Composite noctilucent film and preparation method thereof

The invention discloses a composite noctilucent film and a preparation method thereof, and mainly relates to the field of functional materials. According to the preparation method of the composite noctilucent film, mounting glue with reasonable component proportion is prepared, and the noctilucent powder with reasonable component proportion is fused with the transparent mounting glue, so that the finally obtained composite noctilucent film has excellent light absorption efficiency and luminance; by using a high-light-transmittance protective film, the loss of the noctilucent layer during penetration is reduced, and a brightening effect is achieved; and a white base film is adopted to replace a traditional color layer, so that the reflected light of the base film and the light directly emitted by the noctilucent layer are the required color light, and the color development effect is improved. The composite noctilucent film provided by the invention has the advantages of long luminous time, high noctilucent bri