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
CN103072284AActive Publication Date: 2013-05-01725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Publication Date
2013-05-01

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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