A kind of composite plate, preparation method and application thereof

Abstract

The invention discloses a composite board. The composite board comprises a first surface layer, a first sandwich layer, a middle sandwich layer, a second sandwich layer and a second surface layer which are sequentially arranged from top to bottom, wherein upper and lower surfaces of the middle sandwich layer are respectively connected with one surface of the first sandwich layer and one surface of the second sandwich layer; the other surface of the first sandwich layer is connected with one surface of the first surface layer through an amphoteric glue film, and the other surface of the second sandwich layer is connected with one surface of the second surface layer through the amphoteric glue film. A method for preparing the composite board comprises the following steps: paving one layer of amphoteric glue films on the second surface layer, paving one layer of second sandwich layers on the amphoteric glue film, paving one layer of middle sandwich layers on the second sandwich layer, paving one layer of first sandwich layers on the upper surface of the middle sandwich layer, paving one layer of amphoteric glue films on the upper surface of the first sandwich layer, paving one layer of first surface layers on the upper surface of the amphoteric glue film, and finally performing hot pressing and pressure maintaining; depressurizing and exhausting or firstly cooling to ambient temperature and releasing pressure in a segmentation manner to prepare the composite board. The composite board has the advantages of abrasion performance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of container floor manufacturing, in particular to a composite plate, a preparation method and an application thereof. Background technique [0002] The container floor is the main load-bearing structure of the container. The container floor manufacturing industry requires the floor to have high mechanical properties, precise processing dimensions, and good impact resistance. For a long time, the container floor has mainly used high-density hard broad-leaved wood grown in tropical rain forests as the main raw material. After being cut into veneers by large-diameter logs, multi-layer veneers are formed into embryos and hot-pressed into plywood. Since the growth cycle of high-density broad-leaved tree species is very long, it generally takes 50 years or even longer, and the demand for container flooring is increasing day by day. In order to protect the world's ecological environment and reduce the consumption...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN93115652.0 discloses a production method of bamboo container flooring. In this method, the bamboo is cut into strips of equal width and thickness, and the strips are arranged in parallel to form sheets, which are dipped in a mixed solution of preservative and phenolic resin and stacked. The bamboo container floor produced can pass the test requirements of international containers, but the utilization rate of bamboo is low, the manufacturing is complicated, and the processing efficiency is low, which leads to the high cost of bamboo container floor, limited production capacity, and cannot be used on a large scale. marketization

The whole bamboo structure container bottom plate is adopted, and the material layer design is not designed, resulting in more bamboo materials and thicker board surface

[0006] Although bamboo is used as the main raw material in the prior art to prepare the technical scheme of the bottom plate, the cost of the prepared product is high, and the mechanical properties need to be further improved.

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