Device for manufacturing nano laminated composite material

Abstract

The invention relates to a device for manufacturing a nano laminated composite material, which comprises a plastifying device, a converging device, a laminated composite generator and a molding device which are sequentially connected in series front and back, wherein the laminated composite generator is used for averagely dividing n layers of polymer melts extruded by the converging device into m equal parts along the width direction; when each equal part of melt continues to forwards flow in the laminated composite generator, the melt is rotated for 90 degrees and broadened by m times so as to mutually converge with an adjacent melt layer into a laminated structure at an outlet end; then an identical laminated composite generator is connected in series to obtain an n*m*m structure; and if k identical laminated composite generators are connected in series, a multi-layer structure composite material with n*mk layers can be obtained. In the invention, the laminated composite generators rotating for 90 degrees after melt segmentation are adopted, thus the segmentation quantity is large, the quantity of serial units can be reduced, and the melt is easy to maintain a symmetrical structure in a flow broadening and thinning process, so that the layer thickness precision is easy to guarantee, and a nano laminated composite multi-layer product can be obtained.

Description

technical field [0001] The invention belongs to the technical field of advanced material processing, and relates to a nano-lamination composite material processing device, in particular to a device for preparing multi-layer composite structure polymer materials and products by composite extrusion or composite injection molding. Background technique [0002] Layered nanocomposites have unique advantages in mechanical properties, barrier properties, electrical conductivity, optical properties, etc., and have broad application prospects, so they have become a hot research topic in the field of materials, and have achieved some research results. A series of Multilayer extrusion dies for the preparation of layered composite polymer materials. Judging from the currently published patents, the earliest US patents 3557265, 3565985, and 3884606 were applied by W.J.Shrenk et al., and later Chinese patents CN1511694A, 200610022348.6, etc. The existing patented technology basically bel...

AI Technical Summary

Problems solved by technology

However, if this technical scheme is used to obtain nano-scale composite materials (interlayer thickness ≤ 100nm) in an extrusion die of 1mm, more than 10 splitters in series are required, because each time the melt passes through a split It is necessary to overcome a large flow resistance, resulting in a drop in pressure, and the dragging effect of the flow boundary will also cause a certain degree of damage to the layered structure, so the number of series connection should not be too many; in addition, the two melts separated from the left and right are staggered up and down Then the design method of merging together will bring great difficulties to the design of the flow channel due to the asymmetry of the flow, and the flow channel designed according to one material is not suitable for another material with a large difference in rheological parameters

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