Based on the solubilities of three kinds of epoxy resins and three kinds of modified resins and three kinds of curing agents in 77 kinds of solutions at 25～80℃ obtained by experiment

the Hansen solubility parameters of polymers were calculated.The solubility parameters can be used to calculate the overlap rate of epoxy resin- modified epoxy resin system

epoxy resin-curing agent system and epoxy resin-modified resin-curing agent system

which in turn can be used to calculate the Flory-Huggins interactive parameters χ12.The results of the overlap rate were used to choose suitable co-solvents and solvent formulas.They could also be used to match different resins and prepare anticorrosive and antifouling self-stratifying coatings.The miscibility of the solvent-free curing system was predicted by the value of χ12 or the phase equilibrium calculated by χ12.The resins and curing agent system which form an anticorrosive and antifouling self-stratifying coating could be chosen from their experimental data of Hansen solubility parameters.If the modified resin had enough time to diffuse to the surface and stratify with the aid of an appropriate mixed solvent

optimum effect and performance of the coating could be obtained.