Integrally-forming method of CFRP lenticular collapsible tube

A fiber-reinforced resin and composite material technology, applied in the field of composite material manufacturing, can solve the problems of complex molding process and high cost, and achieve the effect of cost reduction and high molding quality

Inactive Publication Date: 2013-11-27
BEIHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an integral molding method of fiber-reinforced resin-based composite material pod-shaped pipe fi

Method used

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  • Integrally-forming method of CFRP lenticular collapsible tube
  • Integrally-forming method of CFRP lenticular collapsible tube
  • Integrally-forming method of CFRP lenticular collapsible tube

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0028] The flow chart of the present invention is as figure 1 As shown, first, the prepreg is laid on two identical upper female molds 5 and lower female molds 7 according to the designed layup scheme. After the prepreg is laid, the The upper female mold 5 and the lower female mold 7 are mated and locked, and then the impregnation material of the middle arc segment 1 of the fiber reinforced resin matrix composite material pod-shaped pipe fitting close to the mold is pressed by the air bag 4, according to the fiber reinforced resin matrix The curing process of the prepreg used in the composite pod-shaped pipe fittings is to heat up and solidify. After curing, the mold is opened after cooling to room temperature, and finally the fiber-reinforced resin-based composite material pod-shaped pipe fittings are obtained. exist figure 2 Among them,...

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Abstract

The invention discloses an integrally-forming method of a CFRP lenticular collapsible tube. The integrally-forming method comprises five steps as follows: (1), laying a prepreg on an upper female mold and a lower female according to a designed laying scheme, wherein the upper female mold is the same as the lower female; (2), after the prepreg is laid, the upper female mold and the lower female covered with the prepreg are assembled oppositely and locked together; (3), pressurizing the prepreg at the arc-shaped middle section of the CFRP lenticular collapsible tube clung to the mold through an air bag; (4), performing heating and solidifying on the prepreg according to the solidification process of the prepreg for preparing the lenticular collapsible tube; (5), after the solidification completion, cooling the prepreg until the temperature of the prepreg is the room temperature, and then opening the mold. Finally, the CFRP lenticular collapsible tube is obtained. The integrally-forming method has the advantages that the inflatable air bag and the mold are used for pressurizing the prepreg together, no secondary glue joint process is needed, one-step integral forming is achieved, the forming quality is high, the technological process is greatly improved and simplified, and the cost is lowered.

Description

technical field [0001] The invention provides an integral molding method for a pod-shaped pipe fitting of a fiber-reinforced resin-based composite material, which belongs to the technical field of composite material manufacturing. Background technique [0002] Fiber-reinforced resin-based composite material pod-shaped tube (CFRP Lenticular Collapsible Tube) is a structure with shape memory designed and developed by the German Aerospace Center (DLR), which can be folded in a small volume through elastic deformation and relies on The elastic energy stored by itself can be restored to the original pod-shaped tubular structure, which is mainly used in the aerospace field. The German Aerospace Center used the autoclave process to first prepare two identical fiber-reinforced resin-based composite material pod-shaped half-pieces, and then bonded the two half-pieces twice to finally obtain the pod-shaped pipe fittings. At present, the process method of the German Aerospace Center h...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/54
Inventor 白江波熊峻江陈勇
Owner BEIHANG UNIV
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