Find the reason for yellowing first:

1. After spraying 1K white, without waiting for complete drying, immediately spray the topcoat to cover the light, making it very simple to turn yellow.

2. After spraying, the paint layer digested and absorbed water, which immediately covered the surface and easily turned yellow, especially during rainy days and temperatures.

3. The relative humidity of the air during construction is too high, and it can easily turn yellow. In short, the gas contains water vapor that is added to the paint layer.

4. Last night when the painting was done, the machinery and equipment were not cleaned and formed.

5. The topcoat is moldy and expires, and the epoxy curing agent is poor and not resistant to yellowing.

Due to the elimination of the problem, last night's 1K white paint was completely dried and then polished, and many years of painting work experience has been done in that way. The well-known brand of car paint has been applied for a considerable amount of time, and such a thing has not happened before.

And after checking, the production date is near production, and the pottery jar is also very new, so the probability is not high. Cleaning spray equipment is a habit for me, and it is not.

The only thing that would come as a surprise was the presence of water vapor. It has been raining for the past two days, and the humidity in the spray room is too high, causing water vapor to enter the paint layer.

There was no way to just polish and start over again. Suddenly, I thought of Liu Huan's song "Start Again", which looked at the heroic life of success and failure, but started over again.

After going through this, I have become successful again in the future. Do not spray on rainy days anymore, as the environmental humidity is high and the paint layer is very simple, which may cause problems.

Special attention: If it is sprayed with 2K pure white, even if the topcoat is polished, it will also cause yellowing. 2K pure white itself has a reddish phase, and if the topcoat is polished, a light yellow mother will flash through the topcoat layer.

Article source: Qingyuan Automotive Repair Paint http://www.jinliangxincai.com/