本发明公开了一种高折射率LED封装胶材料的制备方法，本发明采用的相转移方法可用于在两液相间转移纳米粒子。通过使用相转移技术，分散在水相中的纳米粒子可以转移到有机相中，原因是包覆磷酸类改性剂的纳米氧化锆颗粒在极性小的溶剂中溶解性更大，因此很容易从水中转移到有机相中。相较于其他方法，相转移法所需环境要求较低，操作较简单，成本较低，非常适合大量制备具有高分散性的纳米氧化锆颗粒及高折射率复合封装胶材料。该方法既能制备出分散性好、颗粒小而均匀的纳米氧化锆颗粒，又能使氧化锆富集在溶剂中形成高固含量的纳米氧化锆分散体。且反应条件易于控制，具备大规模工业化生产条件。

The invention discloses a preparation method of high refractive index LED packaging adhesive material, and the phase transfer method adopted by the invention can be used to transfer nanoparticles between two liquid phases. By using the phase transfer technique, nanoparticles dispersed in the aqueous phase can be transferred to the organic phase because zirconia nanoparticles coated with phosphoric acid modifiers are more soluble in less polar solvents and therefore easily transferred from water to the organic phase. Compared with other methods, phase transfer method requires lower environmental requirements, simpler operation and lower cost, which is very suitable for mass preparation of nano-zirconia particles with high dispersion and high refractive index composite packaging materials. This method can not only prepare nano zirconia particles with good dispersion, small and uniform particles, but also enrich zirconia in solvent to form nano zirconia dispersions with high solid content. And the reaction conditions are easy to control, with large-scale industrial production conditions.