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Glucoside ketone steel rust inhibitor and preparation method thereof

A technology of steel bar rust inhibitor and glucoside ketone, which is applied in the field of glucoside ketone steel bar rust inhibitor and its preparation, can solve problems such as cumbersome operation, and achieve the effects of simple preparation process, stable structure, and strong practicability

Active Publication Date: 2017-11-24
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many reports on the bonding of sugar and other molecules to build rust inhibitors. The earlier example is the rust inhibitor developed by Yang Huaiyu et al. 130; CN103880316A), which can resist the erosion of chloride ions by chemical adsorption on the surface of steel bars, and at the same time can enhance the stability and compactness of the surface passivation film, but the synthesis of this molecule requires a high temperature above 100 ° C and the addition of an acidic catalyst , need to add a strong base to neutralize in the later stage of the reaction, the operation is cumbersome

Method used

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  • Glucoside ketone steel rust inhibitor and preparation method thereof
  • Glucoside ketone steel rust inhibitor and preparation method thereof
  • Glucoside ketone steel rust inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 36g (0.2mol) of glucose into a round bottom flask, followed by adding 27g (0.25mol) of sodium carbonate, 100mL of water, and 21mL (0.2mol) of acetylacetone, and react at 90°C for 2 hours under magnetic stirring conditions, Cool to room temperature, remove the solvent by rotary evaporation, then dissolve in ethanol, filter to remove inorganic salts insoluble in ethanol, and remove ethanol to obtain glucoside ketone.

[0034] The glucoside ketone prepared by the above method is carried out infrared analysis, and the infrared spectrogram is as follows figure 1 The spectrum line 1 is shown in . 3332cm -1 is the O-H stretching vibration of the hydroxyl group of the sugar ring in glucoside ketone, 2921cm -1 is the saturated C-H stretching vibration in the glucoside ketone molecule, 1707cm -1 It is the stretching vibration of C=O in the glucoside ketone molecule, and is the characteristic peak of the glucoside ketone molecule. Combined with literature data (Journal...

Embodiment 2

[0037] (1) Add 36g (0.2mol) of glucose into a round bottom flask, followed by adding 100mL of water, 25g (0.3mol) of sodium bicarbonate, and 23mL (0.22mol) of acetylacetone, and react at 85°C for 15 hours under magnetic stirring conditions , cooled to room temperature, rotary evaporating to remove the solvent, redissolving in ethanol, filtering to remove inorganic salts insoluble in ethanol, and removing ethanol to obtain glucoside ketone.

[0038] (2) Dissolve 15 g of the prepared ketone glucoside in 70 g of tap water, add 15 g of ethanolamine, and stir until completely dissolved to obtain the ketone glucoside rust inhibitor S2 of the present invention.

[0039] The glucoside ketone prepared by step (1) is carried out infrared analysis, and the infrared spectrogram is as follows figure 1 Shown in the spectrum line 2 in, spectrum analysis is as embodiment 1.

Embodiment 3

[0041] (1) Add 36g (0.2mol) of glucose into a round bottom flask, followed by adding 100mL of water, 40g (0.4mol) of potassium bicarbonate, and 25mL (0.24mol) of acetylacetone, and react at 100°C for 8 hours under magnetic stirring conditions , cooled to room temperature, rotary evaporating to remove the solvent, redissolving in ethanol, filtering to remove inorganic salts insoluble in ethanol, and removing ethanol to obtain glucoside ketone.

[0042] (2) Dissolve 30 g of the prepared ketone glucoside in 60 g of tap water, add 10 g of N,N-dimethylethanolamine, and stir until completely dissolved to obtain the ketone glucoside rust inhibitor S3 of the present invention.

[0043] The glucoside ketone prepared by step (1) is carried out infrared analysis, and the infrared spectrogram is as follows figure 1 Shown in the spectrum line 3 in, spectrum analysis is as embodiment 1.

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Abstract

The invention provides a glucoside flavonereinforcing steel bar corrosion inhibitor and a preparation method thereof. The glucoside flavonereinforcing steel bar corrosion inhibitor is stable in structure, high in corrosion inhibiting efficiency, and meanwhile is simple in preparation method, easy for industrialization, friendly to environment, and low in production cost. The glucoside flavonereinforcing steel bar corrosion inhibitor is prepared by mixing the following components in percentage by weight: 15-30% of glucoside flavone with a specific structure, 5-15% of organic amine and the balance of water, wherein the organic amine is one or more of ethanolamine, diethanolamine, triethanolamine, N,N-dimethylethanolamine, N-methyldiethanolamine, diethylenetriamine, triethylene tetramine, tetraethylenepentamine, polyethylene polyamine, and polyethyleneimine.

Description

technical field [0001] The invention relates to a glycoside ketone steel bar rust inhibitor and a preparation method thereof, belonging to the technical field of organic steel bar rust inhibitors. Background technique [0002] Reinforced concrete is widely used in infrastructure construction, but the long life and high durability of concrete is still an unsolved problem. The main factor affecting the durability of concrete is the corrosion of steel bars. Corrosion of steel bars greatly shortens the service life of buildings and causes huge economic losses. At the same time, it also causes potential safety hazards in construction projects and seriously threatens the safety of people's lives and properties. The corrosion of steel bars involves a series of chemical and electrochemical reactions, carbonation of concrete and Cl - The infiltration of water is an important reason for the performance failure of reinforced concrete structures. Therefore, protecting steel bars and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B24/00C07D309/10C04B24/12C04B103/61
CPCC04B24/008C04B40/0039C04B2103/61C07D309/10C04B24/121C04B24/122C04B24/2652
Inventor 赵旦蔡景顺石亮姜骞陈翠翠刘建忠沙建芳穆松
Owner JIANGSU SOBUTE NEW MATERIALS
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