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A method for forming a box-shaped reinforced structure of carbon fiber composite materials

A technology of composite materials and molding methods, which is applied in the field of structural molding of carbon fiber-reinforced resin-based composite materials, can solve the problems of difficult control of molding pressure, many internal defects, distortion and deformation of reinforcing ribs, etc., to avoid distortion and deformation, uniform molding pressure in place, The effect of avoiding defects

Active Publication Date: 2015-09-23
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following disadvantages in the preparation of carbon fiber reinforced resin matrix composite box-shaped reinforced structure by thermal expansion molding method: (1) The molding pressure is not easy to control
(2) The wall thickness of the product is thin, and the ribs are twisted and deformed
(3) There are many internal defects in the product

Method used

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  • A method for forming a box-shaped reinforced structure of carbon fiber composite materials
  • A method for forming a box-shaped reinforced structure of carbon fiber composite materials
  • A method for forming a box-shaped reinforced structure of carbon fiber composite materials

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Embodiment

[0033] A method for forming a carbon fiber reinforced resin matrix composite material box-shaped reinforced structure, such as figure 1 As shown, the cross-section of the box-shaped reinforced structure to be formed is a right-angled trapezoid; a rib in the middle divides the inner cavity of the box-shaped reinforced structure into two trapezoidal cavities, namely the left cavity and the right cavity ;The cavity on the left and the cavity on the right are trapezoidal structures that gradually become larger from the mouth to the inside; the wall thickness of the product is 2mm, and the carbon fiber reinforced epoxy resin pre-impregnated non-weft cloth is used to lay symmetrically to form a quasi-isotropy, and the bottom surface of the product For the arc surface.

[0034] The steps of the molding method are:

[0035] 1) Prepare the laminated male mold: the laminated male mold includes male mold A1, male mold B2, male mold C4, male mold D5 and base 3; male mold A1 and male mold...

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Abstract

The invention belongs to the technical field of forming of carbon fiber reinforced resin matrix composite structures, and relates to a forming method for a box-shaped carbon fiber composite reinforced structure. According to the invention, a layering male die is divided into four parts, so that mounting and dismounting in the layering process are convenient; a cavity of a forming female die is divided into four parts, a die separation surface is selectively formed in the transition position of a round corner and a plane of a product, and all parts are connected through positioning pins and bolts; a positioning plate is in sliding fit with the cavity in the periphery of the female die.

Description

technical field [0001] The invention relates to a forming method of a box-shaped reinforced structure of a carbon fiber composite material, and belongs to the technical field of forming a carbon fiber reinforced resin-based composite material structure. Background technique [0002] Resin-based composite molding processes include contact low-pressure molding technology, pultrusion molding technology, compression molding technology, winding molding technology, lay-up molding technology, RTM molding technology, etc. The contact low-pressure molding process is suitable for the molding of high-modulus carbon fiber reinforced resin matrix composite structures; the process of contact low-pressure molding process is to first make the material into the designed shape on the female mold, male mold or counter mold, and then cure it by heating or room temperature , After demoulding, the product is obtained through auxiliary processing. [0003] The key to the composite material proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/54B29C33/38
Inventor 董丰路马立杜巍
Owner BEIJING SATELLITE MFG FACTORY