The invention discloses a
flame retardant with
nitrogen-containing
phosphonate and a synthesis method of the
flame retardant, belongs to the field of
flame retardant synthesis and particularly relatesto a flame retardant and a synthesis method thereof. The problems of large addition amount, deep color, poor durability and low flame-retarded efficiency are solved. The chemical name of the flame retardant with the
nitrogen-containing
phosphonate is polymethyl phosphonic acid
piperazine ester; the preparation method comprises the steps that dimethyl
methylphosphate is taken in a reaction container,
piperazine and a catalyst are added, sufficient stirring is conducted until the mixture is dissolved, and after heating and a reaction for several hours, fraction methyl
alcohol is collected; after the reaction is ended, cooling is conducted, and the product polymethyl phosphonic acid
piperazine ester can be obtained. A synergistic effect exists between a
nitrogen element and a
phosphorus element in the flame retardant, the two ends of each flame retardant molecule contain
amidogen, in the curing process, the
amidogen can react with
epoxy groups of
epoxy resin, so that the
epoxy resin obtain permanent flame retardance, and the
char yield of the epoxy resin is obviously increased. The flame retardant is applied to preparation of the flame retardant with the nitrogen-containing
phosphonate.