Universal corrosion inhibitor for multiple metal plates and preparation method thereof

Abstract

The invention relates to a universal corrosion inhibitor for multiple metal plates and a preparation method thereof. The universal corrosion inhibitor is characterized in that the universal corrosioninhibitor comprise the following material components in percentage by mass: 8-12% of 3-phenyl-2-sodium acrylate, 19-23.4% of sodium benzoate, 4-6% of ammonium benzoate, 18-22% of ammonium molybdate, 7.8-9.8% of benzotriazole, 8-10% of 1-aminobenzotriazole, 5-9% of 2-methylimidazole and 16-20% of caprylic acid which are prepared to be dissolved in 2-4 times of deionized water at six steps; the corrosion inhibitor is coated on base materials such as rust-proof base paper and cloth; the basis weight of the base material such as the rust-proof base paper or the cloth is more than 40g / m<2>; and thecoating amount of the universal corrosion inhibitor for the multiple metal plates is 8-10g / m<2>. The antirust performance of a prepared antirust packaging material can meet the standard requirementsof QB / T 1319 Volatile Rust Preventive Paper and the like, and the performances of gas phase antirust screening tests and dynamic contact damp-heat tests on various metal plates can reach more than 7 cycles.

Description

technical field [0001] The invention belongs to the field of metal corrosion and protection, and more specifically relates to a general-purpose corrosion inhibitor for metal multi-plates and a preparation method thereof. Background technique [0002] At present, the metal sheets produced by various steel mills, including pickling sheets, ordinary cold-rolled sheets, galvanized steel sheets, electrical steel sheets, tin-plated steel sheets, and color-coated steel sheets, are in the production process and storage and transportation process, in order to avoid exposure to the atmosphere. Corrosion, all need to be treated with anti-rust packaging. Among them, in order to prevent the plate from corroding, the main packaging materials used are vapor phase anti-rust materials, most of which are anti-rust paper. The corrosion inhibitor in the anti-rust paper can play an excellent anti-rust protection effect on the metal plate, and can protect the plate from corrosion during storage ...

AI Technical Summary

Problems solved by technology

These antirust papers have excellent performance and are stable and reliable in use, but there are also problems, mainly as follows: (1) When there are many kinds of boards to be packed on the packaging site, various types and specifications of packaging materials must be prepared, which takes up a large area of ​​the site, Occupying warehouse space and other issues; (2) The anti-rust paper must be matched with the plate and cannot be mixed. If the galvanized steel plate cannot be packaged with anti-rust paper for steel, otherwise the required protection effect will not be achieved, and the opposite will be achieved if it is serious. Corrosion effect

However, when multiple types of anti-rust paper coexist on site, due to the completeness of product identification, personnel awareness and proficiency, misuse occurs from time to time. A steel factory once misused anti-rust paper for steel when packaging galvanized steel coils. Paper packaging, causing thousands of tons of products to rust, resulting in huge losses

Therefore, there is a risk of on-site misuse of special anti-rust paper; (3) In the current automated packaging production lines that are gradually emerging, the places and equipment for placing packaging materials such as anti-rust paper are very limited, and generally only suitable for one type of anti-rust paper Paper placement, which is a challenge to the current situation where a variety of special anti-rust papers are commonly used, that is, the current special anti-rust paper cannot meet the requirements of automatic packaging lines