Photoluminescent powder are unsaturated pigments, which can absorb any visible light (including ultraviolet light) and store light energy, and can be activated by rare earth elements in the dark to release light energy, and can be recycled indefinitely. Rare earth long afterglow luminous powder is made of SrCO3 strontium carbonate +AlO2 alumina +Eu2O3 europium oxide +Dy2O3 dysprosium oxide+H3BO3 boric acid by sintering at high temperature of 1400℃ and mechanical crushing. The average particle size is 2~100 microns. After 10~30 minutes of sunlight or indoor light irradiation (including ultraviolet light), the initial glow brightness is 2000~30000 mcd/m2, the luminous duration (luminous brightness is greater than 10 mcd/m2) reaches 8~14 hours, and the glowing brightness decays to the lower limit of human naked eye observation (0.32 mcd/m2). Compared with the traditional zinc sulfide glow in dark powder, it has the advantages of stable chemical properties, high luminous brightness, non-toxic and non-radioactive.
Super bright yellow green luminous powder
The initial brightness of super bright and long afterglow yellow-green luminous powder is 2-3 times that of ordinary luminous powder. It is the top performance product in the industry at present. The composition can be expressed as: Al2O3•(Sr, Mg, Ca) O: (EU, La, Dy)B, and its physical structure is an oblique crystal structure with weak alkalinity.
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