Application principle of surfactant in water-based metal cleaning agent

2022-10-21 16:53:56

The application principle of surfactant in water-based metal cleaning agent is to weaken or offset the adhesion of oil stain on metal surface through the properties of surfactant such as wetting, penetration, emulsification, dispersion and solubilization, and accelerate the oil stain to leave the metal surface by mechanical and physical methods and enter the washing solution to be emulsified, dispersed and suspended or solubilized in micelles.

Inorganic additives such as corrosion inhibitor, cosolvent, foam stabilizer, defoamer, filler, etc. shall be added when cleaning with water-based metal.

Formula: Nonylphenol polyvinyl chloride (20) ether 80% oleic acid 8% triacetic acid amine 8% boric acid triacetic acid amide 8% monobutyl acetate 8% silicone defoamer 0.2% water margin When used, dilute to 5% Note: the above percentage is the mass ratio.

A large amount of acid mist will be produced in the acid pickling process, which will not only affect the health of workers, but also pollute the environment. At the same time, it will also corrode the plant and equipment. In order to improve the rust removal effect of acid pickling and prevent acid over corrosion, surfactants are added to sulfuric acid or hydrochloric acid in the acid pickling solution to inhibit acid mist, accelerate the acid pickling speed and prevent the occurrence of over corrosion.

Fluorine surfactant can improve the wettability, permeability, diffusivity of formation rocks and the fluidity of crude oil, and is also used as a surfactant in thermal recovery technology to further improve oil displacement efficiency. The foam stabilized by fluorine surfactant is used for the formation of underground oil line flow to reduce and control the fluidity of gas driven fluid. The driving gas is inert gas, and the fluorine surfactant solution is mixed with the amphoteric or anionic hydrocarbon surfactant solution. The foam formed by this foam solution is far more stable than the foam formed by using hydrocarbon surfactant alone when contacting with oil. The more suitable fluorine surfactants are perfluorobetaine, perfluorosulfonate betaine and perfluorocarbonic acid betaine.