A corrosion-resistant water-based metal rust inhibitor

A rust inhibitor and base metal technology, applied in the direction of metal material coating process, etc., can solve problems such as damage, shortening of rust prevention period, and unsatisfactory rust prevention effect.

Active Publication Date: 2021-09-03
山东硕力新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium silicate is one of the most important silicate corrosion inhibitors, but the anti-rust film formed by sodium silicate aqueous solution at room temperature is soluble in water, has poor water resistance, and is easily damaged outdoors, shortening to a certain extent. Anti-rust period, so the anti-rust effect of sodium silicate applied to metal as a separate corrosion inhibitor is not ideal

Method used

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  • A corrosion-resistant water-based metal rust inhibitor
  • A corrosion-resistant water-based metal rust inhibitor
  • A corrosion-resistant water-based metal rust inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of modified corrosion inhibitor additive is:

[0027] The first step, preparation of oleic acid imide ethyl aminopropyl silane

[0028] Add 1.1mol of methyl oleate into the reactor, replace the air in the reactor with nitrogen, heat to 95°C, then add 5g of catalyst sodium hydroxide, drop by drop 1mol of aminoethylaminopropyl dimethyl Oxysilane, keep the nitrogen flowing to get rid of the generated methanol, after the dropwise addition, continue to stir the reaction for 4h, after the reaction is over, distill under reduced pressure and vacuum dry to obtain oleic acid imide ethylaminopropylsilane A, The reaction formula is as follows:

[0029]

[0030] The second step, the preparation of modifier

[0031] S1. Add 1.1mol allyl polyoxyethylene ether, 3mmol metal platinum catalyst and 500ml toluene into the reactor, replace the air in the reactor with nitrogen, heat to 75°C, stir for 20min, add 1mol heptamethylsilane Oxygen, heat up to 105 ° C, k...

Embodiment 2

[0045] A corrosion-resistant water-based metal antirust agent, comprising the raw materials of the following parts by weight: 40 parts of corrosion inhibitor compositions, 2 parts of modified corrosion inhibition aids (prepared in Example 1), 1 part of rosin, 2 parts of boric acid, 1 part of antioxidant, 0.2 part of defoamer, 1 part of penetrant, 70 parts of distilled water;

[0046] The corrosion inhibitor composition is SiO 2 :Na 2 O: water = 52:16:32;

[0047] Described antioxidant is tert-butyl hydroquinone;

[0048] Described defoamer polyoxypropylene polyoxyethylene glyceryl ether;

[0049] Described penetration agent is oleic acid;

[0050] The preparation method of the rust inhibitor is as follows: first dissolve the corrosion inhibitor composition and the modified corrosion inhibitor additive in distilled water, then add rosin, antioxidant, defoamer and penetrating agent, and stir for 1 hour at a speed of 600rpm / min Finally, add boric acid at the end and stir slo...

Embodiment 3

[0055] A corrosion-resistant water-based metal antirust agent, comprising the raw materials of the following parts by weight: 50 parts of corrosion inhibitor compositions, 3 parts of modified corrosion inhibition aids (prepared in Example 1), 1 part of rosin, 4 parts of boric acid, 0.6 parts of antioxidant, 0.4 parts of defoamer, 2 parts of penetrant, 120 parts of distilled water;

[0056] The corrosion inhibitor composition is SiO 2 :Na 2 O: water = 50:20:34;

[0057] Described antioxidant is tert-butyl hydroquinone;

[0058] Described defoamer polyoxypropylene polyoxyethylene glyceryl ether;

[0059] Described penetration agent is oleic acid;

[0060] The preparation method of the rust inhibitor is as follows: first dissolve the corrosion inhibitor composition and the modified corrosion inhibitor additive in distilled water, then add rosin, antioxidant, defoamer and penetrating agent, and stir for 1 hour at a speed of 800rpm / min Finally, add boric acid at the end and st...

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Abstract

The invention discloses a corrosion-resistant water-based metal antirust agent, which comprises the following raw materials in parts by weight: 40-50 parts of a corrosion inhibitor composition, 2-3.5 parts of a modified corrosion inhibitor, 0.5-1 part of rosin, 2 ‑4 parts of boric acid, 0.5‑1 part of antioxidant, 0.2‑0.5 part of defoamer, 1‑3 part of penetrating agent, 80‑120 part of distilled water; the preparation method of this antirust agent is: first corrosion inhibitor composition and Dissolve the modified corrosion inhibitor in distilled water, then add rosin, antioxidant, defoamer and penetrating agent, stir at a speed of 500‑800rpm / min for 1h, and finally add boric acid, at a speed of 60‑100rpm / min Under slow stirring for 20-30min, the antirust agent is obtained; water glass is used as the main corrosion inhibitor, and boric acid and modified corrosion inhibitors are added to modify the water glass, which makes up for the shortcomings of water glass antirust, and the prepared metal The anti-rust agent has a good and long-lasting anti-rust effect.

Description

technical field [0001] The invention belongs to the technical field of antirust, and in particular relates to a corrosion-resistant water-based metal antirust agent. Background technique [0002] Metal corrosion not only causes huge economic losses, but sometimes even endangers personal safety. Therefore, the requirements for the corrosion resistance of metals are getting higher and higher. At present, the use of rust inhibitors is still one of the most common and effective methods to prevent metal corrosion. With the enhancement of people's awareness of environmental protection and energy saving, the research on safe and environment-friendly water-based rust inhibitors has become a research hotspot in this field. [0003] Silicate is an environment-friendly corrosion inhibitor, which has the advantages of abundant resources, non-toxicity, low price and simple use. In recent years, there have been many studies on the surface treatment of galvanized steel, aluminum, alumin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/08C23C22/48
CPCC23C22/48C23C2222/20C23F11/08
Inventor 任树宁
Owner 山东硕力新材料科技有限公司
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