High-temperature-resistant and high-elongation polyurethane acrylic resin and application thereof in preparation of ultraviolet curing peelable glue

The invention discloses high-temperature-resistant and high-elongation polyurethane acrylic resin and application of the high-temperature-resistant and high-elongation polyurethane acrylic resin in preparation of ultraviolet curing peelable glue. The preparation method of the polyurethane acrylic resin comprises the following steps: (1) sequentially adding diisocyanate and dibutyltin dilaurate into isobornyl acrylate, and dropwise adding polyolefin polyol for reaction to obtain a semi-adduct 1; (2) adding dimethylolbutyric acid into the semi-adduct 1 for reaction to obtain an intermediate product 2; (3) sequentially adding acrylic acid hydroxyl ester and a polymerization inhibitor into the semi-adduct 2 for continuous reaction to obtain an intermediate product 3; and (4) sequentially adding epoxy resin and a catalyst into the intermediate product 3, and reacting to obtain the polyurethane acrylate resin. The ultraviolet curing peelable glue provided by the invention contains polyurethane acrylate resin, has e