Composite volatile corrosion inhibitor and application thereof in anticorrosion protection of large equipment

Abstract

The invention provides a composite volatile corrosion inhibitor and an application thereof in anticorrosion protection of large equipment, and belongs to the technical field of anticorrosion and antirust materials. The composite volatile corrosion inhibitor comprises, by weight, 10-55 parts of sodium tungstate, 10-55 parts of sodium molybdate, 10-55 parts of 2-methylimidazole, and 0-35 parts of urea. The composite volatile corrosion inhibitor is dissolved in water or absolute ethyl alcohol and then coats textiles, an obtained textile material containing the composite volatile corrosion inhibitor is matched with other textiles to prepare a multilayer composite anticorrosion protection cover, and then high-efficiency anticorrosion protection can be carried out on the large equipment in a simple warehouse or an open-air natural environment through non-strictly closed simple operations such as coating, and bundling; and the composite volatile corrosion inhibitor is reusable, convenient touse and low in cost, the mobility of the integral equipment is guaranteed, the good technical state of the equipment in service is effectively maintained, and the integral support capability of the equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion and anti-rust materials, and relates to a composite gas-phase corrosion inhibitor and its application in large-scale equipment anti-corrosion protection. Background technique [0002] In the southeastern coastal areas of my country, due to natural environments such as high temperature, high humidity, and high salt spray, the corrosion of metal structural parts has always been a major problem that has restricted the management and use of equipment, seriously affecting the technical performance of various equipment and facilities. Due to limited conditions, in-service equipment is usually stored in ordinary warehouses or outdoors, and corrosion problems are very prominent. [0003] At present, in the storage and storage of equipment, the method of strictly sealing the envelope or introducing protective gas into it is mainly used to slow down atmospheric corrosion. There are the following out...

AI Technical Summary

Problems solved by technology

There are several outstanding problems in the above-mentioned sealing method: the first is that the process is complicated and the technical requirements are high

It not only requires high barrier materials, but also has strict requirements on sealing. Improper operation will cause corrosive gas to enter the envelope and cause serious corrosion to metal materials.

The second is that the operation is difficult. Sealing with an envelope is more practical for small parts or equipment, but for large equipment, the difficulty of strict airtightness is greatly increased

The third is that there is a large demand for resources. In the long-term storage, the protective gas must be continuously fed or frequently replenished. Resources such as inflatable equipment and electricity are also required, which greatly increases the cost of equipment storage.

Gas phase antirust film and gas phase antirust paper are mostly used in the storage and transportation of metal equipment or parts, and strict sealing must be ensured to achieve anticorrosion effects. In addition, the vapor phase antirust film and gas phase antirust paper are poorly reusable

The anti-rust envelope mainly uses high-barrier materials to strictly seal small equipment, and at the same time fills the envelope with protective gas or puts gas-phase corrosion inhibitor powder (pressed into tablets, pills, and tablets of different shapes) into gauze , Hang in the envelope in the seamless cloth bag or directly walk on different parts of the equipment that need to be protected to achieve the purpose of rust prevention. In this way, the protective gas and corrosion inhibitor must be regularly replenished or replaced, which increases the difficulty and cost of protection work

The preconditions of the above protection methods must be strictly sealed, and the material does not have a waterproof and breathable layer structure design, which brings inconvenience to the operation of large equipment in the field and limits the mobility of the complete equipment

[0005] At present, there are no studies and reports on the protective materials that are not strictly sealed.

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