abstract |
The invention discloses the application of an organic polyamine containing a spiro ring structure as an epoxy glue curing agent. The invention also discloses a high toughness acid-degradable epoxy glue. The epoxy glue comprises, in parts by mass, 100 parts of epoxy resin, 10-60 parts of organic polyamine containing a spiro ring structure and 0-6 parts of catalyst. The epoxy glue cured material obtained by the invention has the properties of high bonding strength, good toughness and can be degraded under acidic conditions, and can be used in coatings, adhesives, matrix resins of glass fiber or carbon fiber composite materials and the like. |