Ionic waterborne epoxy modified curing agent and preparation method thereof

The invention relates to the field of curing agents, in particular to an ionic waterborne epoxy modified curing agent and a preparation method thereof.The method comprises the following steps that 1, a main material is added into a container, heated to 80-95 DEG C and continuously stirred; 2, auxiliary materials are added into the completely-molten main materials, and the materials are heated to 150-180 DEG C; 3, adding an additive into the container, cooling to 80-100 DEG C, and continuously reacting; and 4, cooling to normal temperature, discharging, and collecting. The ionic waterborne epoxy modified curing agent is prepared from the following components in parts by weight: 140 to 180 parts of thiourea; 100 to 160 parts of a compound cross-linking agent; 280 to 300 parts of epoxy resin; 120 to 150 parts of a solvent; 30 to 50 parts of long-chain amine; 30 to 35 parts of diglycidyl ether; 40 to 60 parts of alicyclic polyamine; 15 to 21 parts of aliphatic polyamine; 15 to 25 parts of a reactive diluent; 10-1