Defoamer is a chemical additive used to eliminate or inhibit the generation of foam in liquids.
The following is an introduction to the characteristics, composition and application of defoamers.
Part One. Main features
• Fast defoaming speed
Can quickly break the foam and effectively control the generation and spread of foam.
• Long anti-foaming time
Continuously inhibit the re-formation of foam for a certain period of time.
• Good chemical stability
It is not easy to react chemically with the defoamed system and does not affect the performance and quality of the system.
• Good dispersibility
Can be evenly dispersed in the liquid and give full play to the defoaming effect.
Part Two. Main ingredients
• Silicones: such as polydimethylsiloxane and its derivatives, which have excellent defoaming properties, low surface tension and good chemical stability.
• Polyethers: Made from the polymerization of ethylene oxide, propylene oxide, etc., they have good water solubility and defoaming properties and can function under different temperatures and pH conditions.
• Fatty acids and their esters: such as stearic acid, oleic acid and their esters, have certain defoaming ability and are often used in some fields with high environmental protection requirements.
• Mineral oil: Based on mineral oil, with appropriate amount of surfactant added, it has good defoaming and anti-foaming properties.
Part Three. Application Areas
Industrial production
In the papermaking, coating, ink, printing and dyeing, rubber, plastic and other industries, it is used to eliminate the foam generated in the production process and improve product quality and production efficiency.
Food processing
In the production of beverages, beer, dairy products, soy products and other foods, it prevents excessive foam from affecting production operations and product quality, while ensuring the taste and appearance of the food.
Water treatment
In the process of sewage treatment, drinking water treatment, etc., it eliminates the foam generated by aeration, stirring and other operations to improve the water treatment effect.
