The main uses of silicone defoamer
With the development of modern industry, silicone defoamer has become more widely used. Its main function is to eliminate foam formed by materials during the production process, so as to avoid affecting product quality and ensure product quality. Its main applications are as follows:
1. Application of lubricating oil. It has low surface tension and good penetration. When it is adsorbed on the surface of the bubble film, it reduces the local surface tension. It breaks the bubble due to uneven surface tension of the bubble film. It is difficult to dissolve in lubricating oil. It is in a dispersed state, which is conducive to adsorption on the bubble film and breaking the bubble. ; It has an alkyl group similar to mineral oil, which can squeeze into the bubble film, weaken the molecular gravity, and ensure the product quality of lubricating oil.
2. Application in coatings. The requirement for defoaming agents in coating production is to have a certain affinity with the active substances on the foam surface, but it should be insoluble and insoluble in the re-bubble liquid; its surface tension should be lower than that of the bubble liquid; the emulsion (latex) should be ) is stable; after the coating film is formed, it cannot cause the adverse consequences of fish eyes and shrinkage holes; defoamer for water-based coatings: use more substances that are difficult to dissolve in water. The product quality of the coating is guaranteed.
3. Application in food industry. Use its emulsified products, other oil-type products can be used directly, and the dosage should be controlled below 0.05g/Kg. Such defoaming occasions include fermentation and sugar refining. Silicon-ethylene glycol copolymer is suitable for foam suppression and defoaming in the fermentation process. The soaking ability is improved to ensure food quality and avoid affecting the overall use effect.
Therefore, in the actual application process of silicone defoamer, it is necessary to give full play to its incomparable advantages over traditional defoamer, so as to exert stable use effect under standard conditions and provide services for various industries. Make due contributions to development!
