Application of saving type rare earth europium coordination compound/sodium acetate composite fluorescent powder in water-based ink

The invention provides composite fluorescent powder, a preparation method and application thereof in water-based anti-counterfeiting ink. According to the invention, the europium coordination compoundand sodium acetate composite fluorescent powder has excellent fluorescent performance, the dispersity and particle size distribution of the fluorescent powder are improved due to the addition of sodium ethoxide, and the europium coordination compound and sodium acetate composite fluorescent powder has good thermal stability, so that the europium coordination compound and sodium acetate compositefluorescent powder can uniformly and stably exist in water-based ink for a long time, and the ink emits fluorescence under the irradiation of the ultraviolet lamp so as to achieve a stable and long-term anti-counterfeiting effect. 本发明提供了一种复合荧光粉及其制备方法和在水性防伪油墨中的应用。本发明的铕配合物与乙酸钠复合荧光粉具有优异的荧光性能，由于乙醇钠的加入改善了荧光粉的分散性和粒径分布，具备良好的热稳定性，使得其在水性油墨中能够均匀、长期稳定的存在。使得油墨在紫外灯照射下发出荧光，达到稳定长期的防伪效果。