Corrosion inhibitor for pickling of copper and alloys thereof and preparation method of corrosion inhibitor

A technology of alloy acid and corrosion inhibitor, which is applied in the field of corrosion inhibitor for copper and copper alloy pickling and its preparation, can solve the problems that are difficult to meet environmental protection, low toxicity and low cost, difficult to achieve the corrosion inhibition effect of pickling, difficult Solved organic matter instability and other problems, to achieve the effect of low cost, good corrosion inhibition effect, easy to operate

Inactive Publication Date: 2018-06-19
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, copper and its alloys have relatively serious anti-corrosion problems in the pickling process, especially in the pickling process of copper alloys, the zinc in the alloy will be dissolved before copper to promote the rapid dissolution of copper.
The usual aforementioned organic corrosion inhibitors o

Method used

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  • Corrosion inhibitor for pickling of copper and alloys thereof and preparation method of corrosion inhibitor
  • Corrosion inhibitor for pickling of copper and alloys thereof and preparation method of corrosion inhibitor

Examples

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Embodiment 1

[0028]A phenylhydrazone Schiff base is a corrosion inhibitor for pickling copper and its alloys, which is a core corrosion inhibitor component, and is composed of the following species by weight percentage (w%): acetophenone and 2-hydroxyl-1-naphthaldehyde condensate 2.0% of phenylhydrazone derivatives, 2.5% of citric acid, 0.5% of fatty alcohol polyoxyethylene ether sodium sulfate (AES), and 95.0% of water.

[0029] This phenylhydrazone Schiff base is the preparation method of corrosion inhibitor for copper and its alloy pickling with the core corrosion inhibition component as follows: at room temperature, take 25g of citric acid according to the above ratio and add it to a mixing tank, stirring tank or tank, and then add 250g water, stirred to make it completely dissolved, then weighed 20 g of phenylhydrazone derivatives of acetophenone and 2-hydroxyl-1-naphthaldehyde condensate and added to the above-mentioned aqueous solution of citric acid, and finally added 5 g of AES and...

Embodiment 2

[0032] A phenylhydrazone Schiff base is a corrosion inhibitor for pickling copper and its alloys, which is a core corrosion inhibitor component, and is composed of the following species by weight percentage (w%): acetophenone and 2-hydroxyl-1-naphthaldehyde condensate 3.0% of phenylhydrazone derivatives, 1.5% of acetic acid, 0.5% of sodium lauryl sulfate (K12), and 95.0% of water.

[0033] The phenylhydrazone Schiff base is the preparation method of copper and its alloy pickling corrosion inhibitor of the core corrosion inhibition component as follows: at room temperature, take by weighing 15g acetic acid according to the above ratio and add it to a mixing kettle, a stirring tank or a tank, add 200g water, Stir and miscible, then weigh 30g of the phenylhydrazone derivative of the condensate of acetophenone and 2-hydroxy-1-naphthaldehyde and add it to the above-mentioned aqueous solution of acetic acid, then add 5g of sodium lauryl sulfate (K12) and the remaining Water 750g, st...

Embodiment 3

[0036] A phenylhydrazone Schiff base is a corrosion inhibitor for pickling copper and its alloys, which is a core corrosion inhibitor component, and is composed of the following species by weight percentage (w%): acetophenone and 2-hydroxyl-1-naphthaldehyde condensate 3.2% of phenylhydrazone derivatives, 5.0% of ethanol, 0.8% of fatty alcohol polyoxyethylene ether sodium sulfate (AES), and 91.0% of water.

[0037] The phenylhydrazone Schiff base is the preparation method of the copper and its alloy pickling corrosion inhibitor of the core corrosion inhibition component as follows: at room temperature, take 50g of ethanol according to the above ratio and add it to a mixing tank, stirring tank or tank, add 300g of water, Stir to dissolve it completely, then weigh 32Kg of the phenylhydrazone derivative of the condensate of acetophenone and 2-hydroxy-1-naphthaldehyde, add it to the above aqueous solution of citric acid, then add 8g of AES and the remaining water 610g, and stir even...

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Abstract

The invention discloses a corrosion inhibitor for pickling of copper and alloys thereof and a preparation method of the corrosion inhibitor and belongs to the corrosion protection technologies of chemical cleaning processes of metals. The corrosion inhibitor is prepared by the following steps: taking phenylhydrazone derivatives of acetophenone and 2-hydroxy-1-naphthaldehyde condensation compoundsas core corrosion inhibition components, and compounding with ethanol or organic acids and surfactants to prepare an aqueous solution, so as to obtain the product. The corrosion inhibitor for pickling, disclosed by the invention, is simple in formula, simple and convenient in preparation and safe in operation and is a low-toxicity and high-efficiency environmental-friendly corrosion inhibitor.

Description

technical field [0001] The invention relates to a corrosion inhibitor for pickling copper and copper alloys and a preparation method thereof, belonging to the technical field of corrosion inhibition in metal chemical cleaning processes. Background technique [0002] Metal corrosion not only easily leads to a large loss of metal materials, shortens the service life of mechanical equipment, and safety hazards of transportation vehicles, causing great economic losses, but also may bring heavy metal pollution to the ecological environment. The environment where metal is in contact with aqueous solution is the most likely to cause metal corrosion. In order to solve the anti-corrosion problem of metals, human beings have made unremitting efforts, and developing various corrosion inhibitors for different environmental conditions is the most effective way of metal anti-corrosion. In the chemical cleaning process, it is often achieved by adding corrosion inhibitors to reduce metal c...

Claims

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Application Information

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IPC IPC(8): C23G1/10C23G1/06
CPCC23G1/103C23G1/068
Inventor 钱永徐国阳
Owner SUZHOU UNIV OF SCI & TECH
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