All-solid-phase Eu and Dy activated strontium aluminate fluorescent powder and preparation method thereof

• Main Authors: LAN DEJUN, LEE IN-WON, CHEN XIAO'E
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

The invention discloses all-solid-phase Eu and Dy activated strontium aluminate fluorescent powder and a preparation method thereof, and belongs to the field of synthesis of inorganic fluorescent powder materials. The all-solid-phase Eu and Dy activated strontium aluminate fluorescent powder is prepared from the following raw material components: a strontium compound, an aluminum compound, an Eu solid compound, a Dy solid compound, urea and a fluxing agent. According to the preparation method, all the raw materials are in a solid state, no liquid medium needs to be added, and all the solid materials are crushed and mixed through a blade type high-speed crusher. The fluorescent color of the prepared all-solid-phase Eu and Dy activated strontium aluminate fluorescent powder is yellow green, the residual luminance is still obvious after optical excitation is terminated for 10 hours, and the problems that the energy consumption is high and the temperature fluctuation during synthesis is violent and is difficult t