Stress luminescent material, method for producing stress luminescent material, stress luminescent coating composition, resin composition, and stress luminescent material

摘要

A stress-stimulated luminescent material obtained by mixing a phosphate compound and europium activated strontium aluminate particles to prepare a slurry, a pulverizing step of pulverizing the slurry to obtain a pulverized slurry, and a drying step of drying the pulverized slurry The content A of the strontium element in the obtained stress-stimulated luminescent material and the content B of the strontium element after the stress-stimulated luminescent material was held for 168 hours in an atmosphere at a temperature of 85 ° C. and a relative humidity of 85%. A stress luminescent material characterized in that the rate of change calculated by (AB) / A × 100 is 10% or less.