Application principle of surfactant in the function of water-based metal cleaner

2022-06-07 18:36:05

In addition to the cleaning effect of the above cleaning agent, the emulsion prepared from surfactant also has the similar dissolution principle of solvent. The existence of internal oil phase will greatly enhance its dissolution and cleaning effect on oil stains. The ideal cleaning emulsion generally has the following four characteristics:

(1) The emulsion is stable, and the oil has strong solubility relative to the oil stain.

(2) The viscosity of oil phase is low, and it is easy to wash with water.

(3) The oil phase is good, non-volatile, non-toxic, and the cleaning process will not produce pollution.

(4) Easy to demulsify, recycle and reuse.

In addition to changing the activity of the solution in aqueous solution, that is, reducing its surface tension, various properties related to washing, such as penetration, adsorption, wetting, dispersion, emulsification, gelling and foaming, will change significantly near the critical micelle concentration.

Surfactants used in synthetic detergents are not very pure single compounds and often contain more or less adjacent homologues. Moreover, surfactants account for less than 1/3 of the total weight of detergent formulations, and the rest are various additives and auxiliary agents, which play different roles. Therefore, the role of synthetic detergent composed of multiple groups in the washing process is a complex and comprehensive process.

The application principle of surfactants in water-based metal cleaning agents is to weaken or offset the adhesion of oil stains on the metal surface through the wetting, penetration, emulsification, dispersion, solubilization and other properties of surfactants, and accelerate the oil stains to separate from the metal surface and enter the washing solution to be emulsified, dispersed and suspended or solubilized micelles through mechanical and physical methods.