EPOXY MICROCAPSULE WITH POLYUREA AS WALL MATERIAL AND PREPARATION METHOD THEREOF

摘要

An epoxy microcapsule with polyurea as a wall material, wherein the core material of the microcapsule comprises a liquid epoxy resin, and the wall material of the microcapsule is a crosslinked polyurea prepared by an interface reaction of polyisocyanate and water, the polyisocyanate comprising ternary or more than ternary polyisocyanate. A preparation method of the epoxy microcapsule with polyurea as the wall material, comprising the following steps: dispersing a polyisocyanate and a liquid epoxy resin into water containing a surfactant to obtain a mixed solution; stirring the mixed solution for 0.5-5 hours at a temperature of 25-90°C; filtering, washing and drying, to obtain the epoxy microcapsule with polyurea as the wall material.