Moulding method of composite material prefabricated component

A molding method and composite material technology are applied in the molding of composite material preforms and the molding field of main bearing hollow special-shaped structure composite material preforms. The problem of stress concentration of composite materials is to achieve the effect of excellent overall performance, convenient processing and low production cost.

Inactive Publication Date: 2012-06-27
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

However, this molding method also has certain problems, such as the irregular shape of the mandrel filler, which causes stress concentration in the composite material, the strength of the material is limited, the inner surface of the workpiece is not smooth, and the dimensional stability is difficult to control, etc.
These improved molding processes have improved the performance of special-shape...

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  • Moulding method of composite material prefabricated component
  • Moulding method of composite material prefabricated component
  • Moulding method of composite material prefabricated component

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Embodiment Construction

[0010] The present invention is further described below in conjunction with the embodiments and accompanying drawings: These specific embodiments are only used to further illustrate the present invention, and do not limit the protection scope of the claims of the present application.

[0011] The molding method (abbreviation molding method of the composite material prefabricated part of the present invention's design, see Figure 1-3 ), the molding method adopts the secondary curing integrated molding process, and the design scheme is: firstly, a composite material core shell 11 with a small thickness (thickness is 0.1-0.4 mm) is prepared by the first curing molding, and the curing molding process parameters mainly include : Curing time, curing temperature, these curing process parameters need to be designed according to the curing characteristics of the prepreg; then the composite material core shell 11 is used as a male mold, and the prepreg pieces (reinforcement body) that h...

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Abstract

The invention discloses a moulding method of a composite material prefabricated component. The moulding method employs a secondary solidification integral moulding technology and comprises the following steps: a. preparing a semi-solid composite material core casing with thickness of 0.1-0.4 mm by a shrinkage tape moulding technology; b. removing a core casing base die body in the composite material core casing by a mechanical method and bonding the broken composite material core casing; c. carrying out coarsening treatment on a surface of the composite material core casing; d. using the bonded composite material core casing as a male mould, paving an enhancement body satisfying design requirement and preparing into a prefabricated component; and e. carrying out a secondary solidification integral moulding on the prefabricated component by an airbag pressurization moulding technology or a compression molding technology. The moulding method suits for preparation of main bearing composite material prefabricated component with hollow abnormal structure.

Description

technical field [0001] The invention relates to composite material preparation technology, in particular to a molding method of composite material prefabricated parts, especially a molding method of some main load-bearing hollow special-shaped structural composite material prefabricated parts. Background technique [0002] With the continuous expansion of the application field of fiber resin matrix composite materials, the current composite material products, especially the equipment and facilities in the fields of sports, leisure and fitness, are developing in the direction of safety and reliability, and the performance requirements of composite material products are also getting higher and higher. come higher. At present, the molding process of composite materials is relatively mature. For general composite material components, ordinary injection molding or molding methods can meet the corresponding technical requirements. However, for some hollow special-shaped or hollow ...

Claims

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Application Information

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IPC IPC(8): B29C70/68
Inventor 张国利陈光伟陈利邸娥梅陈铃飞李嘉禄
Owner TIANJIN POLYTECHNIC UNIV
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