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Plant type gas-phase copper corrosion inhibitor and preparation method thereof

A copper corrosion inhibitor, plant-based technology, applied in the field of plant-type gas-phase copper corrosion inhibitor and its preparation, can solve the problems of high toxicity, complex process of gas-phase copper corrosion inhibitor, difficult degradation, etc., achieve aromatic smell, increase corrosion resistance Corrosion effect and stability, the effect of simple preparation method

Inactive Publication Date: 2015-12-30
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a plant-type gas-phase corrosion inhibitor, the purpose of which is to extract volatile gas-phase copper corrosion inhibitors from natural and safe raw materials, thereby solving the problem of existing gas-phase copper corrosion inhibitors. The technical problems of complex agent process, high toxicity and difficult degradation

Method used

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  • Plant type gas-phase copper corrosion inhibitor and preparation method thereof
  • Plant type gas-phase copper corrosion inhibitor and preparation method thereof
  • Plant type gas-phase copper corrosion inhibitor and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0027] The preparation method of vapor phase copper corrosion inhibitor provided by the invention comprises the following steps:

[0028] (1) crush the garlic, and ultrasonically mix it with an appropriate amount of medical alcohol, preferably in a weight ratio of 1:1; carry out solid-liquid separation and retain the liquid to obtain the garlic extract;

[0029] (2) Grind the fragrant leaves, and ultrasonically mix them with an appropriate amount of medical alcohol, preferably in a weight ratio of 1:5; carry out solid-liquid separation and retain the liquid to obtain the fragrant leaf extract;

[0030] (3) The garlic extract prepared in step (1) and the bay leaf extract prepared in step (2) were mixed according to a weight ratio of 3:1 to prepare the plant-type vapor phase copper corrosion inhibitor.

[0031] The volatile organic compounds in the garlic extract are identified by headspace mass spectrometry, and contain 30%-50% dipropenyl trisulfide, 10%-30% dipropenyl disulfid...

Embodiment 1

[0042] A plant-type vapor-phase copper corrosion inhibitor is obtained by compounding 75% of garlic extract and 25% of bay leaf extract according to weight percentage.

[0043] The plant-type gas-phase copper corrosion inhibitor is prepared as follows: according to the weight ratio, 1 part of garlic is mashed and evenly mixed with 1 part of 75% ethanol solution, and filtered after ultrasonic extraction to obtain milky yellow garlic extract; according to the weight ratio, the 1 part of bay leaf is cut into pieces and mixed evenly with 5 parts of 75% ethanol solution, filtered after ultrasonic extraction to obtain green bay leaf extract; the plant-type gas-phase copper corrosion inhibitor combines 75% of garlic extract with 25% of Prepared by uniformly mixing the bay leaf extract.

[0044] The main components and weight content of its volatile matter: 16.56% dipropenyl trisulfide, 7.43% dipropenyl disulfide, 7.24% 1-oxo-4,6-diazacyclooctane-5-thione, 31.61% eucalyptol, 15.3% L-...

Embodiment 2

[0050] The copper sheet added with the plant-type vapor-phase copper corrosion inhibitor in Example 1 and Comparative Examples 1 and 2 was subjected to atmospheric corrosion measurement.

[0051] According to the method in Comparative Example 3, the plant-type vapor-phase copper corrosion inhibitors described in Example 1 and Comparative Examples 1 and 2 were respectively placed in the covered vessel described in Comparative Example 3, and the airtight container was first dried at 35°C Middle pre-filming 24h, after pre-filming, other conditions are consistent with comparative example 3. Two days later, the atmospheric corrosion of the copper sheet was measured, and the results are shown in Table 1.

[0052] As can be seen from Table 1, the plant-type vapor-phase copper corrosion inhibitor described in Example 1 and Comparative Examples 1 and 2 all has a good corrosion inhibition effect, and the plant-type vapor-phase copper corrosion inhibitor described in Comparative Example ...

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Abstract

The invention discloses a plant type gas-phase copper corrosion inhibitor and a preparation method thereof. The corrosion inhibitor comprises volatiles containing 5 wt%-20 wt% of diallyl trissulfide, 2 wt%-10 wt% of diallyl disulfide, 2 wt%-10 wt% of 1-oxo-4,6-diazacyclooctane-5-thioketone and 30 wt%-50 wt% of eucalyptol. The corrosion inhibitor is a mixture formed by compounding a garlic extract liquid and a bay leaf extract liquid according to the weight ratio of 3:1. The plant type gas-phase copper corrosion inhibitor provided by the invention is obvious in corrosion inhibition effect, simple in preparation method, safe, non-toxic, and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of anti-corrosion technology, and more specifically relates to a plant-type gas-phase copper corrosion inhibitor and a preparation method thereof. Background technique [0002] Copper has the characteristics of excellent strength and electrical conductivity, good machinability and weldability, and has been widely used in various fields such as industry, military and civil use for a long time. However, when copper is used in the open air, due to the presence of oxygen, water vapor, and a small amount of chloride ions in the atmosphere, it is often susceptible to atmospheric corrosion, which affects its use and life, causing huge economic losses. According to statistics, the loss of copper caused by atmospheric corrosion accounts for more than half of all corrosion types in my country every year. [0003] Atmospheric corrosion can be controlled in many ways, such as using metal coatings, using alloys instead or using v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/02
Inventor 陈振宇曹亚敏郭兴蓬
Owner HUAZHONG UNIV OF SCI & TECH
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