UV curing invisible fluorescent ink and preparation method thereof

The invention discloses UV curing invisible fluorescent ink which is characterized by being prepared from the following raw materials by weight: 1 to 2 parts of ultraviolet fluorescence pigment, 10 to 15 parts of polyethylene glycol, 3 to 4 parts of urea, 1 to 2 parts of vinyl polysiloxane, 1 to 2 parts of polyoxyethylene stearic acid ether, 16 to 18 parts of tripropylene glycol diacrylate, 4 to 6 parts of zinc stearate, 20 to 24 parts of UV unsaturated polyester, 4 to 8 parts of a 184 photoinitiator, 1 to 2 parts of an antiager MB, 1 to 2 parts of tributyl tin trichloride, 5 to 7 parts of propenoic acid-4-hydroxybutyl ester, 12 to 14 parts of o-bromostyrene, 1 to 2 parts nonylphenol and 4 to 5 parts of an additve. The additive improves the toughness of the ink, enables the ink to be dispersed uniformly, and maintains the stability of the ink; the ink has multiple frequency converting anti-counterfeiting properties, the product can be dried instantaneously, and the ink has the characteristics of economy, energy conservation and environmental protection, and can be printed on absorptive printed materials or non-absorptive printed materials.