Corrosion-resistant gas-phase rust inhibitor, preparation method thereof and gas-phase rust-resistant diaphragm capsule

Abstract

The invention belongs to the technical field of metal corrosion-resistant materials, and particularly relates to a corrosion-resistant gas-phase corrosion inhibitor, a preparation method thereof and a gas-phase corrosion-resistant film box. The corrosion-resistant gas-phase corrosion inhibitor comprises the following raw materials: organic amine, an azole derivative, molybdate and an alcohol-water mixed solvent, the structural formula of the azole derivative is shown in the claims, and the high-corrosion-resistant gas-phase corrosion inhibitor is a solution of a compound of three corrosion inhibitors including the organic amine, the azole derivative and the molybdate. Wherein the nitrogen azole derivative is a volatile liquid macromolecule containing fragrance, a nitrogen azole ring structure with large steric hindrance and amido are arranged on the nitrogen azole derivative, an efficient anti-corrosion effect can be obtained when the nitrogen azole derivative is compounded with organic amine and a molybdate corrosion inhibitor, and the nitrogen azole derivative is suitable for regions with high acid gas content; the high-corrosion-resistance gas-phase corrosion inhibitor is placed in the membrane box covered with the modified carbon nano tube / polyvinylidene fluoride composite membrane, and the corrosion-resistant component can be released at a controllable speed by means of the aminated and modified oriented carbon nano tube in the membrane.

Description

technical field [0001] The invention belongs to the technical field of metal anti-rust materials, and in particular relates to an anti-corrosion gas phase anti-rust agent, a preparation method thereof and a gas-phase anti-rust membrane box. Background technique [0002] Vapor-phase rust inhibitors are a class of anti-rust chemicals that do not come into direct contact with metals when used, and work by volatilizing to reach the metal surface at room temperature. They have the advantages of being easy to use and not limited by the geometric shape and structure of the equipment, so they develop rapidly. , has gradually replaced butter, wax, anti-rust oil and other outdated packaging methods, and has become one of the main materials to prevent corrosion of electrical equipment. However, at present, there are few varieties of commercial vapor phase antirust products commonly used, and there are defects that they are highly toxic to the human body or the environment, and the vola...

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Problems solved by technology

[0004] patent CN201910025513.0 discloses a vapor phase rust inhibitor and its preparation method and application in corrosion protection of building steel bars. The rust inhibitor includes rust inhibitors and Solvent, the weight ratio of which is (50-60): (40-50), the solvent includes organic solvents and inorganic solvents, and the antirust component includes the following raw materials in parts by weight: 45-50 parts of aliphatic amino acids, 20 parts of triethanolamine -25 parts, 3-5 parts of benzotriazole, and 25-30 parts of sodium benzoate. Although the rust inhibitor has excellent anti-rust effect, easy operation, low toxicity and environmental protection, the anti-rust time is not long, and the corrosion inhibition process is uncontrollable. And the anti-corrosion effect is low, and it is not suitable for rust prevention in coastal areas; the applicant's previous application CN201910622748.8 disclosed a gas-phase rust inhibitor and a slow-release gas-phase rust inhibitor containing it. The gas-phase rust inhibitor includes weight The ratio is (60-70):(10-20):(10-20) anti-rust components, polyvinyl alcohol and solvent, the anti-rust components include 40-50 parts of the first aliphatic amino acid, 20-25 parts of organic amine , 5-10 parts of the second amino acid alkyl ester and 5-20 parts of benzoate, the gas-phase rust-inhibiting membrane with slow-release function of the membrane box is used in conjunction with the gas-phase rust-inhibiting agent provided by the present invention, so that the volatile gas-phase The anti-rust components volatilize slowly and evenly, and can inhibit corrosion for a long time. Although the anti-rust effect is better and the release of gas during the anti-rust process is controllable, it also has the problem of low anti-corrosion effect and is not suitable for rust prevention in coastal areas.

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