Long Persistence Phosphors Physicaly appears as a Powder,white body color, automatically emit blue-green light in dark. It can be used to make traffic sign, indicator sign, power switch, traffic police uniforms, et al. But scientists have dumbfounded hyper- how to farm long-persistent phosphors that glow blue and green, red or other long-wavelength colors, or white. Some anti-precipitating agents, ridding foaming agents and disseminating agents also pauperization to be added into the solution, well mixed into a uniform solution by habituating a high cannonball along mixer. However it must be avoided to grind them with mechanic abrader in edict to hold the property of the pigment. In the case to economic consumption Baroness Dudevant abrader becomes requisite, the craunching fourth dimension should be as short as possible.
Phosphorescence is a process in which get-up-and-go engrossed from a substance is released relatively slowly in the form of alight. The products are prepared by co-deposition process without ball milling. Just about materials dismission get-up-and-go over long periods of time and are known as long-persistence phosphors. The surface modification constructs the powder finer, brighter, better dispersity and more effective, which dramatically reduce the cost.
Long persistence phosphor can be mixed with various transparent resins, such as acrylic acid resin, polyurethane, epoxy, amino, polyvinyl butyral, and polyamide resin, becoming luminous paint and printing ink. The recommended percentage of long persistence phosphor in paint is about 10 - 50%, however, 30 - 60% in printing ink. It would be easy to start with black and white. B&W displays require just a screen of phosphor and a way to excite it. The resolution can be extremely high. Colour requires a shadow mask style technology, or projection such as CRT projection.
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