Views: 0 Author: Site Editor Publish Time: 2021-01-05 Origin: Site
The cleaning effect of the refining process is very complicated. First, the adhesion of the waxy saponification and oily substances on the fabric to the fabric is weakened, and the interface is gradually reduced. Under mechanical action, the oil stain is detached from the fabric and emulsified into an oil-water emulsion to prevent it from being stained again. Nonionic surfactants are often excellent emulsifiers, while anionic surfactants will form an electric double layer on the oil wax / water interface to prevent oil particles from agglomerating, which is conducive to the formation of a relatively stable emulsion system.
Secondly, it is necessary to quickly disperse the decomposition products of the alkali to prevent recontamination. This will make use of the dispersing effect of the surfactant, but also can use other inorganic or organic chelating dispersing agents.
It is difficult for a single type or structure of surfactant to effectively achieve the above effects at the same time, so it is necessary to compound more than two types of surfactants of different types and structures. The type, structure and composition can be properly adjusted to make it have a suitable hydrophilic-lipophilic balance value (HLB) to meet the requirements of emulsified oil stains; a sufficient amount of micelles and a sufficiently low CMC and surface tension. The scouring liquid system maintains excellent wettability, and has excellent emulsification, dispersion and cleaning performance.