The reason why defoamer appears oil floating
In recent years, the development of defoamers has been getting faster and faster. Many industrial productions on the market need to use defoamers, but there is a problem. Why does defoamer have floating oil?
The stability of emulsion defoamers is achieved by a certain concentration of emulsifiers and stabilizers through a certain process method. Although the oily substance in the emulsion has a huge specific surface and is thermodynamically unstable, the emulsion itself is relatively stable due to the presence of a sufficient amount of emulsifiers and stabilizers. However, if the defoamer is diluted with water and working fluid or added to the defoaming system, the stable environment in which the defoamer exists will be destroyed. In the new environment, the defoamer will easily destroy the emulsion and bleaching oil.
Ordinary working fluids and defoaming systems contain organic and inorganic substances such as salts, alcohols, acids, alkalis, etc. These substances usually have demulsification effects. The defoamer is added to the defoaming medium in a small amount, and the defoamer is completely in a new and different environment. If the defoamer has a low technical level and uses some ordinary or inappropriate emulsifiers and co-emulsifiers, then this defoamer can easily destroy the emulsion. If diluted with water, there will be small viscosity and instability. After dilution, the stirring speed will be very fast, which will also cause the emulsion to break. The floating oil is as large as a needle tip, with a diameter of 0. Less than 1 mm. Some of these oil spots will not disperse for a long time, some will disperse after a while, and a thin oil film will form on the water surface, and some will even stick to the wall of the container containing the water dispersion.
