Judging the quality of defoamer can mainly be carried out from the following aspects:
Defoamer. 1.Defoaming efficiency:
To test the ability of a defoamer to eliminate foam per unit of time, the speed and extent of foam disappearance can be determined by laboratory simulations or field tests when a defoamer is added under specific conditions.
2.Persistence Foam inhibition:
Observe whether the defoamer can inhibit the formation of new foam for a long time after eliminating the initial foam, that is, test the length of its foam inhibition time. High-quality defoamers can not only defoam quickly in a short time, but also have good long-lasting foam inhibition.
3.Compatibility:
The defoamer is added to the target system and checked to see if it disperses quickly and uniformly and does not cause turbidity, precipitation, or other adverse effects in the system. Poor compatibility can lead to weakened or even ineffective defoaming, which can also negatively affect the quality of the final product and the process.
4.Does not affect the quality of the product:
After adding the defoamer, evaluate whether it will adversely affect the performance, color, transparency, stability, etc. of the final product. For example, in some chemical, food, pharmaceutical and other industries, defoamers need to meet certain purity and safety requirements.
5.Dosage:
On the premise of ensuring a good defoaming effect, the smaller the amount of defoamer, the better. Defoamers that can be added in small quantities are better from an economic point of view.
6.Physicochemical Properties:
The surface tension of the defoamer should be lower than that of the foaming medium, making it easy to spread and penetrate at the bubble interface;At the same time, the affinity between the defoamer and the foaming solution should be moderate, neither too strong to be dissolved or too weak to disperse effectively.
Based on the performance of the above aspects, we can comprehensively evaluate the quality of a defoamer, which is suitable for the needs of specific application scenarios. In addition, you can also refer to the technical parameters, third-party test reports and practical application feedback in the industry to assist decision-making.
Defoamer.