The invention belongs to the field of
polymer flame retardation and discloses an
epoxy resin reaction-type microcapsule
fire retardant and a preparation method thereof. The
epoxy resin reaction-type microcapsule
fire retardant is characterized in that at least one
phosphorus-containing
fire retardant is utilized as a
capsule core; a product of a reaction of at least one curing agent, an
epoxy resin and
triglycidyl isocyanurate is utilized as a
capsule material; a
mass ratio of the
capsule material to the capsule core is (0.05 to 0.4): 1; and a
mass ratio of the epoxy resin to the
triglycidyl isocyanurate is (0 to 6): 1. The preparation method provided by the invention comprises the following steps of dispersing the at least one
phosphorus-containing fire retardant in at least one
solvent,heating, adding a
triglycidyl isocyanurate solution and an epoxy resin solution into the heated solution, stirring for a reaction for 10 to 30 minutes, dropwisely adding a curing agent solution into the
reaction system, carrying out a reaction process for 1 to 2 hours, heating to a temperature of 70 to 78 DEG C, carrying out a reaction process for 2 to 12 hours, cooling, filtering, washing and
drying to obtain the epoxy resin reaction-type microcapsule fire retardant. The epoxy resin reaction-type microcapsule fire retardant has uniform
granularity, good liquidity, low water-
solubility and good
polymer compatibility. Through utilization of the epoxy resin reaction-type microcapsule fire retardant, good
flame resistance, good water tolerance and good mechanical properties are obtained.