Super-water-resistance peelable rust inhibitor for metal surfaces

Abstract

The invention discloses a super-water-resistance peelable rust inhibitor for metal surfaces. The rust inhibitor is prepared from the following raw materials in parts by weight: 0.5-1 part of alkylated diphenylamine, 0.3-0.5 part of anhydrous lanolin, 0.4-0.5 part of phosphorus aluminum heteropoly acid, 40-50 parts of polyvinyl alcohol, 12-15 parts of polyethyleneglycol, 0.4-0.6 part of emulsifier op10, 0.3-0.5 part of glycerol, 0.6-0.8 part of urotropine, 6-8 parts of benzotriazole, 6-7 parts of sodium benzoate, 2-3 parts of lauryl sodium sulfate, 0.4-0.6 part of succinic aldehyde, 4-5 parts of nano cellulose, 2.1-2.5 parts of graphite powder, 1.3-1.7 parts of pentaerythritol oleate, 0.6-1 part of sodium tripolyphosphate, 2.1-2.5 parts of dimethylacrylamide and a right amount of deionized water. The rust inhibitor for metal surfaces has the advantages of high adhesive force, favorable film-forming properties, favorable damp heat resistance, high salt spray resistance, favorable rust resistance and long corrosion inhibition time, and is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment agents, in particular to an antirust agent for super water-resistant and peelable metal surfaces. Background technique [0002] According to statistics, every year in the world, steel products with a total weight equivalent to 10-20% of the annual metal output cannot be used due to corrosion, rust and other reasons. For this reason, people have adopted various anti-rust methods to avoid rust and reduce loss. There are various kinds of antirust agents, among which sodium nitrite has been favored and widely used because of its excellent antirust performance and low price. A lot of research and development work has been carried out, and a variety of alkyl, alkoxy, halo, naphthoic acids and their derivatives, nitrobenzoic acids, and borates, borates, and molybdates have been prepared. The main material to replace the new water-soluble rust inhibitor of sodium nitrite. Although these...

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Problems solved by technology

[0003] Guo Jun proposed in the article "Development of PVA Water-Soluble Polymer Peelable Antirust Film" that by adding antirust agent and other additives to polyvinyl alcohol, it is placed in a beaker in a constant temperature water bath at a temperature of 99°C. Heating in middle temperature until completely dissolved, and then uniformly coating it on the metal surface by coating casting method, drying to form a film, and measuring the performance of the film. The experimental results show that the surface has good rust resistance. In cold water below 40 ° C, almost It is completely insoluble in water, but when placed in hot water above 40°C, the film will gradually become soft and thin, and finally dissolve completely, so the application area is limited