Wax removal liquid and application and preparation method thereof

Abstract

The invention relates to the technical field of metal surface treatment, in particular to wax removal liquid and an application and a preparation method thereof. The wax removal liquid comprises glycerin monostearate, sodium hydroxide, oleic acid, a nonionic surfactant, citric acid, sodium gluconate, glycolic acid, sodium acetate, isohexylene glycol and water. The wax removal liquid is prepared by the following steps: stirring and mixing sodium hydroxide, glyceryl monostearate and oleic acid, then adding fatty alcohol-polyoxyethylene ether, 2-propyl heptanol ethoxylate, alkynediol ethoxylate, isomeric alcohol polyoxyethylene ether and isohexylene glycol, and stirring and mixing, and dissolving the citric acid, the sodium gluconate, the sodium acetate and the glycolic acid in water, adding, stirring and mixing, thereby obtaining the wax removal liquid. The wax removal liquid provided by the invention does not contain phosphorus or nitrogen, has the characteristics of safety and environmental protection, is used for wax removal treatment of metal, and can prevent a high-gloss surface of a wax-removed aluminum material from being corroded so as to prevent the surface of the aluminum material from being corroded to cause surface fogging.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, more specifically, it relates to a wax removal water and its application and preparation method. Background technique [0002] The middle frame of many mobile phones is obtained by processing aluminum. After mechanical polishing with solid wax, the roughness of the metal surface is reduced, and the oxide layer on the surface of the aluminum is removed to obtain a bright and smooth surface. The subsequent process of this process is anodic oxidation. One of the conditions for this process is to ensure that there is no residue on the surface of the workpiece, in order to avoid defects in the anodized workpiece. [0003] However, after the aluminum is polished, a layer of polishing wax will remain on the surface. The main components of this wax are paraffin wax, higher fatty acids, alumina powder particles, and grinding wheel slag and metal powder generated during the grinding process...

AI Technical Summary

Problems solved by technology

The organic solvent method generally uses solvents such as trichlorethylene and solvent oil to clean the wax scale on the surface of the workpiece by means of ultrasonic waves. Although the organic solvent method has a good wax removal effect, it needs to consume a large amount of solvent stock solution, and the solvent is easy to volatilize, damaging the environment and causing harm Human health, and the solvent waste liquid is difficult to deal with, and some solvents are flammable, posing a great safety hazard, so the organic solvent method is banned in more and more places

[0005] And the dewaxing water that water-based cleaning agent method needs to use mostly is all nitrogen-containing cleaning agents, such as the Chinese invention patent whose notification number is CN102877082B, which discloses a kind of dewaxing water for cleaning magnesium alloy or aluminum alloy workpieces , its main components include nitrogen-containing components such as triethanolamine and coconut oil diethanolamide, which is not conducive to improving environmental protection requirements

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