long persistence glow in the dark powder
Niyafu long persistence glow in the dark powder is a new type of long afterglow luminescent material. Free from any radioactive substance, it can glow in the dark automatically after absorbing varieties of visible light. The process of absorbing-emitting can be repeated forever. Being one kind of additives, it can be added in many media, such as coat, paint, ink, plastic, printing paste, ceramic, glass etc. Those luminous products applied in the powder show good effect in emergency illumination, indication and decoration. The finished articles made of our powder can be widely applied not only in personal consumption, such as switch, arts, garment, shoe and cap, stationeries, clock, fishing gear, crafts, gym articles and so on, but also in architecture, decoration, conveyor carrier, military equipment, fire fighting emergency system (entrance and exit sign, indicating system of fleeing and life-saving) etc.
Product characteristics:
1.No toxicant free from any radioactive elements, and harmless for the mankind and the earth.
2.The wavelength range of excited lights is broad, and the light sources are early and conveniently to obtain, such as the solar lights or the normal lamp.
3.After excited shortly by light source, the afterglow time of products can reach above 12 hours in the recognizable light intensity rang.
4.Excellent physical and chemical properties. The products can be utilized in the outdoors and bad conditions, which have outstanding anti-ultraviolet property. After excited by a 300 W mercury lamp for 1000 hours, the properties changed very little. The products can also resist almost all corrosive chemicals, and the use temperature ranges from -20 to 500 degrees.
5.The products can emit yellow-green,blue-violet lights and have various appearance.
6.Extremely long lifetime (15 years). It can absorb, store and emit visible lights repeatedly.
7.The pigment have various particle size(5-200um), which can be applied different situation
