Reinforcing ribs contained sandwich structure composite material and its making method

A technology of sandwich structure and composite materials, which is applied in the field of composite materials, can solve problems such as structures and molding methods that have not been reported, and achieve the effect of increasing design space and reducing secondary processing

Active Publication Date: 2013-05-01
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

[0005] However, the above-mentioned 3 patents only discuss one direction of reinforced composite laminates or sandwich structure composite materials, and the structure and

Method used

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  • Reinforcing ribs contained sandwich structure composite material and its making method
  • Reinforcing ribs contained sandwich structure composite material and its making method
  • Reinforcing ribs contained sandwich structure composite material and its making method

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[0047] The patent will be further explained below in conjunction with the drawings. However, the scope of protection of this patent is not limited to specific implementations.

[0048] A sandwich structure composite material flat product with reinforcing ribs, its cross-sectional dimensions are as follows image 3 As shown, the length is 1470mm. The core material of the sandwich structure adopts a density of 200kg / m 3 PVC foam plastic, reinforced rib inner mold adopts 80 kg / m 3 Of PVC foam. Both the sandwich structure panel and the "Π" type reinforcing ribs are made of glass fiber composite materials. The thickness of the sandwich structure panel is 2mm, and the thickness of the composite material of the "Π" type reinforcing ribs is 6mm. Reinforcement material adopts area density 220g / m 2 S glass fiber satin cloth, the base resin is a vinyl ester resin with a viscosity of 240mPa·s at 25℃, and the vacuum assisted molding scheme of this patent is used to implement molding. The pro...

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Abstract

The invention discloses a reinforcing ribs contained sandwich structure composite material and its making method. The composite material is composed of an internal core material, reinforcing ribs, and a one-time-formed fiber fabric reinforced resin composite material layer, wherein the internal core material is a lightweight buoyancy material having a compressive strength of above 0.5MPa; each of the reinforcing ribs is formed by a lightweight material internal model connected with the internal core material through an adhesive, and a fiber fabric layer coated on the external surface of the lightweight material internal model; the fiber fabric is a glass fiber, a carbon fiber, a Kevlar fiber, an ultrahigh molecular weight polyethylene fiber or a basalt fiber; and a resin is a cured substance of a polyester resin, a vinyl resin, an epoxy resin, a phenolic resin and the like. The making method has the advantages of one-time-forming of a product having the reinforcing ribs and the sandwich structure, increase of the rigidity design space of the composite material, reduction of sequent secondary processing, reduction of the defect appearance possibility, scarce generation of the volatilization of harmful gases, and personnel health protection.

Description

technical field [0001] The invention relates to a composite material technology, in particular to a sandwich structure composite material containing reinforcing ribs and a manufacturing method thereof. Background technique [0002] Due to the advantages of light weight, high strength, water resistance, and chemical corrosion resistance, resin-based composite materials are currently widely used in many fields such as aviation, ships, and transportation. However, the elastic modulus of composite materials is lower than that of metal structural materials. For example, the tensile modulus of glass fiber composite materials is only about 1 / 7 of that of alloy steel, which results in less rigidity of composite products. In order to increase the stiffness of composite products, people have adopted two methods to improve the structure of composite materials. One method is to use high-strength stringers to reinforce the composite sheet to improve stability; the other method is to des...

Claims

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Application Information

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IPC IPC(8): B29C70/06B29C70/34B29C70/54
Inventor 张兴刚郭万涛桂林胡万成
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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