defoamer




Foam problems exist in many industrial production processes, leading to inconvenient operation, waste equipment capacity, affect the quality of finished products, etc. Especially under the condition that the scale of industrial production is getting larger and larger and the production efficiency is getting higher and higher. The need to eliminate bubbles quickly and efficiently in the shortest possible time requires new and more effective methods to eliminate bubbles. Silicone defoamer can provide an efficient defoamer solution for foam problems in industrial production due to its excellent performance, economic use, easy processing and diverse functions. It has been widely used in sewage treatment, paper making, printing and dyeing, food and chemical production.










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The advantage of silicone defoamer






Significantly lower dose ratio effective compared to other organic defoamants, resulting in significantly lower cost of use (50 PPM effective)




Durability is often much longer (longer lasting) than other organic defoamer




There is often less reactivity in foaming media, thus reducing compatibility issues




Stable over a wide range of temperatures and PH






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Classification of silicone defoamer




According to the different application environment needs of defoamer, silicone defoamer products mainly have the following types:




Fluid type: Inert, low toxic silicone oil with a wide viscosity range and defoamer in non-aqueous systems




Dispersion: Dispersion of aliphatic solvents, mainly used in oil and gas production processes




Compound: 100% active ingredient - oily, containing hydrophobic silica powder to improve defoaming efficiency, mainly used in non-aqueous systems




Emulsion: A complex of defoamer emulsified in water, suitable for controlling foam in aqueous system applications




Concentrated liquid: highly concentrated polyether modified self-emulsifying product




Powder: A solid powdered compound defoamer that can be added to dry products to prevent foaming when liquid is added, such as in laundry detergent
















Some cognition of the application of silicone defoamer










In the selection process of defoamer, it is first necessary to understand the foaming solution, the detailed cause of foaming, temperature, PH value and other relevant information and the requirements of defoamer, in order to better choose the defoamer to solve the problem. No defoamer is universal, and each defoamer has only a certain range of application. Therefore, choosing a good defoamer is the key to solve the defoamer problem.




The antifoam and antifoam effect of antifoam agent is generally proportional to the amount, but there is also a saturation point, that is, after reaching a certain concentration, adding the amount can not extend the foam suppression time. Therefore, too much use is a waste, the appropriate concentration of use is to ensure that you meet the key to the defoamer requirements, but also the most economical use of the key to the defoamer.




The antifoam and antifoam effect of the antifoam agent is gradually weakened and disappeared with the passage of time. But good defoamer is much longer than poor defoamer, so the evaluation of a defoamer should not only look at the initial defoamer ability, but also look at the length of the defoamer time. Long anti-foam time is the most difficult quality of defoamer, is the determinant of defoamer performance and price ratio, good defoamer is far more than poor defoamer at this point.








There is no relationship between viscosity and concentration of defoamer. A high concentration (solid content) defoamer may have a very low viscosity, while a high viscosity defoamer may have a very low concentration. However, it is precisely the low viscosity and high concentration of defoamer that is a high level in the manufacturing process. Therefore, users can not judge the quality of defoamer simply from the appearance of viscosity, otherwise it is easy to draw wrong conclusions, thus affecting your production.




The comparison between the concentration of different varieties of defoamer from different manufacturers is meaningless. High concentration (solid content) defoamer may have poor anti-foam performance, while low concentration defoamer may have excellent anti-foam performance. The quality of defoamer can only be judged by the comparative test of defoamer performance.