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Method and apparatus for manufacturing composite parts capable of venting gases out of the composite part

A technology for gas discharge and parts, applied in the field of manufacturing composite parts, can solve the problems of reducing the risk of mechanical properties of composite parts, not being able to ensure the discharge of air bubbles, and not being able to fully and effectively discharge air bubbles, etc.

Active Publication Date: 2020-11-03
RATIER FIGEAC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the known methods are not sufficiently effective to vent air bubbles that may be present in the prepared composite part
In particular, the use of vacuum bags and / or vent holes arranged in different regions of the composite part does not ensure the venting of any air bubbles present in the material, which have the tendency to generate inhomogeneous areas and significantly reduce the thus produced Risks to the Mechanical Properties of Composite Parts

Method used

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  • Method and apparatus for manufacturing composite parts capable of venting gases out of the composite part
  • Method and apparatus for manufacturing composite parts capable of venting gases out of the composite part
  • Method and apparatus for manufacturing composite parts capable of venting gases out of the composite part

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Experimental program
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Embodiment Construction

[0072] Figure 1 to Figure 4 The different steps of shaping and curing the polymer resin forming the matrix impregnated with the reinforcing structure of the composite blank piece 1 are shown.

[0073] Figures 1 to 4 A composite blank piece 1 is shown comprising multiple layers superimposed on each other, each layer of the composite blank piece 1 being made of a reinforcing structure impregnated with a matrix comprising at least one polymeric resin. The composite blank piece 1 has the shape of a parallelepiped and comprises two main free faces, one called upper face 2 and one called lower face 3 , said lower face opposite said upper face. The composite blank part 1 also has a gas discharge region 4 which includes at least one side face of the composite blank part 1 . The composite blank part 1 is made, for example, of epoxy resin and carbon fiber mats which are superimposed on one another parallel to the pressure surface. Pressure is applied to the composite blank piece in...

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Abstract

The invention relates to a method for the manufacture of parts called composite parts made of at least one composite material comprising at least one layer of reinforcing structure impregnated with a polymer matrix, Said reinforcement structure extends inside said polymer matrix, in said method: - preparing a composite blank piece (1) of said composite part, - carrying out a curing step of said polymer matrix of said composite blank piece, Simultaneously apply pressure on at least one pressure-receiving surface (2) of the composite blank, characterized in that the pressure is applied in the form of a pressure gradient, and the pressure is applied on the pressed surface of the composite blank face, so that the gas present in said composite blank piece flows from the area of ​​maximum pressurization towards the area of ​​gas discharge (4). The invention also relates to a device for manufacturing such parts.

Description

technical field [0001] The invention relates to a method of manufacturing composite parts and to a device for manufacturing such parts. Background technique [0002] Composite materials with a polymer matrix are increasingly being used in a large number of technical and industrial fields, especially in the aerospace field, because composite materials have excellent mechanical properties for limited masses. Composite materials can be used to implement tools such as those used to implement structural parts. [0003] Several methods exist for preparing, molding, and polymerizing composite parts in both low-volume and high-volume quantities. These methods generally require the use of pressures greater than atmospheric pressure. Most composite part preparation methods in which steps are carried out in an autoclave also require the use of vacuum bags arranged around the part being prepared and placed with the part in the autoclave in order to obtain the intended Fiber rate, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/44B29C33/40
CPCB29C33/405B29C70/44B29C70/544B29C70/549B29C33/40B29C37/0064B29C43/3642B29C2043/3649
Inventor P·布里翁
Owner RATIER FIGEAC