Metal faced sandwich composite board and manufacturing method thereof

Abstract

The invention relates to a metal faced sandwich composite board and a manufacturing method thereof. The composite board comprises two metal panels and a sandwich layer arranged between the two metal face panels. The main body of the sandwich layer between two interfaces is a preformed core board and the parts of the sandwich layer at the two interfaces are polyurethane cores. The manufacturing method comprises the following steps: The upper and lower metal panels of the core board are compounded to obtain a semi-finished product of a composite board; the semi-finished product of a composite board is reserved with polyurethane foaming space positioned at the interfaces; polyurethane foaming agent is filled inside the polyurethane foaming space of the semi-finished product of a composite board; polyurethane core interfaces are formed after being formed and solidified. The main body of the sandwich layer is made from the core board, which reduces composite cost of the composite board, the joints are cured by the filled PU foaming agent, thus greatly improving strength, cohesive strength and filling saturation of the composite board joint based on a single EPS composite board, the joints are designed to be easily combined with actual engineering, and the composite board has high performance price ratio.

Description

technical field [0001] The invention relates to a metal surface sandwich composite board and a production method thereof. Background technique [0002] The core material of traditional metal sandwich composite panels is mostly a single material, such as polyurethane core material (referred to as PU core material), polystyrene foam board core material (referred to as EPS core material) or rock wool core material, etc., various core materials The sandwich composite panels have their own characteristics in performance, but each has its own shortcomings. For example, the sandwich composite panel with PU core material between the two metal panels has uniform foaming, compactness, and high bonding strength. However, due to the high price of raw materials for the production of PU core materials, the price of sandwich composite panels for this core material is high, which further leads to high costs for building buildings using sandwich composite panels; and the two-layer metal pane...

AI Technical Summary

Problems solved by technology

[0002] The core material of traditional metal sandwich composite panels is mostly a single material, such as polyurethane core material (referred to as PU core material), polystyrene foam board core material (referred to as EPS core material) or rock wool core material, etc., various core materials The sandwich composite panels have their own characteristics in performance, but each has its own shortcomings. For example, the sandwich composite panel with PU core material between the two metal panels has uniform foaming, compactness, and high bonding strength. However, due to the high price of raw materials for the production of PU core materials, the price of sandwich composite panels for this core material is high, which further leads to high costs for building buildings using sandwich composite panels; and the two-layer metal panel Although the price of the sandwich composite board with EPS or rock wool core material is relatively low, because this kind of core material is mostly prefabricated, it is difficult to handle the core material at the special-shaped part of the composite board and at the joint. When the boards are lapped, the effectively large gap between the core materials is likely to produce cold bridges and reduce the service life; in addition, the characteristics of the EPS or rock wool core material itself also determine the strength of the joints of the composite boards. Many ways of changing the lap joint are used to strengthen its strength, but the effect is not very obvious

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