Preparation method of inner layer of composite material

Abstract

The invention belongs to the technical field of material preparation, relates to a composite material forming technology, and aims at solving the problems such as that common existing composite materials (mainly including composite materials which comprise surface layers that are generally facies and core layers that are generally foam and are positioned in the surface layers) are generally prepared by forming technologies such as manual pasting or die pressing of a prepreg, and the prepared product is low in stability of quality (physical performance of existing products) or the product surfaces are subjected to needle pores and color difference. The composite material forming technology is characterized in that two different methods are carried out to prepare the inner layer and an outerlayer of the composite material. The abovementioned technical problems can be effectively solved by the technical scheme.

Description

technical field [0001] The invention belongs to the technical field of material preparation and relates to a composite material forming process. The composite material includes a surface layer and a core layer inside the surface layer. The core layer is generally foam and the surface layer is fabric. Background technique [0002] For some composite materials, such as thicker composite products, generally more than 10mm, such as slope boards, bed boards, surfboards, wall boards, seats, wind turbine blades, etc., generally adopt a double-layer structure, that is, the surface layer and the surface layer located inside the surface layer. The core layer, its preparation process such as hand lay-up molding and prepreg compression molding process have been widely used, but each has its own shortcomings. [0003] Hand lay-up process, low production efficiency, slow speed, long production cycle, and unstable product quality. Due to the different skill levels of the operators and the...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that some existing composite materials (mainly those composite materials including the surface layer and the core layer located in the surface layer, and the core layer is generally foam, and the surface layer is generally fabric) generally adopt such as hand lay-up or prepreg Molding and other molding processes, the product quality (mainly reflected in the physical properties of the product) is not stable enough or there are pinholes and color differences on the product surface, and a composite material molding process is provided to solve these problems