Bidirectional synergistic three-screw reinforced plasticizing mixing extrusion method and equipment

Abstract

The invention discloses a bidirectional synergistic three-screw reinforced plasticizing mixing extrusion method and equipment, and the method is characterized in that homodromous rotation and incongruous rotation exist in a three-screw system at the same time so as to form a homodromous meshing area and an incongruous meshing area for cooperative work, and materials alternately and repeatedly pass through the homodromous meshing area and the incongruous meshing area in the material conveying process, so that the materials are uniformly mixed and extruded; therefore, the plasticizing and mixing effect of the material is enhanced. The device comprises a driving motor, a speed reduction distribution transmission case and a three-screw system, the driving motor is connected with the speed reduction distribution transmission case through a coupler, three output shafts in the speed reduction distribution transmission case are connected with the three-screw system through spline housings, the three-screw system comprises a main screw and two auxiliary screws, and the main screw and the two auxiliary screws are connected through a coupler. The main screw is meshed with one of the auxiliary screws in a rotating mode in the same direction, and the main screw is meshed with the other auxiliary screw in a rotating mode in the opposite direction. According to the invention, co-rotating and counter-rotating work is cooperated, so that the plasticizing and mixing effect is improved.

Description

technical field [0001] The invention relates to polymer processing technology, in particular to a two-way synergistic three-screw reinforced plasticizing mixing extrusion method and equipment. Background technique [0002] Existing screw plasticizing and mixing extruders for the processing of polymers and composite materials thereof include single-screw extruders, twin-screw extruders and multi-screw extruders. Among them, the three-screw extruder is the most widely used multi-screw extruder. The existing three-screw extruders improve the mixing effect of polymers and their composite materials by increasing the meshing zone. With the continuous development of polymer modified materials, it is necessary to improve the mixing and dispersing effect of plastic processing materials more effectively. However, the traditional method of increasing the meshing area and changing the direction of the main and auxiliary screws to improve the mixing effect of polymers is not suitable fo...

AI Technical Summary

Problems solved by technology

With the continuous development of polymer modified materials, it is necessary to improve the mixing and dispersing effect of plastic processing materials more effectively. However, the traditional method of increasing the meshing area and changing the direction of the main and auxiliary screws to improve the mixing effect of polymers is not suitable for some thermal sensitivity. For plastics, when the main and auxiliary screws rotate in the same direction, the meshing area will shear the material more, and when the main and auxiliary screws rotate in the opposite direction, the meshing area will shear the material less

Therefore, the plasticizing and mixing effect of the three-screw extruder needs to be further improved.

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