Water-based antirust agent and preparation method thereof

A water-based anti-rust agent and technology of anti-rust agent, applied in the field of metal anti-rust, can solve the problems of short anti-rust period, environmental pollution, poor anti-rust effect, etc.

Active Publication Date: 2016-03-30
河南索顿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, due to the increasing emphasis on environmental protection issues, traditional organic antirust agents are gradually being eliminated. In the prior art, there are water-based antirust agents with water as the base, but most of the water-based antirust agents have poor antirust effects. It can only be used for short-term rust prevention between processes; moreover, water-based rust inhibitors usually contain sodium nitrite which is a pollutant
[0007] For example, Chinese patent CN103409743A discloses a water-based metal antirust agent and a preparation method thereof. 40-45 parts, 10-15 parts of o-toluidine, 7-15 parts of sodium sulfate, 10-20 parts of sodium hydroxide, 10-15 parts of sodium silicate, and 40-50 parts of water. It can be known from its raw materials, It still contains a large amount of organic components, which will cause environmental pollution after volatilization into the air

Method used

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  • Water-based antirust agent and preparation method thereof
  • Water-based antirust agent and preparation method thereof
  • Water-based antirust agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Add 50mL of water, 0.1mL of triethanolamine, 0.05g of boric acid, 0.08g of ethylenediaminetetraacetic acid, and 0.40g of sodium tungstate to a 50mL sodium silicate solution (600g / L). Stir in a constant temperature water bath;

[0065] (2) Add 1 mL of tetraethyl orthosilicate to the preparation system, then add 0.1 g of sodium lauryl sulfate, and stir at constant temperature for 30 min.

[0066] The anti-rust time of the prepared sample was 35 hours, and the anti-corrosion time of copper sulfate was 135 s.

Embodiment 2

[0068] (1) Add 50mL of water, 0.1mL of diethanolamine, 0.08g of boric acid, 0.06g of ethylenediaminetetraacetic acid, and 40g of sodium tungstate to 50mL of sodium silicate solution (600g / L) in a beaker, at a constant temperature of 80°C stirring in a water bath;

[0069] (2) Add 2 mL of tetraethyl orthosilicate to the preparation system, then add 0.1 g of sodium dodecylsulfonate, and stir at constant temperature for 30 min.

[0070] The anti-rust time of the prepared sample was 36 hours, and the anti-corrosion time of copper sulfate was 220 s.

Embodiment 3

[0072] (1) Add 50mL water, 0.1mL triethylamine, 0.8g boric acid, 1.5g ethylenediaminetetraacetic acid, 0.8g sodium tungstate to 50mL sodium silicate solution (400g / L) Stirring in a constant temperature water bath;

[0073] (2) Add 3 mL of tetraethyl orthosilicate to the preparation system, then add 0.1 g of sodium lauryl sulfate, and stir at constant temperature for 30 min.

[0074] The anti-rust time of the prepared sample is 40h, and the anti-corrosion time of copper sulfate is 342s.

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Abstract

The invention discloses a water-based antirust agent and a preparation method thereof. The water-based antirust agent is prepared from silicate, organic alkali, boric acid and/or boric acid ester, a complexing agent, tungstate, orthosilicate ester and a surface active agent. The raw material source is wide, the preparation method is simple, the production cost is low, the rust-proof effect is good, and the effect duration is long.

Description

technical field [0001] The invention relates to the field of metal antirust, in particular to a water-based antirust agent and a preparation method thereof. Background technique [0002] Rust is the slow oxidation of oxygen and water with the surface metal, a mixture of metal oxides and hydroxides existing on the metal surface, which belongs to a kind of surface corrosion of metals, and the structure of rust is loose and porous, which can store more Oxygen and water vapor will accelerate the corrosion of the metal surface, which will not only reduce the appearance of the metal surface, but also reduce its mechanical properties, resulting in malfunction of the machine parts, or even scrapping due to failure of normal operation. [0003] Metal machinery will inevitably come into contact with oxygen, moisture and even corrosive media in the air during operation and storage. These substances will undergo electrochemical corrosion on the metal surface, which will make the rusting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/18C23F11/14
Inventor 陶栋梁
Owner 河南索顿新材料有限公司
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