Fiber-reinforced resin honeycomb sandwich structure composite material and preparation method thereof

Abstract

The invention discloses a fiber-reinforced resin honeycomb sandwich structure composite material and a preparation process thereof. According to the fiber-reinforced resin honeycomb sandwich structurecomposite material and the preparation process thereof, the upper fiber surface and the lower fiber surface are connected together through fiber yarn or fiber bundles by utilizing 3D weaving or sewing, so that the upper fiber surface and the lower fiber surface have the integrity, and therefore the problems that in an existing fiber-reinforced resin honeycomb sandwich structure material, the shearing strength of the fiber-reinforced resin honeycomb sandwich structure is low due to the fact that fiber layers and honeycombs are not bonded firmly, the connection between fibers and the honeycombsis loosen due to aging of a glue layer, and the like can be solved; and the structure is applicable to 3D weaving, and in addition, the fiber yarn or the fiber bundles can penetrate through a laid fiber reinforcement by utilizing modes such as sewing so as to connect the upper fiber surface and the lower fiber surface; and the operability is high, and the requirement for light weight of railway vehicle is met.

Description

technical field [0001] The invention discloses a fiber-reinforced resin honeycomb sandwich structure composite material and a preparation method thereof, relates to the technology for manufacturing fiber-reinforced resin honeycomb sandwich structure composite material parts, and belongs to the field of material processing. Background technique [0002] Fiber-reinforced resin honeycomb sandwich composites have high specific strength, specific stiffness, and good corrosion resistance, fatigue resistance, impact resistance and high temperature performance. As a "lightweight material" in aerospace, track It is widely used in transportation, automobile and other industries. In recent years, fiber-reinforced resin honeycomb sandwich composite materials have attracted more and more attention from the industry, and are widely used in interior decoration materials, subway floors, and high-speed rail pantograph skateboards. However, in the traditional process, the adhesive layer visc...

AI Technical Summary

Problems solved by technology

[0004] In order to solve many problems in fiber-reinforced resin honeycomb sandwich structure composite materials, the bonding between the fiber layer and the honeycomb is not firm due to the aging of the glue layer, and the shear strength of the fiber-reinforced resin honeycomb sandwich structure composite material structure is low, etc., the present invention A fiber-reinforced resin honeycomb sandwich structure composite material structure and a preparation method thereof are disclosed, wherein:

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