Preparing method and system for damping layer in embedded type co-curing composite material

Abstract

The invention discloses a preparing method and system for a damping layer in an embedded type co-curing composite material. The method comprises the steps that firstly, strip-shaped composite material prepreg and a strip-shaped spraying template are prepared, a set hollow pattern is arranged on the spraying template, and the size of the spraying template is matched with the size of the composite material prepreg; secondly, under the action of conveying rollers, the composite material prepreg and the spraying template are synchronously fed, the spraying template is pressed above the composite material prepreg, a damping glue material is sprayed in a spraying area, the damping layer is obtained, and the width of the spraying area is larger than or equal to the width of a to-be-sprayed area of the composite material prepreg; thirdly, the composite material prepreg and the spraying template are separated, and after separation, the final shape obtained after a damping material on the composite material prepreg is diffused is the preset shape; and fourthly, the damping layer is dried. The damping layer is prepared through a spraying method, and the preparing efficiency of the damping layer can be greatly improved.

Description

Technical field [0001] The invention belongs to the field of vibration and noise control, in particular to a preparation method and preparation system of a damping layer in an embedded co-cured composite material, and the method is to efficiently and accurately prepare a composite with a complex pattern damping layer embedded through a complex pattern template Material components. Background technique [0002] Because the composite material laminated structure is embedded with the damping film at different positions, it will cause the structure to have different damping effects. Some places are embedded with the damping film, the structure is more sensitive, and some places are embedded with the damping film. The damping film is made into different patterns. Where the structure is more sensitive, the damping film exists, that is, the damping film is embedded; at the insensitive position of the structure, the damping film is hollow, that is, there is no damping film embedded. At...

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Problems solved by technology

Among them, the tableting process first presses the original rubber material into a partially vulcanized viscoelastic damping film, and then makes the damping film into a damping layer with complex patterns by manual cutting, and then combines the damping film with complex patterns and the composite material prepreg according to The layers are laid sequentially, and finally they are co-cured in an autoclave to make a co-cured composite member with a complex pattern embedded in the damping layer. The bonding performance between the damping layer and the prepreg layer in the type co-cured damping composite component becomes worse; the surface molecular activity of the damping layer obtained by the brush coating method is higher than that obtained by the tablet method, and the interlayer bonding is good. However, its production efficiency is low, and it is only suitable for manufacturing damping layers with simple patterns, and it is difficult to manufacture damping layer structures with complex patterns; the printing method can process damping layer structures with complex patterns, but to produce a damping layer with a certain thickness, it needs to go through many times. Roll printing can only be realized, and its production efficiency is relatively low

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