The present invention belongs to the field of composite materials, and discloses a thermosetting polyimide-modified PEEK composite material. The composite material comprises polyetheretherketone, polyimide, carbon nanotube pre-dispersion and lubricant. The preparation method comprises: crushing thermosetting polyimide and adding it into polyetheretherketone; primarily drying the mixture, adding it into a high-speed mixer with lubricant, stirring uniformly, feeding the material into a twin-screw extruder, extruding for pelletizing, cooling for granulation, and performing secondary drying. By adding thermosetting polyimide powder and adopting a hot-pressing process, the present invention raises the high-temperature deflection temperature of polyetheretherketone to 200°C and the continuous service temperature to 230°C, improving the high-temperature resistance and wear resistance of polyetheretherketone without fiber reinforcement. Addition of carbon nanotube pre-dispersion reduces the material resistivity and achieves favorable antistatic effect, exerting a prominent effect on improving process stability of products and consistency of product quality.
Area Code: CN
Application Number: CN202411286699.2
