Alkali earth aluminate-silicate photoluminescent pigment which is activated by rare-earth elements and Method for producing of the same

摘要

according to the invention, activated by a rare earth element alkaline earth metal aluminate-silicate photoluminescent pigment has a high initial strength and excellent light-emitting properties such as a long afterglow time. Luminescent plastic, in the manufacture of rubber, and ceramic glaze coating can easily be used, because the pigment of the present invention can be easily crushed and sintered in a neutral aqueous medium to a powder. Pigment of the present invention has the formula of Formula 1: ; [Formula 1] ; MO.aAl ₂ O ₃ bSiO ₂ cL: fX ; The expression ; MO is SrO, CaO, MgO and at least one of oxides selected from BaO, and; ; L is selected from inorganic mineralizer, and; ; X is selected from the rare earth element activated and the; ; a, b, c and f are represented by the number of moles variable Im. ; pigments of the present invention is selected element that is filled with gas or the selected component material, and a reducing atmosphere, in a controlled environment of a temperature of 1200 to 1450 2 to 4 followed by firing for a time to obtain a sintered body, and is produced by the production of a sintered body as finally photoluminescence pigment.