What are the functions of a twin-screw extruder?

The twin-screw extruder has the extruder principle of a single screw extruder: solid transportation, melting, pressurization, and pumping mixed stripping and devolatilization, but it is not just that. The preliminary research on twin-screw extrusion theory was late, and coupled with its various types, the shape of the screw is messy, and the extrusion process is chaotic, which brings many difficulties to the research.

Overall, the research on twin-screw extrusion theory is still in its initial stage, which is known as' technology over science ' From the discussion of its extrusion process, it can be roughly divided into three stages: the modification of the physical state of the polymer during the extrusion process, the transportation principle of the solid melt, the refinement and regulation of the exhaust gas bottom, and the establishment of mathematical and physical models to guide the planning of twin-screw extruders and the optimization of the extrusion process.

To understand the actual changes in the physical state of two or more polymers and materials during the extrusion process, the process of mixing shape and structural changes, and the connection between the final mixture and function. As a twin-screw extruder, the internal relationship between the reaction process, speed, function, screw configuration, and operating conditions during extrusion reaction molding is established as a model to guide reaction molding extrusion.