A plastic composite bottom plate, its preparation method and its use

Abstract

The invention discloses a plastic composite bottom plate, which comprises a surface layer, a core layer and a bottom layer arranged in sequence from top to bottom, the core layer includes a central core layer and a reinforcement layer, and the upper and lower surfaces of the core layer are respectively bonded by amphoteric adhesive A film is attached to the top layer and the bottom layer. The preparation method is as follows: evenly cover the upper and lower surfaces of the core layer with a layer of amphoteric adhesive film, stick the upper layer and the bottom layer respectively, then heat press and hold the pressure; then depressurize and exhaust in stages or cool to room temperature first and then release the pressure ; Prepared plastic composite bottom plate. The plastic composite bottom plate in the present invention, its density, strength, elastic modulus and surface quality and other performance indicators all reach the composite container bottom plate of the international container industry standard, so it is used as a container bottom plate, which has strong designability and can be used according to actual conditions. The thickness and density of the surface layer and the core layer should be reasonably selected to achieve the best economic effect.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a plastic composite bottom plate, a preparation method and an application thereof. Background technique [0002] The container floor is the main load-bearing structure of the container, and the container floor is required to have high mechanical properties, precise processing dimensions, and good impact resistance. For a long time, the container floor mainly uses 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 floor is increasing day by day. In order to protect the world's ecological environment and reduce the consumption of tropical hardwood resource...

AI Technical Summary

Problems solved by technology

[0003] In the patent CN93115652.0, the bamboo is cut into strips of equal width and thickness, and the strips are arranged in parallel to form sheets, put into a mixture of preservatives and phenolic resin and then laminated and pressed. The resulting bamboo container floor can pass the international standard. Container testing requirements, but the low utilization rate of bamboo, complex manufacturing, and low processing efficiency lead to high cost of bamboo container floor, limited production capacity, and cannot be used for marketization on a large scale

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