The present invention provides a method for preparing flame-retardant nylon 6 composite materials, comprising: weighing nylon 6 resin, MCA flame retardant, and 4-oxo-2,2,6,6-tetramethylpiperidine-1-yl radical; adding them to a mixer and stirring uniformly to obtain a premix; feeding the premix into a loss-in-weight feeder No. 1 and introducing it through the main feed port of a twin-screw extruder; and performing melt mixing, extrusion, and pelletization. The present invention significantly enhances flame retardancy by incorporating the halogen-free compound 4-oxo-2,2,6,6-tetramethylpiperidine-1-yl radical, which effectively scavenges free radicals.
Country Code: CN
Application Number: CN202211526093.2
