Most of the cleaning agents used in the cleaning machine of ultrasonic cleaning equipment are liquid detergents, which are composed of surfactants, additives and other organic solvents such as trichloroethylene.
When a substance is dissolved in water, even if its concentration is very small, it can significantly reduce the surface tension between water and air, or the interfacial tension between water and other substances. The molecular structures of water-soluble surfactants are asymmetric and polar.
In this way, the physical properties of the system, especially the interfacial tension of each phase, are greatly changed.
Surfactants can be divided into anionic, cationic, neutral and amphoteric surfactants according to the electric properties of hydrophilic groups when they are dissolved in water.
Chelating agent and some metal ions in the solution such as Ca2 +, Mg2 + form stable chelating body, so that the detergent has the function of resisting hard water. When cleaning the lens, it can combine with some substances containing Ca2 +, Mg2 + on the surface of the lens to achieve the cleaning effect.
With the addition of some additives, the following effects can be achieved:
Buffering effect: keep the pH value of detergent stable.
Corrosion resistance to metals.
It can increase the emulsifying capacity and emulsifying stability of detergent.