Honeycomb composite plate preparation method

Abstract

The invention provides a honeycomb composite plate preparation method, wherein the honeycomb composite plate comprises packaging layers and a honeycomb core material. The preparation method comprises:coating the surface of a packaging layer with chopped fibers or a mesh felt made of chopped fibers; uniformly coating the packaging layer surface coated with the chopped fibers or mesh felt with an adhesive to form a to-be-molded pre-cured fiber adhesive layer; respectively adhering two packaging layers to both contact end portions of a honeycomb core material, wherein at least a packaging layeris adhered to one contact end portion of the honeycomb core material through a pre-cured fiber adhesive layer; and carrying out curing molding to form the honeycomb composite plate. According to the present invention, the surface of the packaging layer is coated with the chopped fibers or mesh felt, and the packaging layer surface coated with the chopped fibers or mesh felt is uniformly coated with the adhesive to obtain the fiber adhesive layer, such that the fiber and adhesive distribution can be reasonably controlled, the use amount of the adhesive is uniform, the reinforcing effects of tensile resistance and compressive resistance of the fiber can be retained, the honeycomb core material can be directly adhered, the molding is convenient, and the method is suitable for automated batchoperation.

Description

technical field [0001] The invention relates to the technical field of kitchen and bathroom decoration materials, in particular to a preparation method of a honeycomb composite board. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Honeycomb composite panels are used in a wide variety of applications requiring high strength and light weight. For greater strength, these panels may include a lightweight honeycomb core due to its high strength-to-weight ratio and resistance to fatigue damage, and fiber layers for reinforcement. One process for applying the fiber layer to the honeycomb involves fiber layer procurement, coating of uncured adhesive steps, because the core material of the honeycomb panel (corrugated board or corrugated board) has less contact area with the adh...

AI Technical Summary

Problems solved by technology

The uncured adhesive has a certain fluidity and viscosity, and uniform coating is an ideal state, which is extremely difficult to control. If some areas are too thin or too thick, it will affect the performance consistency of the later composite sandwich panels, such as less glue The area may be the stress concentration location during use, and these points will first cause the combination of the honeycomb and the glue to fail, so that the strength of the composite board is severely damaged and cannot be used

In the existing technology, in order to ensure the bonding strength, the glue layer will be deep into the honeycomb cells. On the one hand, the amount of glue is increased, the cost is high, and the weight will become larger; on the other hand, the penetration of the glue will affect the performance of the honeycomb layer.

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