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A defoamer manufacturer explains the possible causes of oil floating on the surface of a defoamer.
Release Date:
2021-12-22
Antifoaming agents are chemical formulations that exert defoaming effects through both chemical and interfacial mechanisms. Common antifoaming agents include low‑carbon alcohols, mineral oils, organic polar compounds, and silicone resins. They can be formulated as oil‑based, aqueous solutions, emulsions, or foam‑forming types. These agents exhibit strong defoaming performance, chemical stability, physiological inertness, heat resistance, oxidation resistance, corrosion resistance, gas solubility, gas permeability, ease of dispersion and penetration, poor solubility in the defoaming system without causing physicochemical changes, and require only small dosages to achieve high efficiency. Antifoaming agents come in a wide variety of types and are used in numerous applications.
Defoamers are agents that exert defoaming effects through chemical and interfacial‑chemical mechanisms. Common defoaming substances include low‑carbon alcohols, mineral oils, organic polar compounds, and silicone resins. They can be formulated as oil‑based, solution‑based, emulsion‑based, or foam‑based products. Defoamers are characterized by strong defoaming performance, chemical stability, physiological inertness, heat resistance, oxidation resistance, corrosion resistance, gas solubility, gas permeability, ease of diffusion and penetration, poor solubility in the defoaming system without causing physicochemical changes, and low dosage requirements, making them highly efficient. A wide variety of defoamer types is available, with applications spanning numerous industries.
In the use of defoamers, unexpected issues can arise; one common problem is oil floating. So, what causes oil floating when using a defoamer? Here’s what the defoamer manufacturer has to say.
1. It is due to the material itself.
Defoamers are typically mixtures, primarily serving as carriers for the defoaming agents, though they may also consist of additives. There are many types of defoamers, with common ingredients including silicone oils, polyether compounds, and higher alcohols; some formulations also incorporate mineral oils and vegetable oils. The presence of these substances can readily lead to oiling issues.
2. It could also be due to the carrier.
Its carrier typically includes water, solvents, and other media, such as aliphatic hydrocarbons, aromatic hydrocarbons, and oxygen‑containing solvents. In addition, defoamers may be formulated with various oil‑based additives, including thickeners and preservatives, which can also contribute to oiling.
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