There are many types of defoaming agent. The amount of defoaming agent needed to add is different for different types. Here we introduce the amount of six types of defoaming agent:
1, alcohol defoaming agent: alcohol defoaming agent, the dosage is generally within 0.01-0.10%.
2, oil defoaming agent: the amount of oil defoaming agent added is between 0.05-2%, the amount of fatty acid ester defoaming agent added is between 0.002-0.2%.
3, amide defoaming agent: amide defoaming agent effect is better, the amount of addition is generally less than 0.002-0.005%.
4. Phosphoric acid defoaming agent: Phosphoric acid defoaming agent is most commonly used in fiber and lubricating oil, and the amount of addition is between 0.025-0.25%.
5, amine defoaming agent: amine defoaming agent is mainly used in fiber processing, adding amount of 0.02-2%.
6, ether defoaming agent: ether defoaming agent in paper printing and dyeing, washing used more, the amount of addition is generally 0.025-0.25%.