This invention discloses an outdoor signage energy-storage self-luminous material and its preparation method in the field of energy-storage self-luminous
material technology. The energy-storage self-luminous material is a three-layer board, including a top layer, a middle layer, and a bottom layer. The raw materials, by
mass percentage, include: 5%-45% dual-mechanism heat-sensitive luminescent
powder; 50%-90%
thermoplastic matrix; 0.1%-0.5% intelligent photothermal response additive; 4.0%-4.5% reinforcing filler; and 1.2%-2.5% weather-resistant protective component. The dual-mechanism heat-sensitive luminescent
powder is composed of SrAl2O4:Eu... 2+ ,Dy 3+ Long
afterglow powder and NaYF4:Yb 3+ Er 3+ After mixing with SiO2 upconversion powder, the mixture undergoes sequential
chelation with 3-hydroxy-2-
naphthoic acid-boronate, inorganic
silicon-
oxygen copolymerization, and fluorosilane crosslinking, followed by
drying and curing. This invention, through the synergistic effect of multiple structures and components, comprehensively optimizes the luminescent properties,
weather resistance,
mechanical stability, and intelligent adaptability of outdoor signage materials, providing reliable
technical support for the upgrading of outdoor signs such as road
safety signs, highway signs, and tunnel emergency signs.