UV-recognizable photocurable fluorescent anti-counterfeiting coating and preparation method thereof

Abstract

The invention provides an ultraviolet identifiable light-curing fluorescent anti-counterfeiting paint which comprises the following components: photocurable aliphatic polyurethane resin, photocurablealiphatic epoxy acrylate, photocurable active monomer, cracking visible light initiator, spherical silicon powder, a wetting agent, a defoamer, a rheological additive, a fluorescer, and a dispersant.The invention also provides a method of preparing the paint. The paint provided by the invention can use visible light with a wavelength of 405 nm to cure the paint, have fast curing speed, low energyconsumption, environmental protection and low VOC, high construction efficiency and low construction cost; the paint provided by the invention also has good adhesion to various substrates, excellentcoating film mechanical properties, good weather resistance and scratch resistance; the paint coating provided by the invention is transparent and colorless in sunlight, which does not affect the surface appearance of the paint; and blue fluorescence with 450 to 500 nm wavelength is only emitted by the coating under the ultraviolet light with 380 nm or less.

Description

technical field [0001] The invention relates to a UV-recognizable photocurable fluorescent anti-counterfeiting coating and a preparation method thereof. Background technique [0002] Fluorescent materials are currently mostly used in indoor paints, fluorescent sticks, etc. The fluorescent materials involved are mainly organic fluorescent substances excited by sunlight, and light-curing anti-counterfeiting coatings are still blank in the market. [0003] Moreover, although the existing anti-counterfeiting coating is a water-based system, it uses heat curing, the curing speed is slow, the temperature and humidity requirements for construction are high, and there is a large amount of VOC emissions, the construction will cause serious air pollution and high energy consumption. consumption, and the surface properties of the cured coating film are poor. Contents of the invention [0004] The object of the present invention is to provide a UV-recognizable light-curable fluoresce...

AI Technical Summary

Problems solved by technology

[0002] Fluorescent materials are currently mostly used in indoor paints, fluorescent sticks, etc. The fluorescent materials involved are mainly organic fluorescent substances excited by sunlight, and light-curing anti-counterfeiting coatings are still blank in the market

[0003] Moreover, although the existing anti-counterfeiting coating is a water-based system, it uses heat curing, the curing speed is slow, the temperature and humidity requirements for construction are high, and there is a large amount of VOC emissions, the construction will cause serious air pollution and high energy consumption. Consumption, and the surface properties of the cured coating film are poor