Extruder twin-screw for bio-based straw powder filled modified polypropylene material

The utility model discloses an extruder twin-screw for a bio-based straw powder filling modified polypropylene material, which comprises twin-screws arranged in parallel in the same direction, and a conveying section, a plasticizing section, a dispersing and mixing section and an exhaust homogenizing section are sequentially arranged in the length direction of the whole twin-screw from a feed port to a discharge port, the thread element of the conveying section is a large-lead deep-groove thread element; the screw element of the plasticizing section is a screw element with a gradually reduced lead; the dispersing and mixing section comprises a pair of forward and reverse stretching block internal mixing rotors and a tooth-shaped disc; the front end and the tail end of the exhaust homogenizing section are both provided with vacuumizing openings and large-lead thread elements, and the middle section of the exhaust homogenizing section comprises a pair of forward and reverse stretching blocks. The double-screw e