Method for recycling thermoset epoxy resin materials

摘要

A method of recycling a thermosetting resin such as acid anhydride cured epoxy resin, polyurethane resin, unsaturated polyester resin and the like is provided. The thermosetting resin is plasticized by adding an amino compound as decomposer to the thermosetting resin to produce a plasticized resin. The plasticized resin is hardened again by adding a re-hardener to the plasticized resin. For the re-hardener, a compound which works on the amino compound to cause hardening, e.g. epoxy prepolymer, is used. The amino compound breaks the network structure of thermoset resin to bond or associate with the broken network structure, and the re-hardener reacts with both of the amino compound and the plastiziced resin.