Repairing method for carbon fiber composite appearance weaving textures

Abstract

The invention relates to a repairing method for carbon fiber composite appearance weaving textures. The method comprises the following steps of dividing a surface to obtain repairing areas according to appearance defects, and preparing resin, carbon fiber prepreg clothes, repairing auxiliary materials and vacuum bags, wherein the resin and original resin are in the same resin system, and the carbon fiber prepreg clothes have a mannerl the same as that of original carbon fiber prepreg clothes; sequentially coating a first layer of resin, laying the carbon fiber prepreg cloth, coating a second layer of resin and laying the demolding auxiliary material on each repairing area, wrapping and sealing the repairing areas by means of the vacuum bags, and performing vacuumizing, heating, pressurizing and curing; and opening the vacuum bags after curing is completed, and removing the demolding auxiliary materials to obtain a repaired product. According to the method, parts of a carbon fiber product do not need to be replaced, and the surface of the carbon fiber product can be directly repaired, such that material waste is avoided; and the problem that the carbon fiber composite textures cannot be repaired is solved, the appearance quality of the carbon fiber product is improved, the production yield is increased, and therefore the manufacturing cost of the carbon fiber product is reduced.

Description

technical field [0001] The invention belongs to the field of carbon fiber composite materials, in particular to a method for repairing the appearance weaving texture of carbon fiber composite materials. Background technique [0002] Due to its excellent high specific modulus, high specific strength and designability and many other advantages, carbon fiber composite materials have become the preferred materials for many industries. More and more manufacturers combine carbon fiber composite materials with products or directly make them into products to achieve the purpose of making products lighter, stronger and more durable. However, due to the material characteristics of carbon fiber composite materials, products made of carbon fiber composite materials lack plasticity and ductility. When cracks appear in carbon fiber composite products due to scratches, collisions, etc., the commonly used maintenance methods include replacing damaged parts. If not repaired, it will greatly...

AI Technical Summary

Problems solved by technology

Carbon fiber prepreg is easily distorted and deformed during the product manufacturing process, resulting in unqualified appearance of the final product

However, carbon fiber has strict texture requirements when used in exterior parts (such as car exteriors, doors, tail fins, hoods, etc.), and texture defects may cause customers to reject returns

At present, for products that require a certain texture of carbon fiber composite materials, especially products with relatively high appearance requirements, the general repair method is to use a repair agent for repair. This repair method can solve general surface defects and ensure certain appearance requirements. However, when the texture distortion and inconsistent yarn width defects occur in the carbon fiber product during the manufacturing process, this method cannot repair the defect

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