The present invention discloses a twin-screw extruder, a shearing element thereof and a preparation method thereof, belonging to the field of twin-screw extruders. The shearing element for the twin-screw extruder comprises at least two shearing blocks, the shearing blocks are respectively fixedly connected to the same mandrel, the end faces of adjacent shearing blocks are in contact with each other and arranged in a staggered manner, and the shearing blocks are eccentrically arranged relative to the axis of the mandrel. The gap between the shearing element and the inner wall of the extruder barrel is large at one end and small at the other end, and the melt can easily flow through the place with a large gap. On the one hand, it can reduce the shear strength to avoid damaging the lamellar structure; on the other hand, it can increase the transverse reflux to produce a better mixing effect. When speckle masterbatch is added through side feeding, a modified material with a large speckle effect can be prepared.
Country Code: CN
Application Number: CN202410296297.4
