There are many kinds of defoaming agents, oily, solvent, silicone, emulsion and solid powder.And defoaming agents have the following properties:

      1, strong defoaming ability, less dosage;

      2. The basic properties of the system will not be affected after the addition of defoaming agent;

      3, small surface tension;

      4, good balance with the surface;

      5. Good dispersity and permeability;

      6, good heat and acid and alkali resistance;

      7, chemical stability, strong oxidation resistance;

      8, gas solubility, good permeability;

      9. Small solubility in foaming solution;

      10, high physiological safety.