Fast-curing molding process for epoxy resin based on electromagnetic induction heating

A fast-curing molding process for epoxy resin based on electromagnetic induction heating, comprising the following steps:

• S1, mixing epoxy resin A glue and a protein-grafted manganese-zinc-iron oxide nanomaterial into a colloidal state to obtain a mixture, and grinding the mixture for 10 to 30 min;
• S2, adding epoxy resin B glue to the mixture in S1, and performing ultrasonic dispersion at 20 to 30° C. for 10 to 30 min;
• and
• S3, placing the mixture obtained after ultrasonic dispersion in S2 in a vacuum environment for 20 to 40 min, then taking the mixture out and injecting the mixture into a mold, placing the mold and the mixture into an electromagnetic induction heater, placing the electromagnetic induction heater in a magnetic field environment with a magnetic field intensity of 1 to 1.5 mT for 2 to 3 h, cooling and then taking them out to obtain a cured epoxy resin, wherein
• a method for preparing the protein-grafted manganese-zinc-iron oxide nanomaterial comprises the following steps:
• S1, dissolving gelatin powder in 50 to 60 mL of acetic acid solution, stirring magnetically at 50 to 60° C. for 50 to 60 min, then cooling to 20 to 30° C., then adding a manganese-zinc ferrite nanomaterial and performing ultrasonic treatment for 10 to 20 min;
• and
• S2, performing suction filtration on the ultrasonically-treated mixed solution, washing the mixed solution with deionized water for 3 to 5 times, drying for 10 to 12 h, and grinding to obtain the protein-grafted manganese-zinc ferrite nanomaterial;
• a mass ratio of the epoxy resin A glue to the epoxy resin B glue to the protein-grafted manganese-zinc-iron oxide nanomaterial is 10:(3-3.5):(1.8-2.5);
• and
• a mass ratio of the gelatin powder to the manganese-zinc ferrite nanomaterial is 1:(2-3).