Integrally-forming method of CFRP lenticular collapsible tube

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...

AI Technical Summary

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 fittings to solve the technical problems of complex molding process and high cost of fiber-reinforced resin-based composite material pod-shaped pipe fittings

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