Polycarbonate oligomer, preparation method thereof, curable composition, cured epoxy product and method for aminolysis degradation of cured epoxy product

The invention provides a polycarbonate oligomer which has a structure as shown in a formula (I), and R1, R2, X, n and a in the formula (I) are as defined in the specification. Therefore, the waste polycarbonate is prepared into the polycarbonate oligomer by utilizing an alcoholysis principle, so that the polycarbonate oligomer has good processability and can be used as an epoxy resin hardener to be directly mixed with epoxy resin and cured, and the obtained cured epoxy resin has good physical properties and degradability, thereby achieving the aim of recycling the waste. 本发明提供一种聚碳酸酯寡聚物，其具有如式(I)所示的一结构，式(I)中R1、R2、X、n及a如说明书中所定义者。借此，将废弃聚碳酸酯利用醇解的原理制成聚碳酸酯寡聚物，使聚碳酸酯寡聚物具有良好的加工性，可作为环氧树脂硬化剂直接与环氧树脂混合并固化，且所得的环氧固化物同时具有良好的物性及可降解性，达成废弃物循环回收的目的。