How to use baking varnish defoamer
The method of using baking varnish defoamer mainly follows the following steps and precautions:
1. How to use
Addition amount:
Determine the amount of defoamer added according to the specific formula and construction
requirements of the baking varnish.
Generally speaking, the amount of defoamer added is between 0.1% and 1% of the total amount of baking
varnish, but the specific amount of addition needs to be determined through process tests.
Timing of addition:
The defoamer should be added during the stirring process of the baking varnish to ensure that the defoamer
can be evenly dispersed in the baking varnish.
For paint coatings, the defoamer can be added twice: once at the beginning and the second time during the
grinding period, each time adding half of the total required amount.
Stir evenly:
After adding the defoamer, the baking varnish should be fully stirred to fully mix the defoamer and the baking
varnish to achieve the best defoaming effect.
2. Precautions
Dilution:
According to the actual situation on site, the defoamer can be diluted in advance before use, which helps to
control the amount of defoamer and improve the efficiency of use.
Dilution should use treated tap water or other suitable solvents.
Storage:
Defoamers should be stored in a dry, cool place, away from direct sunlight and high temperatures.
During storage, attention should be paid to their environmental friendliness to avoid pollution to the
environment.
Safety:
When using defoamers, appropriate protective equipment such as gloves, masks, etc. should be worn to avoid
irritation or injury to the skin and respiratory tract.
If accidentally contacted with skin or eyes, rinse immediately with plenty of water and seek medical help.
Compatibility:
Before using the defoamer, ensure that it is compatible with other ingredients in the paint to avoid adverse
reactions or affect the performance of the paint.
Three, Product Features
Defoamers for paints usually have the following characteristics:
It has excellent defoaming and anti-foaming comprehensive performance at medium and low viscosity,
which can prevent paint bubbling for a long time.
It has little effect on gloss and can be used in high PVC systems.
It has good compatibility with the entire system and rarely produces rejection.
It is not affected by temperature and pressure and is long-lasting and effective over a wide range of pH
values and temperatures.
In summary
The use of baking varnish defoamer includes steps such as determining the amount to be added, choosing
the time to add, and fully stirring, and attention should be paid to issues such as dilution, storage, safety, and
compatibility. At the same time, baking varnish defoamer has many advantages and can meet the needs of
different baking varnish processes.
