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Migrating rust inhibitor

A rust inhibitor and migration type technology, applied in the field of migration type rust inhibitor, can solve the problems of weak migration ability and poor rust inhibition effect, and achieve the effect of strong migration ability, good rust inhibition effect and reduction of engineering cost.

Active Publication Date: 2015-05-13
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The migratory rust inhibitor is composed of various amines, aminoacids and their salts. This kind of rust inhibitor diffuses in the pores of the concrete to form an adsorption film on the surface of the steel bar through the gas phase and liquid phase. Therefore, it produces anti-rust effect, environmental protection, high efficiency, and does not affect the performance of steel bars. It can be directly brushed on the concrete surface by diffusion to prevent steel bar corrosion or repair corroded steel bars; currently, migratory rust inhibitors are mainly made of aromatic aniline It is compounded with other auxiliary components such as organic matter and acid, for example, as the publication number CN101407385, the invention patent titled "An Alkali-Free Non-Nitrite Concrete Reinforcement Rust Inhibitor", which is made of zinc gluconate 3-10% , lithium silicate 20-40%, ammonium benzoate 10-20%, low molecular weight (alcohol) amines 15-25% and water 20-40%. The rust component is compounded with other auxiliary components, but the anti-rust effect of aromatic aniline substances is poor, and the migration ability is weak

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] A migration type rust inhibitor is made of the following components by weight: 80 parts of rust inhibitor, 20 parts of polycarboxylic acid water reducer (fixed solid), 15 parts of sodium gluconate, 0.5 parts of air-entraining agent, 600 parts of water; wherein the rust-inhibiting component is:

[0019]

[0020] The preparation method of the present invention is as follows:

[0021] Polyethylenediamine with a degree of polymerization of 3 and (meth)acrylic acid were esterified according to a mass ratio of 1:1.05 to prepare the above-mentioned rust-inhibiting component, which was combined with (methyl) in a mass ratio of 1:3. ) Acrylic acid is mixed, and 0.02 free radical initiator ammonium persulfate is added into it to perform polymerization reaction at a temperature of 80° C. to prepare the migration type rust inhibitor of the present invention.

Embodiment 2

[0023] A migration type rust inhibitor is made of the following components by weight: 150 parts of rust inhibitor, 25 parts of polycarboxylic acid water reducer (fixed solid), 40 parts of sodium gluconate, 1 part of air-entraining agent, 800 parts of water; wherein the rust-inhibiting component is:

[0024]

Embodiment 3

[0026] A migration type rust inhibitor is made of the following components by weight: 100 parts of rust inhibitor, 20 parts of naphthalene water reducer (fixed solid), 20 parts of sodium citrate, 0.5 parts of air-entraining agent, and 575 parts of water Parts; wherein, the rust-inhibiting component is:

[0027]

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PUM

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Abstract

The invention relates to a migrating rust inhibitor, which is made of the following components by weight: 50-150 parts of a rust-inhibiting component, 15-30 parts of a water reducing agent, 5-45 parts of a coagulation retarding component, 0.5-3 parts of an air entraining component, and 200-800 parts of water. The migrating rust inhibitor provided by the invention adopts an amino acid rust-inhibiting molecule with a high steric hindrance structure as the rust-inhibiting component, thus having good rust-inhibiting effect and strong migration ability.

Description

Technical field [0001] The invention relates to a migration type rust inhibitor, in particular to a migration type rust inhibitor prepared from organic polymers. Background technique [0002] The migration type rust inhibitor is composed of various amines, aminoacids and their salts. This type of rust inhibitor is in the pores of the concrete and diffuses through the gas and liquid phases to the surface of the steel bar to form an adsorption film. Thereby, it produces rust resistance, environmental protection, high efficiency, and does not affect the performance of steel bars. It can be directly brushed on the surface of concrete through diffusion to prevent corrosion of steel bars or repair corroded steel bars; currently the migration type rust inhibitor is mainly composed of aromatic aniline It is compounded with other auxiliary components such as acid and other auxiliary components. For example, the publication number CN101407385, the invention patent named "an alkali-free non...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B103/61
Inventor 王二坡王秋玲李震李寅雪贺奎王万金徐丽
Owner STATE GRID CORP OF CHINA
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