Method and device for rolling and molding fiber reinforced composite board

Abstract

The invention discloses a method and a device for rolling and molding a fiber reinforced composite board. The molding method can obtain the composite board which has the advantages of uniform mechanical properties in all directions on the board plane, high strength, high surface quality and high precision by using fiber cloth with different texture directions as a reinforcing material. The method makes resin on both sides of each layer of fiber cloth uniformly distributed in a form of two-time resin impregnation and rolling so as to obviously reduce the phenomenon of bubbles inside the molded composite board and ensure good properties of the composite board. In addition, the fiber cloth moves along the vertical direction in the process of resin impregnation to make the resin uniformly distributed on both sides of the fiber cloth. The molded fiber reinforced composite board is continuously rolled through multi-rolling, and has compact material texture and low board porosity. The device is easy to control the thickness and the size of the fiber reinforced composite board and only needs to increase and decrease the number of fiber cloth racks, resin impregnation tanks and rollers, and the gap between two rollers.

Description

technical field [0001] The invention belongs to the technical field of composite material plate forming, and in particular relates to a method and device for roll forming a fiber reinforced composite material plate. The composite material plate produced by the method is especially suitable for the non-isothermal hot stamping of the fiber reinforced composite material plate and the fiber reinforced composite material flat piece under complex stress state. Background technique [0002] Fiber-reinforced composite materials are fiber-reinforced materials with different properties added to different matrix materials, the purpose of which is to obtain composite materials with more excellent properties. Fiber reinforced material is the main load-bearing component of the composite material, which can greatly increase the strength and elastic modulus of the matrix resin, and can reduce the shrinkage during the molding process of the composite material and increase the thermal deforma...

AI Technical Summary

Problems solved by technology

However, the traditional composite material plate preparation method has low efficiency and high cost, and is only suitable for the production of small batch parts, which seriously restricts the application of carbon fiber composite materials in traditional industrial fields.

The only pultrusion molding process suitable for mass production is also limited to the production of profiles, which is difficult to meet the needs of modern industry, especially the automobile manufacturing industry

[0003] Moreover, the fiber-reinforced composite boards currently manufactured are mostly used in the reinforcement of load-bearing structures. The fiber filaments of this composite board are arranged along the length direction of the board, so it has high strength in the length direction of the board. However, the strength in the width direction of the plate is low, that is, the anisotropy in the plate plane of the composite plate is obvious

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