Flexible epoxy intumescence fire-retardant coating and preparation method thereof

The invention relates to a flexible intumescence fire-retardant coating and a preparation method thereof, and belongs to the field of functional coatings. The flexible intumescence fire-retardant coating is composed of a component A and a component B. The component A is prepared from epoxy resin, reactive diluent, synthetic elastomer, flexibilizer, a catalyst, a carbon-forming agent, a foaming agent, fire retardant, auxiliaries and solvent. The component B is prepared from a curing agent, a curing accelerator, pigment filler, auxiliaries, refractory fibers and solvent. The flexible epoxy intumescence fire-retardant coating prepared through the method has certain flexibility, and is particularly suitable for fire-retardant protection of the surface of a flexibility or deformation base material and the surface of a shapeless base material or the surface of light metal. In addition, the flexible epoxy intumescence fire-retardant coating prepared through the method has excellent water resistance, medium resistance, ageing resistance and salt-fog resistance and is suitable for fire-retardant protection of hydrocarbon fire potential risk areas in the ship, airplane and ocean environment and the petrochemical industry.