Method and device for improving permeability and homogeneity of resin and reducing pores of prepreg tape

Abstract

The invention relates to a method and a device for improving permeability and homogeneity of resin and reducing pores of a prepreg tape. The method comprises the steps of firstly rolling for attaching resin adhesive films to the prepreg tape integrated by fiber bundles by a hot pressing roller so as to allow resin to permeate into the prepreg tape preliminarily; and then assisting in pressing through supersonic vibration by a supersonic vibration compressing device so as to obtain the prepreg tape with good permeability and homogeneity of resin and few pores. The device comprises a bundle integrating device for integrating fiber bundles into the prepreg tape, resin adhesive film rolls are arranged at two sides of the bundle integrating device, and the hot pressing roller for rolling for attaching the resin adhesive films at the upper side and the lower side of the prepreg tape to the prepreg tape, the supersonic vibration compressing device for assisting in pressing the rolled attached prepreg tape through supersonic vibration, and a winding device for winding the prepreg tape pressed by supersonic vibration are sequentially arranged in the outlet direction of the bundle integrating device. The method can effectively improve the permeability and the distribution homogeneity of resin in the prepreg tape and overcome the defect of pores in the prepreg tape so as to greatly improve the quality of the prepreg tape.

Description

technical field [0001] The invention belongs to the field of prepreg tape manufacturing, and in particular relates to a method and a device for improving the resin penetration and uniformity of the prepreg tape and reducing pores. Background technique [0002] Prepreg tape is a combination of reinforcement and resin matrix, and is one of the raw materials of composite material components. Therefore, the quality of prepreg tape directly affects the performance of composite material components. At present, composite materials have been widely used in aerospace, rail transit, energy and other fields, which is of great significance to the research of prepreg tape. [0003] One of the important indicators to evaluate the quality of prepreg is the permeability of prepreg and the uniformity of resin distribution. At the same time, the increase of pore defects directly leads to the decrease of the mechanical properties of prepreg. The amount of glue impregnated with fibers is small...

AI Technical Summary

Problems solved by technology

[0003] One of the important indicators to evaluate the quality of prepreg is the permeability of prepreg and the uniformity of resin distribution. At the same time, the increase of pore defects directly leads to the reduction of the mechanical properties of prepreg.

The amount of glue impregnated with fibers is small, the impregnation of the prepreg tape is insufficient, and the performance of the prepreg tape is reduced, resulting in the substandard quality of the subsequent composite components, which cannot meet the application requirements

At present, in the existing prepreg tape manufacturing process, it is difficult to ensure the permeability of the prepreg tape, the uniformity of resin distribution, and less pore defects, which will eventually affect the application of composite materials in the industrial field

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