Preparation process of a luminous scratch-off painting coating and scratch-off painting

Abstract

This application relates to the field of coating composition preparation technology, specifically disclosing a process for preparing a luminous scratch-off painting coating and a scratch-off painting itself. The coating composition includes a base color-developing coating and a top layer of scratchable overlay coating. The base layer components contain acrylic-modified water-soluble starch resin, highly saturated colored organic pigments, aluminate long-afterglow luminous powder, organophosphonate chelating agents, and aziridine crosslinking agents. The top layer components contain water-based acrylic-vinyl acetate copolymer emulsion, high-pigment carbon black, magnetic iron oxide micropowder, and cesium tungsten bronze powder. The preparation method involves separately preparing the base layer main agent, crosslinking agent, and top layer slurry. After substrate pretreatment, the mixture is formed through layered coating, gradient drying, and segmented tension release processes. This composition can be used for the large-scale production of luminous scratch-off paintings for cultural and creative products, simultaneously achieving daytime color development, nighttime luminous performance, and coating adhesion, solving the problem of balancing the core performance of existing products. It also possesses the advantages of smooth scratching and stable storage.

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