Aminoketose organic steel bar corrosion inhibitor and preparation method thereof

A kind of steel bar rust inhibitor and amino ketone technology, applied in the field of building materials, can solve the problems of cumbersome post-processing, high application cost, accelerated dissolution of passivation film, etc., to avoid environmental pollution and ecological damage, excellent rust inhibition performance, synthetic simple method effect

A kind of steel bar rust inhibitor and amino ketone technology, applied in the field of building materials, can solve the problems of cumbersome post-processing, high application cost, accelerated dissolution of passivation film, etc., to avoid environmental pollution and ecological damage, excellent rust inhibition performance, synthetic simple method effect

CN106366139AInactive Publication Date: 2017-02-01JIANGSU SOBUTE NEW MATERIALS
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  • Aminoketose organic steel bar corrosion inhibitor and preparation method thereof
  • Aminoketose organic steel bar corrosion inhibitor and preparation method thereof
  • Aminoketose organic steel bar corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Glucose (0.2mol, 36g) was added to a round-bottomed flask, followed by 7mL of water, n-butylamine (0.22mol, 16g) and acetic acid (0.002mol, 0.12g), reacted at 80°C for 4 hours under mechanical stirring, and cooled to room temperature, add 340mL of water to dilute to obtain the aminoketose organic steel rust inhibitor.

Embodiment 2

[0031] Glucose (0.2mol, 36g) was added to a round-bottomed flask, followed by 7mL of water, p-methylaniline (0.21mol, 23g) and acetic acid (0.004mol, 0.24g), and reacted at 95°C for 2 hours under mechanical stirring. Cool to room temperature, add 380mL of water to dilute to obtain the aminoketose organic steel rust inhibitor.

Embodiment 3

[0033] Galactose (0.2mol, 36g) was added to a round bottom flask, followed by 7mL of water, N,N-dimethyl-1,3-propanediamine (0.24mol, 25g) and acetic acid (0.004mol, 0.24g ), reacted at 90° C. for 3 hours under mechanical stirring, cooled to room temperature, and diluted with 390 mL of water to obtain the aminoketose organic steel rust inhibitor.

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Abstract

The invention discloses an aminoketose organic steel bar corrosion inhibitor. The aminoketose organic steel bar corrosion inhibitor is prepared by carrying out Amadori rearrangement reaction on aldoses and amines. The aldoses comprise glucose, galactose and mannitose, and have the advantages of wide sources and environment friendliness; and the amines are disclosed in the specification, wherein R1 and R2 are independently selected from C1-C15 straight-chain, branched-chain, cyclic alkyl, aralkyl, aryl, alkenyl, ether alkyl, amino alkyl, alkyl alcohol, alkylamine, alkyl carboxylic acid or hydrogen atom; R1 and R2 can form a ring; and R1 and R2 can not be the hydrogen atom at the same time. The synthesis technique is simple. The prepared corrosion inhibitor has the characteristics of high corrosion inhibition efficiency and environment friendliness, and has obvious application value and broad market prospects.

Description

technical field [0001] The invention relates to an aminoketose sugar organic steel bar rust inhibitor and a preparation method thereof, belonging to the field of building materials. [0002] technical background [0003] Reinforced concrete is currently the most widely used building material. Among the many factors affecting the durability of concrete, steel corrosion is the primary cause of structural deterioration and failure. Under normal circumstances, the strong alkaline environment formed by the hydration of cement forms a dense passivation film on the surface of the steel bars embedded in it, and there will be no corrosion. However, as the service time of the concrete structure increases, the internal alkalinity becomes lower. At the same time, under the combined action of chloride ion infiltration, water and oxygen, the passivation film is gradually destroyed, and the corrosion degree is gradually intensified. Due to the volume expansion of the generated rust, common...

Claims

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Application Information

Patent Timeline
01 Feb 2017
Publication
CN106366139A
IPC
C07H7/02; C07H7/06; C07H1/00; C04B24/12
CPC
C07H7/02; C04B24/12; C04B24/121; C04B24/122; C04B24/123; C04B2103/61; C07H1/00; C07H7/06
Inventors
赵旦; 蔡景顺