Tips for using paint defoamer
Precautions for the use of paint defoamer are something that every merchant who purchases and uses paint defoamer must understand. When using paint defoamer without understanding, it will often have counterproductive effects, such as why I added such a large amount of foam but it still cannot be eliminated. Or when I tested the sample, it was clear that the defoaming effect was good, but when faced with a large amount of foam, the defoaming effect was not ideal?
Understand the technical parameters of coating defoaming agents
There are so many paint defoamers on the market, how do you choose one? Then you have to understand its parameters and find the defoaming agent suitable for you based on the parameter indicators and the foam conditions you encounter. This is more targeted.
Paint defoamer has certain requirements on temperature, Ph value and environment.
1. The temperature directly affects the quality of defoaming. Too high or low temperature affects the volatilization of defoaming agent, and demulsification may occur due to too high temperature.
2. PH value, you need to know whether the defoaming agent is acid-resistant or alkali-resistant.
3. The environmental conditions must be good, otherwise the paint defoamer will easily have adverse effects on the surrounding environment.
Before use, do a small trial and then a pilot trial to find the optimal dosage.
The purpose of the small trial is to see the defoaming effect and whether this coating defoaming agent is suitable for its own foam problems. The pilot trial is to check the dosage and addition amount to avoid wasting raw materials.
After the paint defoaming agent is diluted, it should be used as soon as possible and within the effective time. Over time, the defoaming effect will be poor.
