Co-curing preparation method of composite material/metal laminated-structure composite tube

Abstract

The invention discloses a co-curing preparation method of a composite material/metal laminated-structure composite tube, and belongs to the technical field of composite material moulding. The method comprises the following steps: 1) according to the metal inner wall size and the blank lay-up design, preparing a steel tube as a blank laying mould; 2) according to the lay-up design, laying prepreg on the tool surfaces in turn; 3) demoulding the prepreg blank coated with a coating from the laying tool by using the lubricating effect between two layers of polytetrafluoroethylene cloth; 4) roughening the inner wall of the metal tube to enhance the bonding force between the composite material and the metal; 5) heating the prepreg blank coated with the coating on the outer surface in a heating device below the given safe temperature of resin and the coating. According to the method disclosed by the invention, the tool and the product are encapsulated in an integral mode so as to realize pressure balance inside and outside, and the risk of metal tube deformation caused by pressure difference is effectively avoided while the preparation of the laminated-structure composite tube is finishedin once curing period.

Description

technical field [0001] The invention relates to a composite material / metal laminate structure composite pipe co-curing manufacturing method, which is suitable for the manufacturing process of a laminate structure composite pipe whose inner wall is composite material / outer wall is metal material, and belongs to the technical field of composite material forming. Background technique [0002] Facing the urgent demand for lightweight pipe fittings such as mechanical transmission shafts, pipe fittings made of composite materials or all of them have become the top priority. For special needs, some composite pipe fittings with composite inner walls / metal outer walls should be shipped. And born. The traditional manufacturing method of this kind of parts often adopts the mode of curing composite material pipe fittings, combining composite material pipe fittings and metal pipe fittings by grinding the surface size and combining the adhesive curing mode of the adhesive film. The key t...

AI Technical Summary

Problems solved by technology

At present, at home and abroad, the two-time bonding molding process is usually used to realize the manufacturing process of the composite pipe with the inner wall made of composite material / the outer wall made of metal material laminated structure. There is no guarantee, a large number of machines need to be carried out on the composite pipe to achieve the matching degree with the metal pipe, and the above-mentioned process needs two curing processes to complete the manufacture of the laminated composite pipe, which does not have a co-curing molding process with short cycle time and low cost and other advantages

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