A continuous production process of aluminum honeycomb panel

Abstract

The invention discloses a continuous production process of aluminum honeycomb panels, which mainly includes the steps of mixing, gluing, billet formation, squeegeeing, static pressure cooling and solidification, using polyurethane two-component reactive hot melt adhesive as the aluminum plate and aluminum honeycomb The adhesive between the cores allows the glue to obtain a higher initial adhesion with less static pressure cooling time, which greatly reduces the waiting time, thereby realizing continuous production, greatly improving production efficiency, and can reduce The amount of glue applied can reduce the weight of the aluminum honeycomb panel, increase the specific strength, and reduce the production cost. At the same time, the polyurethane two-component reactive hot melt adhesive has good and stable bonding performance, including excellent bonding strength, and can withstand high Low temperature cycle impact improves the quality of the product.

Description

technical field [0001] The invention relates to the technical field of composite panel production, in particular to a continuous production process for aluminum honeycomb panels. Background technique [0002] Aluminum honeycomb panel refers to a composite panel with a three-layer structure of "aluminum panel / aluminum honeycomb core / aluminum panel". The aluminum panel and aluminum honeycomb core are bonded with an adhesive. This composite panel has high strength, light weight and no formaldehyde. It is widely used in the interior and exterior decoration of large buildings, as well as the compartment partitions of aircraft or ships, and is now further expanded to the fields of furniture panels and other fields. The key to the manufacturing and production of aluminum honeycomb panels is to select a suitable adhesive to bond the aluminum panels to the honeycomb core firmly, to meet the performance requirements of customers, and to control production efficiency and cost. [0003...

AI Technical Summary

Problems solved by technology

The solution of polymer hot melt adhesive film has the advantages of high production efficiency and high strength, but the main problems are: high cost, because the thickness of the film used is large and the price is high; durability is not good enough, because the high Molecular hot melt adhesive film is thermoplastic, and the bonding with the substrate is only physical bonding without any chemical reaction, so its high and low temperature resistance, creep resistance and other properties are not good enough, and its market share in the existing market than very small

The solution of two-component liquid glue has the advantages of high bonding strength and good durability, but the main disadvantage is that the production efficiency is low, and it is difficult to realize continuous production, because after the glue is assembled, the blanks need to be compared. Hold the pressure for a long time, and release the pressure when the bonding strength produced by the reaction of the two-component adhesive is high enough to prevent the plate from shifting during handling. If cold pressing is used, it may take 4 to 8 hours , if hot pressing is used, it also takes 7-15 minutes, and the amount of glue required is high, which increases the extra weight of the board. The amount of glue applied on one side needs to be 300-500 grams per square meter

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