A kind of rust treatment liquid suitable for high humidity area and preparation method thereof

Abstract

The invention provides a rust treatment solution applicable to a high-humidity region and a preparation method of the rust treatment solution. The rust treatment solution comprises the following components in mass percentage: 20-25% of mixed acid, 30-50% of mixed alcohol, 0.5-1% of tannic acid, 0.5-1% of a zinc layer passivation agent, 2-3% of a rust layer passivation agent, 1-2% of a rust layer conversion agent, 0.1-0.5% of a film formation promoting agent, 0.1-0.3% of a catalyst, 0.5-1% of a permeating agent, 0.1% of a surfactant, 0.5-2% of a corrosion inhibitor, 0.1-1% of an anti-flash rust agent and the balance of water. The rust treatment solution is used for solving the problems that the existing rust treatment solution is slow in drying in a humid climate, liable to causing re-rusting or incomplete conversion and the like. The rust treatment solution provided by the invention belongs to the field of metal rust protection.

Description

technical field

[0001] The invention relates to a rust treatment solution, which belongs to the field of metal rust prevention. Background technique

[0002] According to statistics, the direct economic loss caused by metal corrosion accounts for about 4% of the gross national product in my country every year. Therefore, the corrosion protection of metals has attracted more and more attention. In the previous metal anti-corrosion coating technology, the metal surface pretreatment before painting accounted for about 45% of the total price of the entire coating project. If the surface treatment processes such as rust removal, oil removal, and water removal can be reduced or omitted, the coating cost can be significantly reduced, and the painting process can be greatly simplified at the same time, thereby reducing labor intensity and reducing the harm of rust dust to the human body. Based on the above purposes, a water-based rust treatment solution has been developed, which c...

Examples

Embodiment 1

[0018] This embodiment provides a rust treatment solution, which is composed of the following raw materials (mass parts):

[0019] Mixed acid 20-25 parts

[0020] Mixed alcohol 30-50 parts

[0021] 0.5-1 parts of tannic acid

[0022] Zinc layer passivator 0.5-1 part

[0023] 2-3 parts of rust passivator

[0024] 1-2 parts of rust conversion agent

[0025] Film-forming accelerator 0.1-0.5 parts

[0026] Catalyst 0.1-0.3 parts

[0027] Penetrant 0.5-1 part

[0028] Surfactant 0.1 parts

[0029] Corrosion inhibitor 0.5-2 parts

[0030] Anti-flash rust agent 0.1-1 parts

[0031] The balance is water.

[0032] Among them, mixed acid is mixed acid, which is made by mixing 97.5 parts of phosphoric acid, 2 parts of oxalic acid and 0.5 part of hydrochloric acid; mixed alcohol is mixed alcohol, which is made by mixing tert-butanol, isopropanol and propylene glycol in a mass ratio of 1:1:1 ; The zinc layer passivator is a fast and efficient passivator, and the passivation of t...

Embodiment 2

[0034] This embodiment provides a rust treatment solution, which consists of the following raw materials (parts by mass, subject to a total of 100 parts):

[0035] Mixed acid 20 parts

[0036] 30 parts of mixed alcohol

[0037] 0.5 parts of tannic acid

[0038] 0.5 parts of zinc layer passivator

[0039] Rust layer passivator 2 parts

[0040] 1 part rust conversion agent

[0041] Film-forming accelerator 0.1 part

[0042] Catalyst 0.1 part

[0043] Penetrant 0.5 parts

[0044] Surfactant 0.1 part

[0045] Corrosion inhibitor 0.5 part

[0046] Anti-flash rust agent 0.1 parts

[0047] The balance is water.

[0048] Among them, mixed acid is mixed acid, which is made by mixing 97.5 parts of phosphoric acid, 2 parts of oxalic acid and 0.5 part of hydrochloric acid; mixed alcohol is mixed alcohol, which is made by mixing tert-butanol, isopropanol and propylene glycol in a mass ratio of 1:1:1 ; The zinc layer passivator is a fast and efficient passivator, and the passivat...

Embodiment 3

[0050] This embodiment provides a rust treatment solution, which consists of the following raw materials (parts by mass, subject to a total of 100 parts):

[0051] Mixed acid 22 parts

[0052] Mixed alcohol 35 parts

[0053] 1 part tannic acid

[0054] 0.7 parts of zinc layer passivator

[0055] Rust layer passivator 2 parts

[0056] 1 part rust conversion agent

[0057] Film-forming accelerator 0.1 part

[0058] Catalyst 0.1 part

[0059] Penetrant 0.5 parts

[0060] Surfactant 0.1 part

[0061] Corrosion inhibitor 0.5 part

[0062] Anti-flash rust agent 0.1 part

[0063] The balance is water.

[0064] Among them, the mixed acid is 97.5 parts of phosphoric acid, 2 parts of oxalic acid and 0.5 part of hydrochloric acid; High-efficiency passivator, the passivation of the zinc layer can be completed within 1 second after brushing. The passivating agent for the zinc layer is chromic anhydride, chromium trichloride, and silver nitrate mixed at a mass ratio of 6:4:1; th...

technical field

[0001] The invention relates to a rust treatment solution, which belongs to the field of metal rust prevention. Background technique

[0002] According to statistics, the direct economic loss caused by metal corrosion accounts for about 4% of the gross national product in my country every year. Therefore, the corrosion protection of metals has attracted more and more attention. In the previous metal anti-corrosion coating technology, the metal surface pretreatment before painting accounted for about 45% of the total price of the entire coating project. If the surface treatment processes such as rust removal, oil removal, and water removal can be reduced or omitted, the coating cost can be significantly reduced, and the painting process can be greatly simplified at the same time, thereby reducing labor intensity and reducing the harm of rust dust to the human body. Based on the above purposes, a water-based rust treatment solution has been developed, which c...

Examples

Embodiment 1

[0018] This embodiment provides a rust treatment solution, which is composed of the following raw materials (mass parts):

[0019] Mixed acid 20-25 parts

[0020] Mixed alcohol 30-50 parts

[0021] 0.5-1 parts of tannic acid

[0022] Zinc layer passivator 0.5-1 part

[0023] 2-3 parts of rust passivator

[0024] 1-2 parts of rust conversion agent

[0025] Film-forming accelerator 0.1-0.5 parts

[0026] Catalyst 0.1-0.3 parts

[0027] Penetrant 0.5-1 part

[0028] Surfactant 0.1 parts

[0029] Corrosion inhibitor 0.5-2 parts

[0030] Anti-flash rust agent 0.1-1 parts

[0031] The balance is water.

[0032] Among them, mixed acid is mixed acid, which is made by mixing 97.5 parts of phosphoric acid, 2 parts of oxalic acid and 0.5 part of hydrochloric acid; mixed alcohol is mixed alcohol, which is made by mixing tert-butanol, isopropanol and propylene glycol in a mass ratio of 1:1:1 ; The zinc layer passivator is a fast and efficient passivator, and the passivation of t...

Embodiment 2

[0034] This embodiment provides a rust treatment solution, which consists of the following raw materials (parts by mass, subject to a total of 100 parts):

[0035] Mixed acid 20 parts

[0036] 30 parts of mixed alcohol

[0037] 0.5 parts of tannic acid

[0038] 0.5 parts of zinc layer passivator

[0039] Rust layer passivator 2 parts

[0040] 1 part rust conversion agent

[0041] Film-forming accelerator 0.1 part

[0042] Catalyst 0.1 part

[0043] Penetrant 0.5 parts

[0044] Surfactant 0.1 part

[0045] Corrosion inhibitor 0.5 part

[0046] Anti-flash rust agent 0.1 parts

[0047] The balance is water.

[0048] Among them, mixed acid is mixed acid, which is made by mixing 97.5 parts of phosphoric acid, 2 parts of oxalic acid and 0.5 part of hydrochloric acid; mixed alcohol is mixed alcohol, which is made by mixing tert-butanol, isopropanol and propylene glycol in a mass ratio of 1:1:1 ; The zinc layer passivator is a fast and efficient passivator, and the passivat...

Embodiment 3

[0050] This embodiment provides a rust treatment solution, which consists of the following raw materials (parts by mass, subject to a total of 100 parts):

[0051] Mixed acid 22 parts

[0052] Mixed alcohol 35 parts

[0053] 1 part tannic acid

[0054] 0.7 parts of zinc layer passivator

[0055] Rust layer passivator 2 parts

[0056] 1 part rust conversion agent

[0057] Film-forming accelerator 0.1 part

[0058] Catalyst 0.1 part

[0059] Penetrant 0.5 parts

[0060] Surfactant 0.1 part

[0061] Corrosion inhibitor 0.5 part

[0062] Anti-flash rust agent 0.1 part

[0063] The balance is water.

[0064] Among them, the mixed acid is 97.5 parts of phosphoric acid, 2 parts of oxalic acid and 0.5 part of hydrochloric acid; High-efficiency passivator, the passivation of the zinc layer can be completed within 1 second after brushing. The passivating agent for the zinc layer is chromic anhydride, chromium trichloride, and silver nitrate mixed at a mass ratio of 6:4:1; th...

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