The invention relates to the field of
polyurethane resin, and particularly discloses 3D printing light-cured
polyurethane resin as well as a preparation method and application thereof. The 3D printing light-cured
polyurethane resin is prepared from the following raw materials in parts by weight: 60-80 parts of a polyurethane
acrylate prepolymer, 15-25 parts of a diluting
monomer, 8-12 parts of a dispersing filler, 6-8 parts of a
photoinitiator and 3-5 parts of a stabilizer, the polyurethane
acrylate prepolymer is prepared from aliphatic diisocyanate,
trimethylolpropane diallyl
ether, dipentaerythritol hexaacrylate, o-phenyl phenoxyethyl
acrylate and a catalyst, and the polyurethane acrylate
prepolymer is prepared from the aliphatic diisocyanate, the
trimethylolpropane diallyl
ether, the dipentaerythritol hexaacrylate, the o-phenyl phenoxyethyl acrylate and the catalyst; the polyurethane resin prepared by the invention has relatively good flexibility and elasticity,
low shrinkage rate and low possibility of deformation, and can be applied to products with complex structures and
high dimensional requirements, such as soles and underwear mold cups prepared by 3D printing.