Paint Defoamer - Usage and Precautions

Jun 11, 2024

A paint defoamer is an additive used to prevent bubbles from forming in paint or coatings during stirring, applying or spraying. It works by reducing the surface tension of the liquid, preventing bubbles from forming, and helping the foam to break and release quickly. This can make the paint surface smoother, prevent bubbles and pits in the coating, and improve the painting effect and quality.

The use of paint defoamers mainly follows the following steps:

 

1. Before using the paint defoamer, the paint should be fully stirred to ensure that the defoamer can fully work.

2. According to the type of paint, the degree of foam and the coating requirements, choose the appropriate amount of paint defoamer. Usually, the addition ratio of paint defoamers is between 0.1% and 3% of the total amount of paint, but the specific ratio should be adjusted according to the actual situation.

3. Pour an appropriate amount of paint defoamer into the stirred paint.

4. Use a thin wooden stick or stirrer to mix the paint and defoamer thoroughly to ensure that the defoamer is evenly distributed in the paint.

5. Wait for a while, usually 5 to 10 minutes, so that the defoamer can fully work and eliminate the foam in the paint.

6. Finally, apply the treated paint on the surface carefully, so as not to pile it up too thick. If multiple coats are required, the previous layer should dry thoroughly before the next coat.

There are also some precautions when using paint defoamers:

 

1. Do not use paint defoamers excessively, otherwise it may affect the adhesion and durability of the paint.

 

2. Choose a suitable paint defoamer according to the specific type of paint, because some defoamers may only be suitable for specific types of paint.

 

3. Before using a paint defoamer, it is best to test it on a smaller area to ensure satisfactory results.

 

By following the above steps and precautions, non-silicone defoaming agent defoamers can be used effectively to achieve the purpose of eliminating foam in the paint while ensuring the quality and effect of the coating.

 

 

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