How to judge the quality of defoamers?

The quality of defoamers can only be judged through comparative testing of their defoaming performance. When choosing a defoamer, the prerequisite is to first judge the quality of the defoamer, so as to choose the one that suits oneself. So next, the editor of Jianyi Chemical will introduce how to judge the quality of defoamers!

Since lotion defoamer is a thermodynamic unstable system, it will be affected by chemicals when added to foaming liquid or other aqueous systems.

1. The defoaming and anti foaming effect of defoamers is generally proportional to the dosage, but there is also a saturation point where adding the dosage after reaching a certain concentration does not prolong the anti foaming time. Excessive use of defoamers is a waste, and the appropriate concentration is the key to meeting your defoaming requirements and the most economical use of defoamers.

2. The defoaming and anti foaming effect of defoamers gradually weakens and disappears over time. But good defoamers have much longer foam suppression than poor defoamers, so evaluating the quality of a defoamer not only depends on its initial foam suppression ability, but also on the length of foam suppression time. Long anti foaming time is the most difficult quality to achieve for defoamers, and it is the determining factor of the price ratio of defoaming performance. Good defoamers far exceed poor defoamers in this regard.

3. There is no relationship between the viscosity and concentration of defoamers. High concentration defoamers may have low viscosity, while high viscosity defoamers may have low concentration. But it is precisely the low viscosity and high concentration defoamers that are at a high level in the manufacturing process. Therefore, users cannot simply judge the quality of defoamers based on their appearance viscosity, otherwise it is easy to draw incorrect conclusions, which will affect your production.

So you can evaluate the quality of a defoamer from the above three aspects. By knowing the quality of the defoamer in this way, one will be able to handle the selection of defoamers with ease.