Metal rust inhibitor and preparation method thereof

Abstract

The invention relates to a metal rust inhibitor which comprises a film forming agent, a corrosion inhibitor and an auxiliary and is characterized in that the film forming agent comprises the following components in parts by weight: 15-20 parts of polyethylene glycol-200 dimethacrylate and 20-30 parts of ethanol; the corrosion inhibitor comprises the following components in parts by weight: 8-10 parts of maleopimaric acid diethanolamine, 5-10 parts of dodecanedioic acid sodium amidate, 5-10 parts of boroglyceride triethanolamine salt, 1-5 parts of sodium doodecyl benzene sulfonate, 3-5 parts of ammonium persulfate, 0.5-1 part of an emulsifier OP-10 and 15-25 parts of deionized water; and the auxiliary comprises the following components in parts by weight: 3-5 parts of urotropine or sodium gluconate, 5-10 parts of sorbitan fatty acid ester, 3-5 parts of zinc naphthenate, 10-15 parts of diatomite and 5-10 parts of deionized water. The metal rust inhibitor has a wide application range and a stable rust inhibiting effect and is safe and environment-friendly. The invention further relates to a preparation method of the metal rust inhibitor. The preparation method has simple steps and high efficiency.

Description

technical field [0001] The invention relates to the technical field of metal anticorrosion, in particular to an environment-friendly metal antirust agent and a preparation method thereof. Background technique [0002] During the storage, transportation and use of metals, due to the influence of water vapor, oxygen, acid, alkali, salt and carbide in the ambient atmosphere, physical and chemical changes will occur under certain temperature, humidity and time extension conditions. Rust occurs. In order to improve metal performance and reduce metal waste caused by corrosion, it is necessary to carry out antirust treatment on the metal surface. [0003] At present, the antirust treatment of metal is generally to apply water-based antirust agent on the metal surface to achieve antirust effect. The traditional water-based antirust agent is to add a certain amount of antirust agent to the water solvent to prevent the occurrence of chemical or electrochemical action. In the prior ...

AI Technical Summary

Problems solved by technology

However, the main materials used in such antirust agents are highly toxic and have great harm to the human body and the environment.

At present, my country has made some progress in reducing the amount of nitrite, but the anti-rust effect is still unsatisfactory, and the pollution problems caused by it have not been eliminated; although chromic acid and dichromate have good anti-rust effects, However, it has environmental pollution and toxicity problems, and it belongs to the field of prohibited compounds

[0004] In order to solve the above problems, the Chinese invention patent application "a water-based metal rust preventive agent and its preparation method" (application number: 201310310044.X) with the application publication number CN103436889A discloses a rust preventive agent whose key component is boric acid Morpholine, tin laurate, alkylphenol polyoxyethylene ether and other substances do not contain toxic and heavy metal components, and can reach the level of antirust performance of nitrite water-based antirust agent products on ferrous metals, and the operation is simple and can be removed by soaking The anti-rust treatment of equipment can be carried out by spraying and spraying methods, but the anti-rust film formed on the metal surface by the anti-rust agent is very thin, which cannot effectively prevent the external environment from corroding the metal for a long time, and can only meet the requirements for copper, aluminum, etc. The adaptability of non-ferrous metals has great limitations in the scope of use

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