Stable extrusion granulation device for wood-plastic composite material

Abstract

The invention relates to the technical field of material preparation, and discloses a stable extrusion granulation device for a wood-plastic composite material. The stable extrusion granulation device for the wood-plastic composite material comprises a spherical cylinder body used for containing a mixed material for extrusion, an extrusion head matched with the spherical cylinder body in structure is arranged in the spherical cylinder body, wherein the extrusion head is driven by a driving mechanism to rotate, a spiral part for forcing the mixed material to be extruded towards the cylinder bottom of the spherical cylinder body is arranged on the periphery, corresponding to the cylinder wall of the spherical cylinder body, of the extrusion head in a winding mode, one or more discharging holes are formed in the cylinder bottom, and cutters for cutting off the extruded material is arranged at the discharging holes. The extrusion head with the spiral part is matched with the spherical cylinder body to extrude a wood-plastic composite material melt, and the material is subjected to concentrated extrusion force which is applied by the extrusion head and faces the cylinder bottom, so that a high filling effect of the wood-plastic composite material can be achieved, finally, the wood-plastic composite material is smoothly output at the discharging holes, the production process is stable and efficient, the quality of discharged particles is uniform, and the oxidative degradation rate of the material is low.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a stable extrusion granulation device for wood-plastic composite materials. Background technique [0002] Wood-plastic composite material is a new type of composite material that makes full use of agricultural and forestry waste and plastic recycled materials to prepare a dual performance of plastic processing performance and wood texture. The main raw materials of wood-plastic composites usually contain more than 50% plant fiber. The addition of high-content plant fiber will change the rheological behavior of the resin matrix, increase its viscosity, and deteriorate its fluidity, which will eventually lead to processing difficulties. [0003] The wood-plastic composite material used to produce profiles usually has a plant fiber content of up to 60%. The traditional process is mostly to blend and plasticize through a parallel twin-screw extruder, and then crush it by...

AI Technical Summary

Problems solved by technology

However, because the moisture content of plant fibers is usually as high as 10%, drying by heating equipment will directly lead to high production costs, so the plant fibers with high moisture content are usually used directly for production during pelleting, which leads to wood Plastic composite materials are prone to extrusion instability due to excessive moisture during the extrusion granulation process, and the extruded material strands will break irregularly, and even spraying may occur

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