UV adhesive and preparation method thereof

The invention relates to a UV adhesive and a preparation method thereof. The UV adhesive comprises the following components in parts by mass: 40-60 parts of a monomer; 30 to 40 parts of a reactive diluent; 1-5 parts of a photoinitiator; the research of the applicant finds that when 40-60 parts of the monomer, 30-40 parts of the reactive diluent and 1-5 parts of the photoinitiator are used together, the coating is not prone to yellowing and cracking after long-time illumination, and the weather resistance and the aging resistance are relatively good. Moreover, when the monomer is acrylic resin and the reactive diluent is an acrylate reactive diluent, the UV adhesive is aging-resistant and printable, and can be made into colored adhesive. The colored glue is good in coloring degree and leveling effect, has certain anti-sagging performance, is particularly outstanding in aging resistance after being cured, and can resist high temperature, high humidity and outdoor accent light environments ...