Structure using glass fiber reinforced resin foam and manufacturing method thereof

Abstract

The invention relates to a carrier sandwich structure and a manufacturing method thereof. The carrier sandwich structure of the present invention is characterized as follows: it is composed of a sheet-like foamed resin body forming a core and a fiber-reinforced composite material layer forming a surface material on one or both sides in the thickness direction of the foamed resin body ; between the foamed resin body and the fiber-reinforced composite layer to form a bond layer of core material and surface material; a large number of glass fibers are inserted into the foamed resin body; more than 70% of all glass fibers are in the longitudinal direction of each glass fiber The glass fibers forming an angle with the foamed resin body satisfy an angle of 45° to 90°; more than 70% of all glass fibers are glass fibers satisfying a degree less than or equal to 90°; the exposed glass fibers are impregnated and bonded to An adhesive layer and a fiber-reinforced composite material layer, wherein one or both ends of the glass fibers are exposed throughout the foamed resin body. In addition, it is characterized in that the height of the glass fibers exposed on the foamed resin body is 0.5 mm to 10 mm.

Description

technical field [0001] The present invention relates to a carrier structure using a foamed resin body containing glass-reinforced fibers and a manufacturing method thereof, and more particularly to a carrier structure having excellent fatigue resistance and a manufacturing method thereof: Physical and chemical surface treatment is carried out in the foamed resin body of the part, so that the glass fibers arranged in the thickness direction in the foamed resin body are exposed at a fixed height on the foamed resin body, thus the foamed resin body and the glass fiber exposed In the integral molding process of the fiber-reinforced composite material, the bond between the foamed resin body with exposed glass fibers and the fiber-reinforced composite material is improved. Background technique [0002] Generally, polyurethane foam is a porous material on which the sponge is made from polyols and diisocyanates, and it exists in two types, flexible and rigid. Flexible types of poly...

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Problems solved by technology

[0010] However, the above-mentioned published patents focus on the technology of enabling polyurethane foam to have excellent thermal insulation properties even at a small thickness, and therefore do not disclose solutions to the problems of delamination between the surface and the core material and reduction in toughness. specific technology

[0011] In addition, conventionally there is no disclosed technique on the bending fatigue resistance of the carrier structure

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