A kind of composite nanoparticle steel bar rust inhibitor and preparation method thereof

A technology of composite nanoparticles and steel bar rust inhibitor, applied in the field of steel bar corrosion protection, can solve problems such as weak effect, and achieve the effect of reducing spillage, excellent environmental performance, biocompatibility, and durability improvement

Active Publication Date: 2022-07-12
BOTE NEW MATERIALS TAIZHOU JIANGYAN CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to nanoparticles, patents CN107365098A and CN108178545A all use fly ash, silica fume and other powders to improve the compactness of concrete structures, and the effect is weaker than that of nanoparticles

Method used

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  • A kind of composite nanoparticle steel bar rust inhibitor and preparation method thereof
  • A kind of composite nanoparticle steel bar rust inhibitor and preparation method thereof
  • A kind of composite nanoparticle steel bar rust inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A composite nanoparticle rust inhibitor for steel bars, comprising: a mass fraction ratio of a rust inhibitor component, a nano compact component, a stabilizing component and a solvent component of 20:5:0.5:74.5;

[0036] The rust inhibitor component is prepared by mixing polyaspartic acid, sodium phosphate, calcium zincate, sodium ammonium octadecanoate and amino acid mixture in a mass ratio of 10:0.1:0.05:0.05:4.5;

[0037] The amino acid mixture is formed by mixing aspartic acid, aspartame, amino acid, proline, phenylalanine and other mass ratios;

[0038] The nano-dense component is nano-alumina dispersion, wherein the particle size of nano-alumina is 30nm, and the mass fraction is 20%;

[0039] The stabilizing component is composed of sorbitol ester and pentaerythritol ester, and its mass fraction ratio is 1:1;

[0040] The solvent component is water.

[0041] The preparation method of described steel bar rust inhibitor is as follows:

[0042] (1) Heat the water...

Embodiment 2

[0045]A composite nanoparticle rust inhibitor for steel bars, comprising: a mass fraction ratio of a rust inhibitor component, a nano compact component, a stabilizing component and a solvent component of 20:10:1:69;

[0046] The rust-inhibiting components are composed of polyaspartic acid, sodium monohydrogen phosphate, zinc nitrate, sodium zincate, serine, lysine, and arginine in mass ratio: 13.6:0.05:0.05:0.1:2:2 : 2 mixed;

[0047] The nano-compact component is a nano-silica dispersion, wherein the particle size of the nano-silica is 50 nm and the mass fraction is 25%;

[0048] The stabilizing component is a mixture of glycerol monostearate and laurate, and the mass fraction ratio is 2:1;

[0049] The solvent component is water;

[0050] The preparation method of described steel bar rust inhibitor is as follows:

[0051] (1) Heat the water to 45°C, add the stabilizing component while stirring and mix well for 0.5 hours, then add the rust inhibitor component, and stir at ...

Embodiment 3

[0054] A composite nanoparticle rust inhibitor for steel bars, comprising: a mass fraction ratio of a rust inhibitor component, a nano compact component, a stabilizing component and a solvent component of 30:5:0.5:64.5;

[0055] The rust inhibitor component is prepared by mixing polyaspartic acid, ammonium dihydrogen phosphate, zinc sulfate and amino acid mixture in a mass ratio of 20:0.25:0.25:9.5;

[0056] The amino acid mixture is prepared by mixing glycine, alanine, leucine, isoleucine and histidine in a mass fraction ratio of 1:1:1:1:1:1.

[0057] The nano-compact component is a nano-silica dispersion, wherein the particle size of the nano-silica is 50 nm and the mass fraction is 25%;

[0058] Described stabilizing component is glycerol monostearate;

[0059] The solvent component is water;

[0060] The preparation method of described steel bar rust inhibitor is as follows:

[0061] (1) Heat the solvent to 45°C, add the stabilizing component while stirring and mix well...

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Abstract

The invention discloses a composite nanoparticle rust inhibitor for steel bars and a preparation method thereof. The rust inhibitor for steel bars of the present invention is formed by mixing a rust inhibitor component, a nano-dense component, a stabilizing component and a solvent component; the rust inhibitor component is composed of polyaspartic acid, cathodic corrosion inhibitor and amino acid composition, the nano-dense component is selected from nano-titanium oxide dispersion, nano-silica dispersion and nano-alumina dispersion, and the stabilizing component is selected from sorbitol, glycerol monostearate, pentaerythritol and lauryl acid ester; the solvent component is water. The steel bar rust inhibitor of the present invention uses polyaspartic acid and a cathodic corrosion inhibitor to synergize with strong adsorption on the steel bar surface to protect the steel bar, adding nano-particles to compact the pores of the concrete, so as to ensure the long-term service of the rust inhibitor in the structure. The effective concentration can effectively delay the de-passivation time of concrete steel bars, reduce the corrosion rate of steel bars, and realize the improvement and guarantee of concrete durability.

Description

technical field [0001] The invention belongs to the technical field of steel bar corrosion protection, and particularly relates to a composite nanoparticle steel bar rust inhibitor and a preparation method thereof. Background technique [0002] The reinforced concrete interface is the most important factor affecting the durability of marine concrete and the key to the improvement of concrete performance. Various types of steel bar rust inhibitors have attracted the attention of domestic and foreign researchers and engineering technicians because of their good rust-inhibiting effect, convenient construction technology, and low economic cost. However, the complex cementation system, different types of steel bars, and the randomness of steel corrosion in marine engineering and saline soil areas have led to the variability of the microenvironment at the steel-concrete interface, and the rust inhibitor in the new structure has been dissolved. Risk, and put forward more stringent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/14C04B103/61
CPCC04B40/0039C04B2103/61C04B24/14C04B24/12C04B22/16C04B22/08C04B22/06C04B24/045C04B22/085C04B22/142
Inventor 周霄骋蔡景顺刘建忠马麒刘加平周莹谢德擎
Owner BOTE NEW MATERIALS TAIZHOU JIANGYAN CO LTD
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