Anti-yellowing bright uv paint and its production process

Abstract

The invention relates to anti-yellowing bright UV paint, which belongs to the technical field of coatings, and comprises the following components in parts by weight, 35-50 parts of polyurethane acrylate, 15-25 parts of ethyl ester, 8-12 parts of butyl ester, photosensitive trigger 2-5 parts of UV monomer, 11-17 parts of UV monomer, 0.4-1 part of leveling agent, 8-13 parts of cellulose acetate butyrate, 1-3 parts of fluorescent whitening agent OB-1, and 1-3 parts of fluorescent whitening agent OB ‑1 undergoes the following modification steps: S1: Add the fluorescent whitening agent OB‑1 to water, and disperse it ultrasonically for 10 minutes; S2: Add water glass under constant stirring, and then add concentrated sulfuric acid drop by drop to adjust the pH to 5‑ 7. Then heat in a water bath to 40-50°C, heat at a constant temperature for 4-6h, suction filter after the reaction, dry at 70-80°C for 8-10h, and calcine at 300°C for 8-10h. The invention has the effect of improving the anti-yellowing performance in the later stage.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-yellowing bright UV paint and a production process. Background technique [0002] At present, UV paint is ultraviolet photocuring paint, also known as photoinitiated coating and photocuring coating. Unlike PU, PE, NC and other paints named after the film-forming substances, UV paints are named after the curing method of the paint. It is automatically rolled and sprayed onto the surface of the furniture board by machinery and equipment. Under the irradiation of ultraviolet light (wavelength 320-390nm), the initiator is decomposed, free radicals are generated, the resin is reacted, and the film is instantly cured. [0003] The main components of the existing UV paint are composed of photosensitive resin, active diluent, photoinitiator and auxiliary agent. The coating uses high-energy ultraviolet light as the curing energy, and the photoinitiator in the coating absorbs the...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: there are unsaturated double bonds, peroxides, etc. in the UV paint. After long-term light, the unsaturated double bonds, peroxides, etc. of the UV paint will be oxidized and turn yellow. Later yellowing, resulting in yellowing of the paint film, which cannot meet the requirement of high whiteness