mcd/m² >4500mcd/m² >2000mcd/m² >1300mcd/m²
Afterglow time >12hrs >11hrs >8hrs >8hrs
1.Non radioactive 

The pigments are free from any radioactive substance such as promethium, thus they are safe in a wide range of applications.

2.Excellent stability of physical & chemical properties

The pigments can be used under temperatures ranging from as high as +500°C to as low as -20°C without deterioration of its light emission function. (temperatures lower than -20°C have not been experienced yet)

(1) Short time charging and excellent endurance

The pigments can be recharged almost indefinitely as per its stable crystal structure. It can be used for outdoor applications.

(2) Good photo-resistance

The pigments do not change its color or deteriorate even under irradiation of a 300W high pressure mercury lamp for 1000 hours.

(3) Chemicals resistance

The pigments are stable chemical and can resist most chemicals. But it will be decomposed into metal oxides when in contact with water and then caused losing luminance.

(4) Environmentally friendly

The photoluminescent pigments are free from cadmium, lead, mercury, arsenic, chromium, antimony and selenium. (test results by part 3 of EN71, ASTM of USA and MSDS) which will not post any threat to the environment.

Physical and optical properties of photoluminescent pigments 

1. The crystals are dark soaked for 24 hours before exposing to fluorescent light of 1000lux (a 27W fluorescent lamp at 60cm distance in perpendicular direction) for 30 minutes, and the initial luminance is measured from the 10th second after irradiation is stopped.

2. Afterglow time means that it takes for the luminance to decay down to 0.32mcd/m².

Test method: After keeping the luminescent material from exposure of light for 24 hours under conditions of 25°C, 60% humidity, put 0.2g of photoluminescent powder respectively in a dish with diameter 10mm made of aluminum, put the dish under a 27W luminescent lamp at 60cm in perpendicular direction (about 1000 lux), irradiate it for 30 minutes, stop the irradiation and then measure the luminance with time passing with a luminance meter. 


High brightness: the powder with 45-65μm  is the best glow effect, suitable for integrating into plastic molding (extrusion). This model is difficult to be used in screen printing application due to its large particle size.

Medium brightness: the powder with 25-40μm is suitable for most of the product purposes. Initial glow brightness is not as good as size 45-65μm model but close to the long after glow effect. They can be used for plastic molding (extrusion) and screen-printing. 

Low brightness: the powder with 10-20μm allows the best screen printing quality but initial glow brightness is weaker comparing to the other two available particle sizes.

Paints, Coating, Inks

Luminescent paints and screen printing inks: suitable for coating or printing luminous figures, and patterns on the surface of body, clothes, caps and etc.

Photoluminescent masterbatch

Luminescent masterbatch is a new kind of self-glowing materials, made by mixing luminous pigment with transparent plastic resin. It can be made into various articles by cast, extrusion, coating. It can be applied into toys, watch, switches, buttons, handles, plastic board as well as anti-slippery slips.

Photoluminescent signs, film & tape

Luminous signs can be widely used in traffic, fire control, marine signs for ships, emergency escape routes, nameplate and all kinds of public sites, sceneries.

In chemical fibers

Using fine photominescent pigment can make luminescent fibers with different luminous effect.


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