Vacuum rush gum forming method of fiber-reinforced resin matrix compound material

Abstract

The invention relates to a resin flowing compound material forming method which is aided by vacuum. A fiber-reinforced material is tailored and then paved in a mould cavity according to the design of layer quantity and structure of a product. Resin and firming agent are prepared into dipping glue solution which is evenly coated in the mould cavity and ensured to permeate the fiber-reinforced material. A mould is sent into a vacuum bag which is sealed and then vacuumized till a vacuum bag film closely clings to the surface of the reinforced material supported by the mould. A panel with elastic planes is used for expel foams and surplus glue solution in the vacuum bag to the edges outside the mould cavity. Then, in the conditions of normal temperature or heating and vacuum, the product gradually undergoes solidification and demoulding. The method can improve the mechanical properties and the surface quality of the compound material product, reduce the cost on production apparatuses and auxiliary materials and simplify the method operation.

Description

technical field [0001] The invention belongs to the technical field of composite material molding methods, and relates to a vacuum-assisted resin flow molding method technology, which is suitable for the preparation of carbon fiber composite products of various sizes and complex structures, such as carbon fiber motorcycle fenders and other accessories, carbon fiber automobile hood, rear Manufacture of appearance parts such as covers, sand boards, spoilers, propellers of model aircraft, and carbon fiber furniture. Background technique [0002] In recent years, with the rapid development of high-performance fiber (mainly referring to carbon fiber, aramid fiber or their hybrid fibers, etc.) reinforced resin-based composite product molding technology, its application range has also expanded rapidly. In the processing methods of a large number of accessories and structural parts of vehicles, high-end toys, sports equipment, musical instruments, medical equipment and other industr...

AI Technical Summary

Problems solved by technology

[0005] 1. The mold is complex, and it is difficult to make barb-shaped products;

[0006] 2 High cost of raw materials: In order to ensure the smooth injection of glue, only suitable reinforcing materials can be used; the choice of resin is also critical, and the viscosity and pot life should be suitable for the method requirements

[0007] 3 The molding method is complicated: due to the flow and impregnation of the resin in the closed mold, the control of the method is more difficult, and the phenomenon of dry yarn is prone to occur, especially in the case of increasing the fiber content

[0008] 4. For products with carbon fiber pattern on the surface, it is difficult to ensure the regularity of the pattern: because the resin is injected into the mold under a certain pressure, it is easy to wash the fiber and distort the fiber pattern

[0009] 5. The product is prone to local glue accumulation: due to the local unevenness when the fiber is laid, glue accumulation will appear in the gap

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