During production or use, foam is often a “stumbling block” that affects product quality and efficiency. Currently, all industrial products and the food industry encounter the problem of foam. However, there is no need to worry too much, as defoamers are designed to eliminate foam. Today, we will share four commonly used types of water-based […]
Defoamers eliminate foam and are the most widely used additives across various industries. Despite their common use, some customers still encounter misconceptions during the addition process. Today, we will discuss when to add silicone defoamers and what precautions to take before addition! 1. Two conventional methods for adding silicone defoamers 1. Add before foaming This […]
The worldwide defoamer market has actually witnessed an amazing surge in demand, driven by progressing commercial requirements and governing shifts. As manufacturers in various fields gradually overcome foam control barriers, from food processing to medicine, all industries gradually rely on anti-foaming agents to maintain operational efficiency. The recent report emphasizes that sales of defoamers can […]
Comprehensive Analysis of Defoamers for Oil-Based Coatings: Characteristics, Selection, and Application 1. Definition and Core Advantages of Defoamers for Oil-Based Coatings Oil-based coatings (also known as oil-based paints) primarily use drying oils as their film-forming agents and include categories such as clear oils, thick paints, and oil-based mixed paints. During production, the addition of chemical […]
During the mixing of special mortar with water, the air introduced is wrapped in the wet mortar to form bubbles. At the same time, admixtures such as water-reducing agents, dispersible polymer powders and cellulose ethers have hydrophilic groups, which can reduce the surface tension of the liquid, cause bubbles to aggregate and increase the stability […]
As the understanding of foam stability factors continues to grow, so does the understanding of the defoaming mechanism. Foam stability factors are diverse, and so are the defoaming mechanisms. Reducing local surface tensionSome people have studied the defoaming process of polysiloxane in oily systems: the silicone oil defoamer droplets reach the bubble film, causing the […]
Chemical stability is a necessary condition for defoamers, so defoamers in foaming systems generally do not fail due to chemical reactions. Most of the reasons for their failure are caused by changes in the dispersion state. Only by eliminating this cause can the effectiveness of the defoamer be fully exerted. 1. The defoamer particles have […]
Durability 1. Defoamers are compatible with surfactants. For example, defoamers are more effective at the beginning, but their effectiveness will be greatly reduced after a period of time. 2. The main agent of the defoamer can be absorbed by the resin particles. The applicable pH range of defoamers: the use of defoamers in an environment […]
Causes of foam formation Water-based paints are not pure liquids; they are colloidal dispersions of particles (pigments, resins) in a carrier (water). One of the key factors in the stability of air bubbles in paints is surfactants, as it is they that hold all the different ingredients together and prevent them from separating or settling. […]
In the production process of paints, materials such as emulsions, dispersants, thickeners, leveling agents, wetting agents, emulsifiers, etc. are actively used, causing the paint to be prone to foaming. Moreover, these bubbles have a stable and long-lasting effect. In particular, emulsifiers are added to water-based latex paints, and the use of these emulsifiers can greatly […]
