Polymer alloy circulation mixing device

Abstract

The invention discloses a polymer alloy circulation mixing device. The polymer alloy circulation mixing device is characterized in that an eccentric distance between a machine barrel and a rotor is adjusted to generate a controllable tensile force field, along with rotation of the rotor, a push plate in a rotor sliding groove is tightly attached to the inner wall of the machine barrel under the effect of a cam and a spring, material fusion and plastifying are assisted, and polymer alloy studying and production are achieved. The polymer alloy circulation mixing device mainly comprises a material barrel, the rotor, the spring, the cam, the push plate, an end cover, a rotating shaft, a heating ring, a control system, a motor, a sliding rail, a lead screw and the like. The polymer alloy circulation mixing device has the beneficial effects that (1) on the structure, infinite loop fusion mixing of two kinds of polymer materials is achieved; (2) the strength of the tensile force field can beadjusted by changing the eccentric distance between the machine barrel and the rotor; (3) the circulation mixing process is mainly based on the tensile flow field under the positive pressure effect, and the compatible condition of polymer is facilitated; and (4) aggregates in polymer nanocomposite materials are effectively crushed, particles in the polymer nanocomposite materials are efficiently scattered, and a polymer alloy is better produced.

Description

technical field [0001] The invention relates to the field of polymer alloys, in particular to a circulating mixing device for polymer alloys. Background technique [0002] Polymer alloys are processed by mixing more than two polymer materials or polymers and other materials. The microstructure and performance of this composite system will significantly depend on the mixing equipment and process. According to current statistics, about 80% of polymer alloys are mixed through extrusion molding, an important molding process. The screw extruder for continuous blending extrusion molding is currently the most important polymer extrusion molding equipment. , which mainly realizes the plasticization and transportation of materials by shearing and dragging flow, and at the same time distributes and disperses materials through the mixing elements of the screw. In order to ensure high shear mixing and production rate, it is usually achieved by increasing the screw speed, which will cau...

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Problems solved by technology

In order to ensure high shear mixing and production rate, it is usually achieved by increasing the screw speed, which will cause insufficient plasticization in the processing process and poor quality of extruded products. The increase of the screw length-to-diameter ratio can significantly improve the mixing process. The effect also brings many problems to the processing, installation and maintenance of the extruder; finally, the mixing characteristics and structural composition of the screw extruder itself cause the molding of polymer composite materials to undergo long thermomechanical action and high material properties. Deficiencies such as dependence

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