The invention discloses an anti-
ultraviolet hardened
coating for a PC material and a preparation method of the anti-
ultraviolet hardened
coating, and relates to the technical field of coatings, the anti-
ultraviolet hardened
coating is composed of an internal connecting layer, a middle functional layer and an external protective layer, the internal connecting layer contains an
epoxy group-containing
siloxane coupling agent, and the internal connecting layer is covalently connected with hydroxyl after being subjected to surface
plasma activation of the PC material to generate hydroxyl, so that the
adhesive force of the coating is enhanced; the middle functional layer contains ZnO-S < 2 > nano particles, a
benzotriazole derivative and modified
polyurethane acrylate, the ZnO-S < 2 > nano particles are of a core-shell structure formed by coating ZnO with S < 2 >, the S < 2 > shell layer inhibits the photocatalytic activity of ZnO and improves the
dispersity, and the
benzotriazole derivative serves as an anti-ultraviolet functional component, so that the photocatalytic activity of ZnO is improved, and the photocatalytic activity of ZnO is improved. A
disulfide bond and a
Schiff base structure are introduced into modified
polyurethane acrylate through modification preparation, the
disulfide bond can inhibit free radical
chain reaction and reversible fracture / recombination under mechanical stress, and the
Schiff base structure can capture Fe < 3 + > / Cu < 2 + > generated by PC degradation and inhibit
catalytic oxidation of
metal ions, so that the anti-ultraviolet performance and mechanical performance of the material are enhanced.