Correct use guide for plastic paint defoamer: make every drop count
Plastic paint defoamer is good, but only by mastering the correct use method can it be fully utilized.
Otherwise, it may not only fail to achieve the defoaming effect, but also affect the performance of plastic paint.
The following is a detailed introduction to the key points of using plastic paint defoamer.
Timing of additionThe addition of plastic paint defoamer is not the earlier the better, nor the later the better, but the appropriate time
should be selected according to the specific situation. In the production stage of plastic paint, when the paint is stirred and mixed,
the defoamer can be added in an appropriate amount, so that the bubbles can be suppressed at the early stage of generation and
the subsequent bubble problems can be reduced. In the construction stage, such as before spraying, brushing and other operations,
a small amount of defoamer can also be added to deal with new bubbles that may be generated during the construction process.
Control of the amount of addition
The more plastic paint defoamer is added, the better the effect. Excessive addition may cause new problems such as shrinkage and
loss of gloss in the paint film. Generally speaking, the amount of defoamer added is 0.1%-1% of the total amount of plastic paint.
The specific amount needs to be determined according to the type, formula, and actual production and construction conditions of
the plastic paint. Before use, it is best to conduct a small test to find the best addition ratio through the test to achieve the best
defoaming effect.
How to use
When adding the defoamer, it needs to be added slowly to the plastic paint and stirred at the same time so that the defoamer can
be evenly dispersed in the paint. The stirring speed and time should be moderate to avoid the air from being drawn in again due to
stirring too fast or too long to produce bubbles. If the defoamer is added during the construction process, it is also necessary to pay
attention to stirring evenly to ensure that the defoamer can work quickly.
In addition, there are some precautions to keep in mind. Different types of plastic paints may require different types of defoamers.
For example, the defoamers suitable for acrylic plastic paint and polyurethane plastic paint may be different. When choosing, match
them according to the type of plastic paint. At the same time, the defoamer needs to be sealed and stored in a cool and dry place,
avoiding direct sunlight and high temperature environment to prevent its performance from being affected. Before use, check
whether the defoamer is within the shelf life. Expired defoamers may lose their defoaming effect and even have adverse effects on
plastic paint.
In short
The correct use of plastic paint defoamers is the key to ensuring their best effect. Only by mastering the timing of addition, controlling
the amount of addition, using the correct method of use and paying attention to relevant matters can the defoamer truly become a
powerful assistant in the plastic paint finishing process and escort the quality of plastic products.
