A new type of environmentally friendly photoluminescent pigment

Dy is a new type of environmentally friendly photoluminescent pigment , has attracted wide attention from researchers . Currently, the new luminescent pigments researchers to explore some novel methods for preparing the luminescent pigments.
High temperature solid-phase method is the preparation of Eu2 + activated strontium aluminate luminescent materials and traditional method of application of the first maximum . The law mainly Al2O3, SrCO3, Eu2O3, Dy2O3 as raw material , Glow in the dark pebbles amount of flux ( such as boric acid ) , mixed Ground, generally the first high temperature (1350 ℃ or so ) calcined , and then restored at a slightly lower temperature that Eu3 + becomes Eu2 +, reducing atmosphere can be 2% H2 +98% N2 to create , we can use a confined photoluminescent pigment active carbon . Finally, after cooling , fine grinding and sieving to obtain the product . This method is very obvious advantages of simple process , microcrystalline crystals of good quality, suitable for industrial production .