Preparation method for high-performance LED encapsulation material

• Main Authors: YANG HUI, FAN XIANPING, HAO RONG, ZHAN SHULIN, QIAN XIAOQIAN, SHEN QIANHONG
• Format: Patent
• Language: Chinese; English
• Published: 01.06.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INORGANIC CHEMISTRY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to preparation of an encapsulation material and aims to provide a preparation method for a high-performance light-emitting diode (LED) encapsulation material. The preparation method comprises the following steps of: under the stirring condition, slowly adding mixed solution of butyl titanate and absolute ethanol into hydrochloric acid aqueous solution; hydrolyzing, polymerizing and ageing to obtain sol; centrifuging the sol at a high speed, peptizing and scattering the sol into the absolute ethanol to prepare hydroxyl-containing sol with the function of titanium dioxide; adding an organic silicon monomer mixture into the sol with the function of titanium dioxide, adding an acid catalyst to adjust the pH value, reacting under stirring, and removing the solvent by evaporation to obtain the final product. By the liquid phase preparation method, the surface hydroxyl content of a titanium dioxide functional particle is increased, the reactivity of the titanium dioxide functional particle is e