As we all know, the types of defoamers and the industries involved are very extensive, and different defoamers have different properties and functions. But from a relatively large direction, defoamers are mainly divided into water-based and oil-based. In contrast, the use of
water-based defoamers will be wider. So how does the water-based defoamer achieve effective defoaming?
The water-based defoamer is compounded by special modified polyether and fluorine-containing raw materials through a special process. It can be used to eliminate foam in water-containing systems, and can effectively exert the effect of defoaming and foam suppression in water systems. Water-based defoamer has good chemical stability, high solid content, less dosage, easy to disperse in water, can be well compatible with liquid products, and will not produce adverse chemical reactions with the foaming system to cause precipitation, breakage Milk, oil floating and other phenomena will not affect the discharge quality of the water-based system. It has good high temperature resistance, acid and alkali resistance, and can be used in a wide range of industrial production processes without demulsification failure and poor foam suppression.
When the water-based defoamer is added into the water-based system, the molecules will quickly dissolve in the liquid and spread out evenly, attaching to the surface of the bubbles to reduce their surface tension, causing the tension of the bubbles to be unbalanced and ruptured; in addition, water-based defoamers After the foaming agent molecules are added to the foaming system, they will disperse in it, making the surface active substances in the system lose the effect of stabilizing the bubbles, destroying the elasticity of the bubble film, making it difficult to form it again, and then achieving the effect of defoaming and foam suppression.
Under what circumstances should water-based defoamers be selected?
Compared with oil-based defoamers, the price of water-based defoamers will be slightly lower, and they are often used in a wide range of industries such as water treatment, metalworking fluids, and paper pulping. So under what circumstances should we choose a water-based defoamer? Before choosing a defoamer, you must first understand the nature of the foaming system, and then choose a suitable water-based or oil-based defoamer. Water-based defoamers are divided into three categories: silicones, which are often used to eliminate mud defoaming in water treatment, coatings, textile printing and dyeing, metal processing fluids, and oil extraction; polyethers, so some are harmful to the process. Those with higher requirements and no silicon will be used now; mineral oils are often used to solve foam problems in industries such as water-based paint, paint wastewater, and water-based adhesives.
The water-based defoamer can target the foaming in the production process of the general tax-containing system, and the effect is good. When in use, it needs to be fully mixed with the solution to achieve the desired effect. Of course, seeing is believing, whether the effect is good or not depends on you using it. If you want to know the real effect, please contact us now!