A method of repairing resin products

Abstract

The invention discloses a method for repairing a resin product, which includes the following steps: step a, smoothing the defect of the resin product to facilitate bonding, placing the defective plane upwards and horizontally, using the same formula as that used for the production of the resin product The repair material fills the defect; the defect is in a planar structure or planar shape; step b, take a piece of polyurethane film with an electric heating film on the surface, and coat or print electrodes on the electric heating film; step c, then the polyurethane film The smooth surface of the film is attached to the defect of the resin product filled with the repair material, and the electrode of the electric heating film is heated to keep the repair material at a temperature range of 80-100°C for 2-4 hours, so that the repair material is cured and formed ; Step d, disconnect the power supply of the electric heating film, and tear the polyurethane film from the resin product. Through the above method, the repairing method of the present invention can well repair the defect of the resin product, and the repaired part has good gloss and consistent color.

Description

technical field [0001] The invention relates to the field of repairing resin products, in particular to a method for repairing resin products. Background technique [0002] The epoxy resin products of medium and high voltage grades in the prior art are cured and molded by epoxy resin composite materials cured at medium and high temperatures by using acid anhydride curing agents. The advantage of this repair method is that it is easy to operate, and it is not limited by external conditions such as time, weather, temperature and location. It can repair various defects simply and easily, but this method also has Disadvantages and deficiencies of inconsistent color, rough surface, and lack of luster; and room temperature curing epoxy resin mixtures are usually adjusted to paste when mixing the mixture for ease of operation to avoid hanging flow, and the repair material cannot self-flow in non-planar parts flat, so the effect of repairing the shape of non-planar parts is not goo...

AI Technical Summary

Problems solved by technology

[0002] The epoxy resin products of medium and high voltage grades in the prior art are cured and formed by epoxy resin composite materials cured at medium and high temperatures with acid anhydride curing agents. The advantage of this repair method is that it is easy to operate and is not limited by external conditions such as time, weather, temperature, and location. It can repair various defects simply and easily, but this method also has problems after repair. Disadvantages and deficiencies of inconsistent color, rough surface, and lack of luster; and room temperature curing epoxy resin mixtures are usually adjusted to paste when mixing the mixture for ease of operation to avoid hanging flow, and the repair material cannot self-flow in non-planar parts flat, so the effect of repairing the shape of non-planar parts is not good; in addition, amines are often used as curing agents for room temperature curing epoxy resins, and the weather resistance of cured composite materials is generally better than that cured with acid anhydride curing agents. The epoxy resin composite materials cured at medium and high temperature are poor; due to the high viscosity of the room temperature cured material, it is usually used to adjust the viscosity by adding a large amount of fillers, so that the adhesion after repair is less due to the less content of the matrix resin that acts as a bond. Insufficient, so that the repaired position is easy to fall off after a long time