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Supermolecule corrosion inhibitor for copper and copper alloy and superfine grinding preparation method thereof

A corrosion inhibitor and supramolecular technology, which is applied in the field of copper and its alloy corrosion inhibitor and its ultra-fine grinding preparation, can solve the problems of copper and its alloy corrosion and poor anti-corrosion measures, and achieve a small amount of use , Excellent anti-corrosion effect, good dispersion effect

Inactive Publication Date: 2014-02-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem that the industrial condensed water and cooling water corrode copper and its alloys, and the anti-corrosion measures adopted at present are not effective, the present invention provides a supramolecular corrosion inhibitor for copper and its alloys and its supermolecular corrosion inhibitor. Fine Grinding Preparation Method

Method used

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  • Supermolecule corrosion inhibitor for copper and copper alloy and superfine grinding preparation method thereof
  • Supermolecule corrosion inhibitor for copper and copper alloy and superfine grinding preparation method thereof
  • Supermolecule corrosion inhibitor for copper and copper alloy and superfine grinding preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] Mix 5g of methyl-β-cyclodextrin and 1ml of water into a paste and transfer it into a dispersing sand mill and mix evenly at a grinding speed of 600r / min; then add 1.2g of benzothiazole to the dispersing sand mill, Continue to grind at a grinding rate of 600r / min for 30min; then slowly add 2.5mL of ethylene glycol dropwise, adjust the grinding rate to 2000r / min, and continue grinding for 40min; finally, vacuum dry and remove water at 80°C to obtain copper and its A supramolecular corrosion inhibitor for alloys, the corrosion inhibitor is a combination of methyl-β-cyclodextrin with hydrophobic cavity and benzothiazole induced by ethylene glycol and combined with weak interactions between molecules. Inclusion compound of molecular structure. The application effect is shown in Table 1.

Embodiment 2

[0024] Mix 10g of hydroxypropyl-β-cyclodextrin and 5ml of water into a paste, then transfer it into a dispersing sand mill and mix evenly at a grinding speed of 800r / min; then add 2.5g of benzotri For nitrogen azole, continue to grind at a grinding rate of 800r / min for 15min; then slowly add 3mL of cyclohexanol dropwise, adjust the grinding rate to 4000r / min, and continue grinding for 45min; finally, vacuum dry and remove water at 70°C to obtain copper Supramolecular corrosion inhibitor and its alloy, the corrosion inhibitor is a combination of hydroxypropyl-β-cyclodextrin with a hydrophobic cavity and benzotriazole induced by cyclohexanol and through weak intermolecular interactions And the formation of clathrates with supramolecular structure. The application effect is shown in Table 1.

Embodiment 3

[0026] Mix 10g of carboxymethyl-β-cyclodextrin and 6ml of water into a paste, transfer it to a dispersing sand mill and mix evenly at a grinding speed of 1000r / min; then add 4.2g of 2-mercaptobenzene to the dispersing sand mill And thiazole, continue to grind at a grinding rate of 1000r / min for 25min; then slowly add 2mL of dicyclohexylamine dropwise, adjust the grinding rate to 5000r / min, and continue grinding for 30min; finally, vacuum dry and remove water at 80°C to obtain Supramolecular corrosion inhibitor for copper and its alloys, the corrosion inhibitor is carboxymethyl-β-cyclodextrin with hydrophobic cavity and 2-mercaptobenzothiazole induced by dicyclohexylamine and passed through the weak intermolecular Inclusion complex with supramolecular structure formed by interaction and combination. The application effect is shown in Table 1.

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Abstract

The invention discloses a corrosion inhibitor with a supermolecule structure for copper and copper alloy and a superfine grinding preparation method of the corrosion inhibitor, and belongs to the technical field of metal corrosion and protection. The supermolecule corrosion inhibitor comprises 30-70 parts by weight of cyclodextrin derivatives, 10-50 parts by weight of organic azole compound, 5-20 parts by weight of inductive agent and 6-60 parts by weight of water. The supermolecule corrosion inhibitor for the copper and the copper alloy has the advantages that the solubility and dispersity of the organic azole compound in water are improved by using a subject and object supermolecule structure formed by using the organic azole compound and the cyclodextrin derivatives through the hydrophobic effect and the weak interaction of hydrogen bonds and the like. The supermolecule corrosion inhibitor for the copper and the copper alloy has strong universality and an excellent anti-corrosion effect; the using amount of the supermolecule corrosion inhibitor is small; when the dosing concentration of the supermolecule corrosion inhibitor is 20-50mg / L, the corrosion inhibition efficiency of the copper and the copper alloy in a condensed water and cooling water system can reach above 90%; effective components in the supermolecule corrosion inhibitor are uniformly released; the long-period operation is carried out only by one-times addition of the corrosion inhibitor.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and protection, and in particular relates to a corrosion inhibitor for copper and its alloys with a supramolecular structure and a preparation method for ultrafine grinding thereof. Background technique [0002] Condensed water is formed by the condensation of steam after doing work in the industrial production process. Theoretically, the condensed water should be pure water with very little impurity content; however, in the actual production process, the supposedly pure condensed water is very vulnerable to the decomposition of bicarbonate in boiler feed water, intermittent steam supply and Outside O 2 and CO 2 The effect of dissolution. According to the actual measurement, the condensed water is acidic (5.5<pH<6.5). Acidic condensed water with a certain temperature will cause serious corrosion to the pipelines transporting it, and metal ions will dissolve in the condensed water...

Claims

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Application Information

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IPC IPC(8): C23F11/14
Inventor 魏刚樊保民乔宁魏云鹏金广见张占佳
Owner BEIJING UNIV OF CHEM TECH
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