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RTM (resin transfer molding) molding method for carbon-fibre composite complex grid structure

A composite material and grid structure technology, applied in the field of molding, can solve the problems of complex molds, and achieve the effects of simplified metal molds, simple and convenient operation, and small compression ratio.

Inactive Publication Date: 2015-06-17
SHANGHAI COMPOSITES SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an RTM forming method for a composite material grid, which solves the problem of complex molds for grid forming

Method used

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  • RTM (resin transfer molding) molding method for carbon-fibre composite complex grid structure
  • RTM (resin transfer molding) molding method for carbon-fibre composite complex grid structure
  • RTM (resin transfer molding) molding method for carbon-fibre composite complex grid structure

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0026] Such as figure 1 As shown, the grid is composed of 90 grids of different sizes and specifications; because the 90 grids of the grid are of different sizes and sizes, the traditional metal hard mold layering is used for forming, and the hard mold mold is complicated and the molding process is complicated.

[0027] Such as Figure 4 As shown, the embodiment of the present invention provides a RTM forming method of a grid, the method includes the following steps:

[0028] Step 1 Prepare a special metal hard mold:

[0029] According to the grid structure, design a special metal hard mold, figure 2 It is a special metal hard mold used in the forming method of the grid of the present invention, image 3 for figure 2 view, such as figure 2 and ...

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Abstract

The invention discloses an RTM molding method for a carbon-fibre composite complex grid structure. According to the invention, a grid is manufactured by using RTM technology, a dry woven fabric (a five-end satin fabric with designable lateral strength and longitudinal strength) is employed for prefabrication and molding, and RTM glue injection is carried out so as to complete molding of the grid; strength at two directions can be guaranteed at the same time, a laying layer is flat, a compression ratio is small, mould-filling extruding force is small, and the produced grid has small porosity and high linearity at lateral and longitudinal directions; since a hard metal mold and a soft silicone rubber mold are cooperatively used for glue injection of a composite material and an autoclave molding method is adopted, a metal mold used for manufacturing the grid is substantially simplified; the molding method for the grid is simple and easily practicable; the soft silicone rubber mold can be repeatedly used and is applicable to batch production of the grid, so the beneficial effects of low manufacturing cost for the mold, easy and convenient operation, a high product qualification ratio, etc.

Description

technical field [0001] The invention relates to a forming method, in particular to an RTM forming method of a complex grid of carbon fiber composite materials. Background technique [0002] Carbon fiber composite grille is mainly used for directional control of airflow direction in aviation, automobile and other fields. The grid structure is mainly composed of 90 grids of different sizes and specifications, and there are 15 blades of different specifications in the width direction. Because the structure of the grid is complex, the mold for the grid forming is more complicated and the molding is more difficult. At present, the composite material grid (application number: 200910050994.7, forming method of composite material blade grid for aircraft speed control) is manually laid on a silicone rubber soft mold, and the material used for the layup is pre-impregnated non-dimensional cloth. The post-loading mold is solidified in an autoclave, and the above-mentioned process has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/48
CPCB29C70/48B29C70/54
Inventor 郝旭峰诸静王竹刘艳叶周军田杰
Owner SHANGHAI COMPOSITES SCI & TECH CO LTD
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