Lanthanide activated aluminate photoluminescent pigment has a high initial luminance and long afterglow. The working principle is like this: when exposed to light of 200-450nm wavelength or visible light, some electrons in the pigment will become excited and will return to the ground state gradually by emitting visible light. So the pigment will continue to glow when light source is removed. The luminance and afterglow of photoluminescent pigment exceeds that of the conventional zinc sulfide pigment by over ten times, and also the afterglow will last for more than 20 hours. Tests by national authoritative institutions have proved that photoluminescent pigment is non-toxic and non-radioactive. Chemically stable, the functional additive could be evenly dispersed into such transparent medium as paints, inks, plastics, printing slurries, ceramics glaze, glass, and synthetic fibers to make different photoluminescent safety and decorative products.

 

 

Characteristics of Super Long Photoluminescent pigment

 

 

**Non-toxic, non-radioactive and hazard-free to human, livestock, and environment.

 

**High initial luminance, good for energy-saving lighting systems.

 

**Long afterglow for over 24 hours, could be used for directing illumination and                  emergency exit illumination in weak light.

 

**Easily chargeable by sun light, UV light and normal fluorescent light in 5-20 minutes.

 

 

**Excellent weatherability, lightfastness, ageing resistant, usable indoor and outdoor.

 

 

**Chemically and physically stable, rechargable, storable and photoluminescent with a service life of 10 years.

 

 

**Different particle diameters available ranging from 0. 5 to 150 um with uniform diameter and good dispersibility; can be incorporated in inks, paints, glass, ceramics, rubber, fiber and textiles.