The invention relates to a UV
polyurethane acrylate self-repairing
coating as well as a preparation method and application thereof. The self-repairing
coating comprises the following components in parts by weight: 30-50 parts of polyisocyanate, 10-30 parts of
polymer polyol, 0-5 parts of a micromolecule chain
extender, 5-40 parts of an
acrylate end-capping
reagent, a
polymerization inhibitor and a catalyst which account for 50-200ppm of the total raw materials, and a diluting
monomer which accounts for 10-30 parts of the total raw materials. The UV
polyurethane acrylate self-repairing
coating provided by the invention has excellent thermal self-repairing performance, excellent smooth hand feeling, excellent
stain resistance, excellent high glossiness, relatively high elongation and excellent
carburetor resistance, and compared with a traditional UV
polyurethane acrylate self-repairing coating, the UV polyurethane acrylate self-repairing coating provided by the invention has the advantages that the UV polyurethane acrylate self-repairing coating has excellent thermal self-repairing performance, excellent smooth hand feeling, excellent
stain resistance, excellent high glossiness, relatively high elongation and excellent
carburetor resistance; by using polyisocyanate as a matrix and various
polycaprolactone modified acrylic ester as an end-capping
reagent, the soft-segment and hard-segment structures of the material can be well balanced, so that the material has good
carburetor resistance while having good elongation.