Use water-borne defoamer, pay attention to it!


When emulsion defoamer is used in high temperature environment, there will usually be an unstable phenomenon. If the defoamer is added to the foaming liquid, it will probably not play a defoaming effect or even have a certain effect on the product.


Generally speaking, the defoaming/anti-foaming effect of water-borne defoamer is proportional to its dosage, but it can not be excessive, because water-borne defoamer reaches saturated concentration, the superfluous water-borne defoamer will not produce defoaming effect, but will also cause a certain waste, so the appropriate amount of addition is the key to the use of water-borne defoamer.


Defoamer, also known as defoamer, has the following principles:


1, the local surface tension of foam decreases, resulting in the burst of foam.


2. Breaking the elasticity of membranes leading to bubble bursting


3. Promoting liquid membrane drainage


4. Bubble bursting can be caused by adding hydrophobic solid particles


5. Electrolyte Disintegration Surfactant Double Layer


Any defoamer will weaken with the passage of time, and water-borne defoamer is no exception. But for good water-borne defoamer, the weakening time will be slower, and the weakening time of a little water-borne defoamer will be faster. Therefore, to evaluate whether a water-borne defoamer is good or bad, we should consider its defoaming and anti-foaming properties comprehensively.


Many people in the purchase of water-borne defoamers, will think before and after, compare the price and performance of a number of water-borne defoamers, here to remind you, in fact, different manufacturers produce water-borne defoamers have their own data indicators, each type of defoamer is also various, can not be used as a criterion to judge the quality of water-borne defoamers.


First of all, it is necessary to determine the system that needs to use defoamer, which is water-based system or oil-based system. For example, in the fermentation industry, oily defoamers, such as polyether modified silicon or polyether, should be used. Water-borne coatings industry needs water-borne defoamer, organosilicon defoamer. The most suitable and economical defoamer can be obtained by choosing defoamer and comparing the amount of defoamer and the reference price.


On the dosage of water defoamer, we should remind you that the more the dosage, the better. Excessive dosage will lead to shrinkage, paint and other diseases. If it is a water defoamer containing silicon, the use of more will affect the re-coatability.


Although the dosage of water-borne defoamer is the key to defoaming, the correct use of it can not be ignored.


Service is the key to business orders. No matter new customers or old customers, only good service attitude can make customers feel at ease to buy.