Rustproof corrosion inhibitor and preparation method and application thereof

A technology of corrosion inhibitor and defoamer, which is applied in the field of antirust and corrosion inhibitor and its preparation, can solve the problems that water-based antirust agent cannot fully meet the needs of the market, the hazards of environmental operators, and the unsatisfactory water solubility. Achieve good anti-rust and anti-corrosion effect, less harm to the environment and human body, good anti-corrosion performance and anti-rust performance

Active Publication Date: 2017-12-15
ACADEMY OF ARMORED FORCES ENG PLA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the existing water-based antirust agents are toxic, which will cause certain harm to the environment and operators, and are not conducive to environmental protection; weakens the rust resistance
In short, the existing water-based rust inhibitors cannot fully meet the needs of the market

Method used

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  • Rustproof corrosion inhibitor and preparation method and application thereof
  • Rustproof corrosion inhibitor and preparation method and application thereof
  • Rustproof corrosion inhibitor and preparation method and application thereof

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preparation example Construction

[0070] In a second aspect, this embodiment provides a method for preparing the above-mentioned antirust and corrosion inhibitor, comprising the following steps:

[0071] (a) First heat the mixture of phytic acid, water, acrylamide, glutamic acid, sodium benzoate, triethanolamine, ethanolamine, disodium hydrogen phosphate, sodium molybdate, complexing agent and film-forming agent to 50-60°C ;

[0072] (b) Add defoamer again, continue heating to 85-90°C, keep warm for 2-3 hours, let cool, and obtain the rust-proof and corrosion-inhibitor.

[0073] In an optional embodiment, in step (a), a pH stabilizer is also added.

[0074] The preparation method of the anti-rust and corrosion inhibitor of the present invention has simple process and convenient operation, no special preparation equipment is required in the whole preparation process, and the product obtained by the method has good stability and is not prone to phenomena such as delamination and precipitation. And excellent ru...

Embodiment 1

[0084] An antirust and corrosion inhibitor, mainly prepared from the following raw materials in parts by weight:

[0085] 1 part of phytic acid, 60 parts of water, 0.1 part of acrylamide, 0.05 part of glutamic acid, 1 part of sodium benzoate, 5 parts of triethanolamine, 1 part of ethanolamine, 0.1 part of disodium hydrogen phosphate, 5 parts of sodium molybdate, disodium EDTA 0.2 part, 0.5 part of horse-propylene copolymer, 0.1 part of polydimethylsiloxane, and an appropriate amount of sodium hydroxide, so that the pH value of the antirust and corrosion inhibitor = 10.

Embodiment 2

[0087] An antirust and corrosion inhibitor, mainly prepared from the following raw materials in parts by weight:

[0088] 10 parts of phytic acid, 85 parts of water, 1 part of acrylamide, 0.3 parts of glutamic acid, 5 parts of sodium benzoate, 15 parts of triethanolamine, 5 parts of ethanolamine, 1 part of disodium hydrogen phosphate, 15 parts of sodium molybdate, disodium EDTA 2 parts, 3 parts of horse-propylene copolymer, 1 part of polydimethylsiloxane, and an appropriate amount of sodium hydroxide, so that the pH value of the antirust and corrosion inhibitor = 10.

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Abstract

The invention relates to the technical field of metal corrosion prevention, in particular to a rustproof corrosion inhibitor and a preparation method and application thereof. The rustproof corrosion inhibitor is mainly prepared from, by weight, 1-10 parts of phytic acid, 60-85 parts of water, 0.1-1 part of acrylamide, 0.05-0.3 part of glutamic acid, 1-5 parts of sodium benzoate, 5-15 parts of triethanolamine, 1-5 parts of ethanolamine, 0.1-1 part of disodium hydrogen phosphate, 5-15 parts of sodium molybdate, 0.2-2 parts of a complexing agent, 0.5-3 parts of a film forming agent and 0.1-1 part of a defoaming agent. According to the rustproof corrosion inhibitor and the preparation method and application thereof, the corrosion speed of metal materials can be effectively decreased, and the corrosion resistance and the rust prevention property are good; and the rustproof corrosion inhibitor is particularly suitable for corrosion prevention and rust prevention of steel metal materials washed by ultrahigh-pressure water jet flow, and the problem that after ultrahigh-pressure water jet flow cleaning is conducted during maintenance, naval ships are prone to corrosion before coating can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of metal anticorrosion, in particular to an antirust and corrosion inhibitor and its preparation method and application. Background technique [0002] Due to the strong corrosion of seawater and the strong adhesion of marine organisms, the underwater parts of ships, submarine oil facilities, power generation facilities, etc., make the surface of the underwater parts adhere to hard-to-remove shellfish, scales and rust spots, which seriously affect the service life of such facilities. In recent years, ultra-high pressure water jet cleaning technology has played a lot of roles in the cleaning of these facilities as a relatively effective cleaning technology. It is a high-tech cleaning technology that has an absolute advantage in the world. The pump is pressurized to hundreds or even thousands of atmospheric pressure, and then through the special nozzle, the water flow with high concentration of energy is spray...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/08
CPCC23F11/08
Inventor 邱骥宋巍孙晓峰李占明谭建龙史玉鹏巴德玛雷瑞华
Owner ACADEMY OF ARMORED FORCES ENG PLA
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