Composition and application of Luminous material
In recent years, as a new generation of long luminous pigment, rare-earth-doped alkaline earth silicates and aluminates have been researched extensively due to a growing market for their application in ceramic glazes, resins, and coating of brick and roof tiles. In this study, detailed information about luminous pigment that used in ceramic industry and their applications are given.
The use of phosphorescence glazes on brick and roofing tile supplies high quality and also attracts costumer’s attention. It is thought that such application will result in a breakthrough for national relevant industries. It was determined that newly developed, low temperature, fluorescence ability bearing glazes can be easily employed by brick and roof tile producers for various purposes.
Produced luminous pigment dye were also mixed with epoxy resin and applied on a wooden hardboard. In conclusion either decorative or functional new epoxy coating products were produced.
Since the synthesis of the strontium aluminate luminous pigment, a luminous pigment far exceeding the traditional sulfide luminous pigment in brightness, persistent time, and chemical durability, new non-radioactive long lasting luminous pigment dye received rapidly growing interest, especially the rare-earth-doped alkaline-earth aluminates. These compounds can formulate (unlike zinc sulphide compounds) to produce a range of colors. Until now, intense green and blue emitting persistent oxide glow in the dark pigment have been commercially available with beter chemical stability over sulfides. Strontium aluminate and other proprietary compounds represent a revolution in the photoluminescent industry, which has relied on zinc sulphide glow in the dark pigment for the better part of a century.
The following are taken up as application of rare earth glow in the dark pigment: incandescent electric lamp and fluorescent lamp, albedo light emitting diode, phosphor for plasma display, long persistent phosphor. Furthermore, recent development trends such as nano phosphor and stress phosphor, the combinatorial synthesis method are referred. There will undoubtedly be new and better photoluminescent pigments and products introduced in the near future, including those with different emission colors.