Device for preparing nano laminated composite material with adjustable layers

Abstract

The invention discloses a nano-lamination composite material preparation device with adjustable layers, which includes a plasticizing feeding device, a confluence device, a flow divider, a die, a composite lamination device, a rear port die and a molding device connected in series. , the plasticized melts of n plasticizing feeding devices are stacked together through the confluence, and then divided into 4 parts along the width direction when passing through the diverter, and then each part of the melt flows to the die part of the straight channel, the die It can be adjusted to the initial position with four inlets connected or the second position with two inlets connected by rotation. The outlet of the die is connected to the composite stacker. By adjusting the position of the die, it can be finally laminated to form 4n×mk or 2n×mk The multi-layer structure composite material of the layer continues to flow through the forming device to obtain the final product. The composite laminator adopted by the invention has high layering efficiency, the number of series units can be reduced, the pressure loss can be greatly reduced, and the number of layers of the finally obtained composite product can be changed by rotating the position of the die.

Description

Technical field [0001] The invention belongs to the technical field of advanced material processing, and relates to a nano-laminated composite material preparation device with an adjustable number of layers, which can prepare multi-layer composite structure polymer materials and products through composite extrusion or composite injection molding. Background technique [0002] Micro-nano laminated composite materials have unique advantages in mechanical properties, barrier properties, electrical conductivity, optical properties, etc., and have broad application prospects, so they have become a research hotspot in the field of materials. Currently, the published patents include the earliest US patents 3557265, 3565985, 3884606, and later Chinese patents CN1511694A, 200610022348.6 and so on. A recent invention patent 2009202718783 discloses a nano-laminated composite material preparation device, which breaks through the limitation of the original technology of dividing into two, and...

AI Technical Summary

Problems solved by technology

A recent invention patent 2009202718783 discloses a device for preparing nano-laminated composite materials. , to obtain composite materials with different layers, it is necessary to change the series number of laminated composite generators, the operation is complicated and inflexible

Moreover, from a practical point of view, the number of inlets m of the laminated composite generator should not be too large, because too many openings will not only bring greater difficulty to the processing of the laminated composite generator, but also lead to the final melt flow Inhomogeneity, which affects the molding quality of laminated composites

On the other hand, the series connection of laminated composite generators should not be too much, because as the number of series connection increases, the flow resistance increases, and the back pressure generated continues to increase, which may even cause flash when the composite melt is formed.

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