The present invention relates to the field of polyamide polymer materials, specifically to a highly filled polyamide material and its preparation method. The preparation method involves feeding raw material components into a twin-screw extruder, where they are blended, melted, and extruded to produce the polyamide material. Along the material flow direction, the twin-screw extruder sequentially comprises a feeding section, a melting and plasticizing section, a mixing section, a deashing section, and an extrusion section. The screw blocks in the kneading section, arranged sequentially along the material conveying direction, comprise: forward conventional conveying screw blocks, forward large-lead deep-groove screw blocks, forward conventional conveying screw blocks, forward shear screw blocks, reverse conventional conveying screw blocks, forward conventional conveying screw blocks, forward large-lead deep-groove screw blocks, forward conventional conveying screw blocks, forward-shear screw blocks, screw blocks with grooves on the screw flutes, forward-shear screw blocks, multi-head kneading screw blocks, and reverse-conventional-transport screw blocks. This invention resolves the issue of excessive powder at the vent port and effectively reduces die deposits, thereby eliminating strand breakage.
Country Code: CN
Application Number: CN202211020639.7
