Deep eutectic solvent type hot galvanizing additive and preparation method and application thereof

Abstract

The invention belongs to the technical field of plating assistant additives, and discloses a deep eutectic solvent type hot galvanizing additive and a preparation method and application thereof. The deep eutectic solvent type hot galvanizing additive is prepared by heating a deep eutectic solvent, a nonionic surfactant, inorganic salt and deionized water according to the weight ratio of (30-70): (1-20): (3-8): (1-10), mixing the materials uniformly and standing the mixture. The additive is suitable for being directly added into a plating assistant and applied to a hot galvanizing process, molten zinc splashing in the galvanizing process can be effectively prevented, molten zinc loss is reduced, the galvanizing speed is increased, the yield is increased, consumption of ammonium zinc chloride in the plating assistant is reduced, and the carrying amount of iron ions can be remarkably reduced; and the drying time of a plating agent is shortened, the production efficiency is improved, residual oil stains on the surface of a plated part are effectively removed, air is isolated, secondary rusting caused by oxidation is relieved, skip plating is obviously reduced, the molten zinc splashing strength is weakened, the risk of accidents such as scalding is reduced, and meanwhile smoke reduction and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of plating flux, and relates to a hot-dip galvanizing additive, in particular to a deep eutectic solvent-based hot-dip galvanizing additive and a preparation method and application thereof. Background technique [0002] With the rapid development of the economy, the demand for steel continues to increase. However, in addition to being exposed to the atmosphere, steel products will also be corroded to varying degrees when they are used in environmental conditions such as seawater or soil. In order to ensure normal use and prolong the service life of steel products, the anti-corrosion technology of steel has always been valued by people. Hot-dip galvanizing is one of the most effective means to delay the corrosion of steel materials. Compared with other metal protection methods, the hot-dip galvanizing process will form a double protection of electrochemical and physical barriers on the coating, and the bondin...

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Problems solved by technology

[0004] Chinese invention patent applications CN1036411A (named: water-soluble fluxing agent for hot-dip aluminum plating), CN1356404A (named: water-soluble flux for hot-dip galvanized aluminum alloys on steel materials) Flux), CN101126142A (name: additives for hot-dip galvanizing flux), etc. all propose improvements to the flux, which strengthens the flux effect, but ignores problems such as economy and environmental protection, and the safety cannot be obtained effectively. Assure

[0005]Deep eutectic solvent is two or more different hydrogen bond acceptors and hydrogen bond donors, which are mixed at a certain molar ratio at a certain temperature to form a uniform Transparent liquid is widely considered as a new analogue of ionic liquid, but in fact, the chemical characteristics of deep eutectic solvent and ionic liquid are obviously different, and there is no report on the application of deep eutectic solvent in the field of hot-dip galvanizing

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