Automobile paint bottom filling agent and automobile paint surface repairing method

Abstract

The invention relates to the technical field of maintenance and repair of vehicles, and specifically discloses an automotive paint primer poor repair agent, which includes a prepolymer, a photoinitiator, a reactive diluent and a solvent, and the prepolymer includes urethane acrylate, epoxy acrylate and Acrylate prepolymer, the photoinitiator is mainly 1-hydroxycyclohexyl phenyl ketone, the reactive diluent includes bifunctional reactive diluent, pentaerythritol triacrylate and trimethylolpropane triacrylate, and the solvent contains a variety of organic Solvent has the advantages of fast curing time, moderate leveling performance and good adhesion. The invention also discloses a method for repairing scratches on the car paint surface. The scratches and undercutting of the car paint surface are quickly repaired by using the car paint bottom repairing agent, the process is simple and the repairing efficiency is high.

Description

technical field [0001] The invention relates to the technical field of vehicle maintenance and repair. Background technique [0002] With the rapid increase of the car ownership rate in my country year by year, the incidence of car accidents is also on the rise, mainly due to scratches and scratches that damage the paint layer on the car surface. The paint layer on the surface of the car is mainly composed of primer, topcoat (color paint) and varnish from bottom to top. At present, the maintenance of the car paint surface is carried out by professional maintenance personnel in the repair shop. For example, the car components below the primer are not damaged but the car surface paint layer is damaged. The main methods are as follows: [0003] 1. After determining the damaged part of scratches or scratches, use low-number coarse sandpaper to polish the damaged part; [0004] 2. Use putty to repair, after drying, use high-grade fine sandpaper to polish and repair the shape, r...

AI Technical Summary

Problems solved by technology

[0008] The leveling performance of traditional putty is not high, the surface roughness is high after spraying and drying of putty, and the flow performance on primer or metal is poor, resulting in uneven and irregular shape of putty coating; the outer layer of automobile metal is often not flat , is irregular and streamlined, so the leveling performance is too high and the putty will easily accumulate in the lower place, making the thickness of the putty coating uneven

Therefore, the atomic ash must be sprayed and polished by experienced workers many times during the construction, so that the atomic ash coating is consistent with the metal outer layer of the car. The polishing is completely manual, and the process takes a long time. The dust generated by the grinding is in contact with the human body. Long, harmful to the health of workers, long time manual grinding, labor-intensive, low maintenance efficiency

In addition, the traditional putty spraying must be completely dry before grinding, which requires a long drying time, which prolongs the maintenance time and affects the maintenance efficiency

[0009] The entire repair process takes 6-8 hours. Due to the huge amount of car repairs and the lack of qualified repair personnel, car owners often need to queue up for repairs, which affects the normal use of the car.

[0010] In the process of paint spraying during maintenance, it is prone to local "biting" phenomenon, which affects the adhesion between coatings, causes the paint film to shift, the thickness is uneven, and even dents appear on the surface of the paint decoration. Because the paint film formed in the previous process cannot withstand the erosion of the solvent used in the paint in the subsequent process

There are many methods to deal with "biting the bottom" in the prior art, but all of them need to use the above-mentioned paint layer repair method to polish and repair. The construction procedure is cumbersome, the working time is prolonged, the work efficiency is reduced, the cost is increased, and the overall work progress is affected.