Water-based anti-rusting liquid and preparation method thereof

Abstract

The invention discloses water-based anti-rusting liquid. The water-based anti-rusting liquid comprises raw materials of, by weight, 15-25 parts of isopropanolamine, 3.1-5.2 parts of boric acid, 25-30 parts of dimethyl dodecanedioate, 2-5 parts of a rare earth corrosion inhibitor, 1-2 parts of sodium molybdate, 4-6 parts of tartaric acid, 0.1-0.3 part of a defoaming agent, 0.1-0.2 part of a surfactant, 0.1-0.3 part of a sterilizing agent and 42-52 parts of water. The invention further discloses a preparation method of the water-based anti-rusting liquid. The preparation method includes the following steps that the raw materials are weighed according to the weight parts, the boric acid, the isopropanolamine and xylene are evenly mixed, and backflow, reduced pressure distillation and vacuum drying are conducted to obtain a material A; the material A and the dimethyl dodecanedioate are evenly mixed, heated and stirred, and then vacuum drying is conducted to obtain a material B; and the material B, the rare earth corrosion inhibitor, the sodium molybdate, the tartaric acid, the defoaming agent, the surfactant and the sterilizing agent are evenly mixed and then stirred after water is added, so that the water-based anti-rusting liquid is obtained. The water-based anti-rusting liquid is good in anti-rusting performance and free of environment pollution.

Description

technical field [0001] The invention relates to the technical field of antirust liquid, in particular to a water-based antirust liquid and a preparation method thereof. Background technique [0002] Metals are easily corroded by the surrounding environment. People usually choose anti-rust oil for surface treatment of metals, but the anti-rust oil is not easy to remove, which will bring trouble to the subsequent process; water-based anti-rust liquid will not affect the subsequent process, but the early water-based anti-rust liquid contains nitrous acid Salt will cause damage to people and the environment; there are also water-based anti-rust solutions containing phosphating solutions, which can avoid harm to the human body, but because they contain a lot of phosphorus, it is easy to cause eutrophication of water bodies; currently, some water-based anti-rust solutions on the market The anti-rust liquid avoids the problem of environmental pollution, but the anti-rust effect is...

AI Technical Summary

Problems solved by technology

[0002] Metals are easily corroded by the surrounding environment

People usually choose anti-rust oil for surface treatment of metal, but the anti-rust oil is not easy to remove, which will bring trouble to the subsequent process; water-based anti-rust liquid will not affect the subsequent process, but the early water-based anti-rust liquid contains nitrous acid Salt will cause damage to people and the environment; there are also water-based antirust solutions containing phosphating solutions, which can avoid harm to the human body, but because they contain a large amount of phosphorus, it is easy to cause eutrophication of the water body; at present, some water-based antirust solutions on the market The anti-rust liquid avoids the problem of environmental pollution, but the anti-rust effect is not high