Preparation method of epoxy acrylate ultraviolet cured coating

The invention belongs to the field of coatings, and in particular relates to a modified epoxy acrylate ultraviolet cured coating and a preparation method thereof. The preparation method comprises the following steps: adding epoxy resin and modified titanium dioxide/attapulgite nano composite powder containing an epoxy group coupling agent into an active diluent, then adding acrylic acid, a catalyst and a polymerization inhibitor, and heating to perform epoxy ring-opening reaction to obtain titanium dioxide/attapulgite modified epoxy acrylate; and adding a photoinitiator, a leveling agent and a defoaming agent into the modified epoxy acrylate, and mixing uniformly to obtain the ultraviolet cured coating. According to the preparation method, the dispersity of the titanium dioxide/attapulgite in epoxy acrylic resin is improved, and the mechanical properties including ageing resistance, impact resistance, flexibility and the like of an epoxy acrylate coating layer are greatly improved.