Abstract: Degradable hyperbranched epoxy resin and a preparation method thereof, wherein the preparation method comprises carrying out a reaction between a cyclotriazine compound and a carboxyl-sourced compound to prepare a carboxyl-terminated or hydroxy-terminated hyperbranched polymer; then reacting with epoxy chloropropane to obtain a degradable hyperbranched epoxy resin of which the molecular weight is about 1,900-22,000 g/mol. After the degradable hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 2 h in a phosphoric acid solution at the temperature of 80° C., thus realizing the recycle of the epoxy resin. The invention has simple process, and the product is degradable and has self-strengthening and self-toughening functions, and is expected to be used in the fields of strengthening and toughening of epoxy resins, solvent-free coatings etc.

Abstract: Degradable sulfur-containing hyperbranched epoxy resin and a preparation method thereof. The preparation method comprises initiating a reaction of a mercaptocyclotriazine compound and a binary olefin by ultraviolet light to prepare a mercapto hyperbranched polymer; then reacting with glycidyl methacrylate to obtain a degradable sulfur-containing hyperbranched epoxy resin of which the molecular weight is about 3,000-35,400 g/mol. After the degradable sulfur-containing hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 1.5 h in a phosphoric acid solution at the temperature of 80 DEG C, thus realizing the recycle of the epoxy resin.