A method for preparing high-absorptive-agent-content absorptive fibers via melt spinning, comprising the steps of: taking a polymer and extruding it through a twin-screw extruder to obtain a skin masterbatch; taking the same polymer, adding absorptive agents and coupling agents, and extruding it through a twin-screw extruder to obtain a core masterbatch with a mass fraction ratio of absorptive agents to polymer of 1:10 to 1:1; Selecting a skin-core spinning assembly for coaxial melt spinning, extruding the skin-layer masterbatch and core-layer masterbatch as skin material and core material respectively from the assembly to obtain primary fibers; and obtaining skin-core structured absorptive fibers through drawing and heat setting. This invention employs a coaxial melt spinning process to prepare high-absorbency wave-absorbing fibers. Through subsequent stretching and heat setting, the resulting fibers exhibit excellent wave absorption performance across the 18GHz to 2GHz frequency range. They find broad application in both civilian and military sectors, not only shielding electronic devices from electromagnetic interference but also enhancing the stealth capabilities of military weaponry.
Country Code: CN
Application Number: CN202310421914.4
