Preparation method of composite material bearing plate and composite material bearing plate

Abstract

The invention discloses a preparation method of a composite material bearing plate and the composite material bearing plate. The preparation method comprises the following steps: paving a composite material base material of a first skin, and curing and forming the first skin by adopting a vacuum bag pressing process; a plurality of through holes penetrating through a core material are evenly formed in the core material made of a polymer plastic material, the core material is laid on the first skin, PVC foam or PU foam is foamed in each through hole of the core material in situ, and the foam is trimmed to be flush after being hardened; and paving a composite material base material of a second skin on the core material, curing and forming the second skin by adopting a vacuum bag pressing process, and demolding to obtain the bearing plate product. The composite material is applied to the field of composite material forming, high-molecular plastic and a foam material are integrated as core materials, and the high-molecular plastic and the foam material are combined in an in-situ foaming mode, so that the situation that strength and rigidity are reduced due to connection gaps is avoided; the weight of the composite material bearing plate can be controlled, and meanwhile the bearing capacity of the composite material bearing plate is effectively improved.

Description

technical field [0001] The invention relates to the technical field of composite material forming, in particular to a method for preparing a composite material bearing plate and the composite material bearing plate. Background technique [0002] For large-scale components of metal materials, die-casting welding can be directly used for processing, and for components of high-hardness polymer materials, thermoplastic molding can be used, and the process is relatively simple. For large-scale composite components, vacuum infusion or vacuum bagging processes are mostly used. At present, most of the conventional composite material load-bearing boards adopt a sandwich structure in which the skin is covered with a foam core material. Although the direct use of the foam core material as the sandwich layer can effectively reduce the weight of the final product, it also brings strength. Problems with insufficient stiffness. Contents of the invention [0003] In view of the deficien...

AI Technical Summary

Problems solved by technology

At present, most of the conventional composite material load-bearing boards adopt a sandwich structure in which the skin is covered with a foam core material. Although the direct use of the foam core material as the sandwich layer can effectively reduce the weight of the final product, it also brings strength. Problems with insufficient rigidity

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