In-situ polymerization flame-retardant nylon material as well as preparation method and application thereof

The invention discloses an in-situ polymerization flame-retardant nylon material as well as a preparation method and application thereof. The preparation method comprises the steps that a nylon monomer is subjected to a salt forming reaction, a flame retardant and complex metal ions are added into a nylon salt solution, a mixed solution is obtained, and the complex metal ions and the flame retardant can be subjected to a coordination complexation effect; and carrying out prepolymerization reaction and polycondensation reaction to obtain the in-situ polymerization flame-retardant nylon material. The preparation method provided by the invention adopts an intrinsic flame-retardant mode, the obtained nylon material has excellent flame-retardant performance, a series of defects of low flame-retardant efficiency, difficulty in dispersion, obvious reduction of comprehensive performance of the material and the like existing in physical blending are effectively avoided, and meanwhile, the thermal stability of the flam