Aerogel modified polyamide filament and preparation method thereof

The invention discloses aerogel modified polyamide filament and a preparation method thereof. Aerogel is spherical, small in particle size and uniform in size, the aerogel is subjected to in-situ polymerization to prepare aerogel master batch and then high-speed melt spinning is performed to prepare the aerogel modified polyamide filament. In the aerogel modified polyamide filament, aerogel microspheres are uniformly dispersed, the influence on the spinning condition and the physical property of the polyamide filament is small, and the prepared aerogel modified polyamide filament is higher in heat preservation rate when being used in an extremely cold environment. According to the preparation method of the aerogel modified polyamide filament, the influence of the addition of the aerogel on the production continuity, the production efficiency and the yarn quality of the polyamide filament is weakened, and the product physical property and the production efficiency of the aerogel modified polyamide filament are