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Reinforced concrete corrosion inhibitor and preparation and application thereof

A technology of reinforced concrete and rust inhibitor, applied in the field of rust inhibitor, can solve the problems of insufficient structural design resistance, insufficient structural durability, failure, etc.

Inactive Publication Date: 2018-10-26
宁波蒙曼生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these are caused by insufficient structural design resistance, some are caused by unfavorable changes in service loads, but more are caused by failures caused by insufficient durability of structures.

Method used

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  • Reinforced concrete corrosion inhibitor and preparation and application thereof
  • Reinforced concrete corrosion inhibitor and preparation and application thereof
  • Reinforced concrete corrosion inhibitor and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of embodiment 1 reinforced concrete rust inhibitor

[0028] Composition of raw materials: 30 parts of Schiff base-aluminum chelate, 20 parts of tetrakis [β-(3,5-tertiary butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and didodecyl alcohol ester, compound Amino acid (lysine and glycine, mass ratio is 2:1) 20 parts, dialkyl sulfate ester quaternary ammonium salt cationic surfactant 10 parts and water 50 parts;

[0029] Preparation:

[0030] S1. Synthesis of Schiff base ligands: Dissolve 1 mol of o-diamine compound and 0.1 mol of sodium hydroxide in acetonitrile, add 1.8 mol of salicylaldehyde, heat and reflux for 5 hours to produce a white solid, continue to reflux for 1 hour Cool to room temperature, filter, and wash the solid repeatedly with ethanol to obtain the Schiff base ligand, the structural formula is:

[0031]

[0032] S2. Synthesis of Schiff base-aluminum chelate: Dissolve the Schiff base ligand in ethanol solution, add AlCl 3 , ...

Embodiment 2

[0038] The preparation of embodiment 2 reinforced concrete rust inhibitor

[0039] Raw material composition: 50 parts of Schiff base-aluminum chelate, 20 parts of trioctyl ester, 20 parts of tridecyl ester, 40 parts of compound amino acid (methionine and glycine, mass ratio 1:1), halogenated hydrocarbon quaternary ammonium salt cation 20 parts of surfactant and 60 parts of water;

[0040] Preparation:

[0041] S1. Synthesis of Schiff base ligands: Dissolve 1 mol of o-diamine compound and 0.1 sodium hydroxide in dichloromethane, add 2 mol of salicylaldehyde, heat and reflux for 7 hours to produce a white solid, continue to reflux for 1 hour Cool to room temperature, filter, and wash the solid repeatedly with ethanol to obtain the Schiff base ligand;

[0042] S2. Synthesis of Schiff base-aluminum chelate: Dissolve the Schiff base ligand in ethanol solution, add AlCl 3 , react at 70°C for 24h, cool and filter, and wash the solid repeatedly with ethanol to obtain a Schiff base-...

Embodiment 3

[0044] The preparation of embodiment 3 reinforced concrete rust inhibitor

[0045] Composition of raw materials: 40 parts of Schiff base-aluminum chelate, 30 parts of 2,6-tertiary butyl-4-methylphenol, compound amino acids (diglycine, triglycine and tyrosine, the mass ratio is 1:1 : 1) 30 parts, 15 parts of alkylene oxide quaternary ammonium salt cationic surfactants and 55 parts of water;

[0046] Preparation:

[0047] S1. Synthesis of Schiff base ligand: Dissolve 1 mol of o-diamine compound and 0.1 sodium hydroxide in methanol, add 2.2 mol to replace salicylaldehyde, heat and reflux for 6 hours to produce a white solid, continue to reflux for 1 hour and then cool to room temperature, filtered, and the solid was repeatedly washed with ethanol to obtain the Schiff base ligand;

[0048] S2. Synthesis of Schiff base-aluminum chelate: Dissolve the Schiff base ligand in ethanol solution, add AlCl 3 , react at 60°C for 18h, cool and filter, and wash the solid repeatedly with eth...

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Abstract

The invention provides a reinforced concrete corrosion inhibitor and a preparation method and application thereof. The reinforced concrete corrosion inhibitor is prepared from the following raw materials in parts by weight: 30-50 parts of Schiff base-aluminium chelate compound, 20-40 parts of an antioxidant, 20-40 parts of compound amino acid, 10-20 parts of a surfactant and 50-60 parts of water.The prepared reinforced concrete corrosion inhibitor can release Al<3+> under the alkaline seawater condition, a layer of compact oxide layer is generated on the surface of Fe , and under the synergistic effect of the compound amino acid, the antioxidant and the surfactant, rebars can be effectively protected from being eroded by seawater.

Description

technical field [0001] The invention relates to the field of rust inhibitors, in particular to a reinforced concrete rust inhibitor. Background technique [0002] Since the advent of Portland cement in the 1920s, concrete materials have been used for more than 100 years. Due to its many advantages such as high structural rigidity, easy construction, low engineering cost, and low maintenance costs in the later period, it has become a civil engineering structure. The material of choice in design, China's cement production alone reached 2.3 billion tons in 2015. In fact, during the more than 100 years since concrete was used in civil engineering, a large number of reinforced concrete structures failed prematurely due to various reasons, failing to reach the scheduled service life. Some of these are caused by insufficient structural design resistance, some are caused by adverse changes in service loads, but more are caused by failures caused by insufficient durability of the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/40C04B103/61
CPCC04B40/0039C04B2103/61C04B24/40C04B24/045C04B24/123C04B22/002C04B2103/404C04B24/02
Inventor 徐坤
Owner 宁波蒙曼生物科技有限公司
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