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Cleaning corrosion inhibitor for vessel

A kind of corrosion inhibitor and marine technology, which is applied in the field of marine washing corrosion inhibitor to achieve the effect of safe product use, improved anti-corrosion protection effect and easy operation.

Inactive Publication Date: 2009-08-26
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings in the prior art, especially for the corrosion protection of metal materials such as ship decks and superstructures under the atmospheric exposure state, and to design a marine flushing corrosion inhibitor, the corrosion inhibitor Remove the deposited salt film on the surface of metal materials by flushing, and at the same time form a protective film, thereby reducing the impact of corrosion and improving the effect of corrosion protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] First measure 20ml of organic phosphonic acid into the reaction container, slowly add 10ml of organic phosphonic acid, 10ml of sulfonic acid copolymer, and 10ml of polyaspartic acid under stirring conditions, mix well, and let stand for 10 minutes. Then weigh 0.1g of sodium molybdate and 0.2g of benzotriazole and add them into the mixed solution, and continue to stir until evenly mixed; then dilute the mixed solution with tap water to 400 times by volume, and mix evenly to obtain the Said marine flushing corrosion inhibitor.

Embodiment 2

[0014] First measure 40ml of organic phosphine carboxylic acid into the reaction vessel, then slowly add 20ml of ethylenediamine tetramethylene phosphonic acid, 20ml of styrenesulfonic acid-maleic anhydride copolymer, 20ml of polythene Aspartic acid, after fully mixing, let it stand for 12 minutes, then weigh 0.5g sodium molybdate and 0.5g benzotriazole respectively and add it to the mixture, continue to stir until it is evenly mixed; then pipette the mixture and weigh it by volume Dilute it with tap water to 500 times and stir evenly to obtain the corrosion inhibitor for marine flushing.

Embodiment 3

[0016] First measure 60ml of organic phosphine carboxylic acid and put it into a reaction vessel, slowly add 30ml of hydroxyethylene diphosphonic acid, 30ml of styrenesulfonic acid-maleic anhydride copolymer, and 30ml of polyaspartic acid under stirring conditions, fully After mixing, let it stand for 15 minutes, then weigh 0.3g of sodium molybdate and 0.6g of benzotriazole and add it to the mixture, continue to stir until it is evenly mixed; then dilute the mixed solution 500 times with tap water, and mix well , that is, the marine flushing corrosion inhibitor is prepared.

[0017] When the product of this embodiment is applied, 907 steel is used as the test material, and the sample size is 30mm×35mm×2mm. After degreasing, grinding, rinsing with tap water, rinsing with ethanol, and air drying, the sample was put into a desiccator, dried for 24 hours, weighed, and set aside. Use the weight loss method to evaluate the corrosion inhibition efficiency. First, hang the sample in ...

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PUM

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Abstract

The invention relates to a flushing corrosion inhibitor for the corrosion protection of metal materials on the ship deck and superstructure exposed to the atmosphere of the marine environment, which belongs to the technical field of marine corrosion protection. The raw material composition includes organic phosphine carboxylic acid, sodium molybdate, class, organic phosphonic acid, sulfonic acid copolymer and polyaspartic acid; earlier with organic phosphonic acid, organic phosphonic acid, sulfonic acid copolymer, polyaspartic acid by volume ratio (2~4):( 1~2):(1~2):(1~2) Stir and mix evenly, let it stand for 10~15 minutes, then add sodium molybdate according to the volume of the mixture according to the ratio of (0.2~0.6)g / 100mL and azoles, continue to stir until evenly mixed, and then dilute to 400-500 times with fresh water according to the volume ratio, and then the marine flushing corrosion inhibitor is prepared. The process is simple, the product is safe to use, and the operation is convenient. Washing, desalination and protection of ship metal materials in exposed state, slowing down corrosion and improving protection effect.

Description

Technical field: [0001] The invention relates to a marine flushing corrosion inhibitor, in particular to a new type of flushing corrosion inhibitor aimed at the corrosion protection of metal materials exposed to the marine environment and atmosphere on the ship's deck and superstructure. The salt is used to form a layer of protective film at the same time to improve the corrosion protection effect, and belongs to the technical field of chemical preparations for corrosion protection of metals in marine environments. Background technique: [0002] At present, in the marine environment atmosphere, the deck and superstructure of the ship are often eroded by seawater, and the marine atmosphere is also a high-salt fog environment, so the above-mentioned parts in the atmosphere exposure state often appear covered by salt film. However, salt is a very corrosive substance, and its presence will cause serious corrosion effects on the metal materials used for the deck of the ship and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/167
Inventor 蔺存国段东霞许立坤
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP