Phosphorus-nitrogen triazine flame retardant containing P-C bond and preparation method thereof

The invention discloses a P-C bond-containing phosphorus-nitrogen triazine flame retardant and a preparation method thereof, amino in 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine and aldehyde group in furfural are subjected to typical Schiff base synthesis reaction, and then P-H bond and C = N bond are subjected to nucleophilic substitution reaction, the preparation process is simple, the reaction condition is mild, and the yield is high; in the preparation process, an intermediate does not need to be separated and purified, no toxic or harmful gas substance is generated, the use of a traditional acid-binding agent such as triethylamine or pyridine is avoided, the flame retardant effectively prevents the pungent smell from causing great harm to a human body and the environment, and the phosphorus-nitrogen triazine flame retardant containing the P-C bond belongs to an intumescent flame retardant and has a remarkable flame retardant effect. 本发明公开一种含P-C键磷氮三嗪阻燃剂及制备方法，通过2,4,6-三(4-氨基苯基)-1,3,5-三嗪中的氨基与糠醛中的醛基发生的典型的席夫碱