Blushing

2019-11-26 0

Blushing—Phenomena, Causes and Solutions

1、Problem:Blushing

2、Phenomenon:An opaque white film that occurs during the rapid evaporation of the solvent after the paint is applied. This is because the solvent quickly volatilizes and absorbs a lot of heat, causing the moisture adjacent to the drying paint film to condense on the paint film. Sometimes water in the solvent can also cause whitening. Generally speaking, the higher the volatility of the solvent, the greater the tendency of the paint film to turn white.

3、Causes and solutions

Causes

Solutions

During painting, the relative humi-

dity of the air is high.

Control the   temperature and humidity of the painting environment.

The viscosity of paint application is 

low.

Reasonably   adjust the amount of diluent added.

In a high temperature and high   humidity environment, the solvent evaporates too fast.

Control the   temperature and humidity of the painting environment.


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