Controlled release halloysite-loaded 2-mercaptobenzothiazole and phenyltriazole composite corrosion inhibitor and preparation method thereof

A technology of phenylpropyl triazole and composite corrosion inhibitor, which is applied in the field of corrosion inhibitor for seawater circulating cooling system and its preparation, can solve the problem of not paying too much attention to environmental pollution and the like, and achieve the effect of good corrosion inhibition effect

Inactive Publication Date: 2019-12-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The corrosion inhibitor technology in seawater medium has developed rapidly. In the early stage, efficient corrosion inhibitors such as chromate, dichromate, and sodium nitrite were usually used for the anticorrosion of carbon steel, but only from the perspective of high corrosion inhibition efficiency in this period , without paying too much attention to environmental pollution (Liu Xinhua, Yu Jingmin, Liang Yinghua, Research Progress of Green Corrosion Inhibitors in Seawater Medium, Material Protection, 2007, 40(4):41-46)

Method used

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  • Controlled release halloysite-loaded 2-mercaptobenzothiazole and phenyltriazole composite corrosion inhibitor and preparation method thereof
  • Controlled release halloysite-loaded 2-mercaptobenzothiazole and phenyltriazole composite corrosion inhibitor and preparation method thereof
  • Controlled release halloysite-loaded 2-mercaptobenzothiazole and phenyltriazole composite corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) MBT (2g) was dissolved in 100ml of absolute ethanol, and then HNTs (2g) was added thereto to form a suspension, called A suspension.

[0028] (2) Dissolve BTA (2g) in 100ml absolute ethanol, called B solution.

[0029] (3) Transfer the A suspension to a 100ml beaker, then place the beaker in a vacuum tank, and use a vacuum pump to evacuate to 1.325E3Pa, and maintain this pressure for 90min, then put the system back under normal pressure 90min is called the completion of a loading process.

[0030] (4) Repeat the above cycle process, centrifuge and wash the samples after two loadings and redisperse them in solution B to complete the third loading.

[0031] (5) After centrifuging and washing the sample loaded three times, redisperse it into a 0.10 mol / L copper sulfate solution and stir for 5 minutes, finally centrifuge, wash, dry at 60°C for 24 hours, and then grind to obtain HNTs Negative MBT and BTA composite corrosion inhibitor materials (Cu-BTA-MBT-HNTs).

Embodiment 2

[0033] (1) MBT (1 g) was dissolved in 100 ml of absolute ethanol, and then HNTs (5 g) was added thereto to form a suspension, called A suspension.

[0034] (2) Dissolve BTA (1 g) in 100 ml of absolute ethanol, called B solution.

[0035] (3) Transfer the A suspension to a 100ml beaker, then place the beaker in a vacuum tank, and use a vacuum pump to evacuate to 1.325E3Pa, and maintain this pressure for 60min, then put the system back under normal pressure 60min is called the completion of a loading process.

[0036] (4) Repeat the above cycle process, centrifuge and wash the samples after two loadings and redisperse them in solution B to complete the third loading.

[0037] (5) Centrifuge and wash the sample after 6 times of loading, redisperse it into 0.05mol / L copper sulfate solution and stir for 2min, finally centrifuge, wash, dry at 40°C for 24h, and then grind to obtain HNTs Loaded MBT and BTA composite corrosion inhibitor materials (Cu-BTA-MBT-HNTs).

Embodiment 3

[0039] (1) MBT (0.5 g) was dissolved in 100 ml of absolute ethanol, and then HNTs (10 g) was added thereto to form a suspension, called A suspension.

[0040] (2) Dissolve BTA (4g) in 100ml absolute ethanol, called B solution.

[0041] (3) Transfer the A suspension to a 100ml beaker, then place the beaker in a vacuum tank, and use a vacuum pump to evacuate to 1.325E3Pa, and maintain this pressure for 30min, then put the system back under normal pressure 30min is called the completion of a loading process.

[0042] (4) Repeat the above cycle process, centrifuge and wash the samples after two loadings and redisperse them in solution B to complete the third loading.

[0043] (5) Centrifuge and wash the sample after 9 times of loading, redisperse it into 0.20mol / L copper sulfate solution and stir for 10min, finally centrifuge, wash, dry at 80°C for 24h, and then grind to obtain HNTs Loaded MBT and BTA composite corrosion inhibitor materials (Cu-BTA-MBT-HNTs).

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Abstract

The invention discloses a controlled release halloysite-loaded 2-mercaptobenzothiazole and phenyltriazole composite corrosion inhibitor and a preparation method of the controlled release halloysite-loaded 2-mercaptobenzothiazole and phenyltriazole composite corrosion inhibitor. According to a nano container effect of halloysite and the synergistic effect of 2-mercaptobenzothiazole and phenyltriazole, the 2-mercaptobenzothiazole and the phenyltriazole are sequentially loaded into halloysite through a negative pressure method, and an insoluble Cu-BTA composite is formed at a port of the halloysite by the interaction of BTA and Cu ions on an orifice to control the release speed of the 2-mercaptobenzothiazole and the phenyltriazole. By means of the controlled release and composite corrosion inhibiting behaviors of the corrosion inhibitor, the corrosion resistance and service life of a seawater circulation cooling system are increased.

Description

technical field [0001] The invention relates to a corrosion inhibitor for a seawater circulating cooling system and a preparation method thereof, in particular to a preparation method of a composite corrosion inhibitor loaded with halloysite 2-mercaptobenzothiazole and benzotriazole. Background technique [0002] With the continuous development of society, the consumption of global fresh water resources has increased rapidly (6-7 times higher than that in the 20th century), and there has been a crisis of fresh water resources on a global scale. The total amount of fresh water resources in my country is relatively large (accounting for 6% of the world's total), but due to the large population, the per capita share is only 1 / 4 of the world's average level, and it is considered to be one of the countries most short of fresh water in the world. Seawater circulating cooling technology directly uses seawater instead of fresh water as the cooling medium, which is one of the importa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/10
CPCC23F11/10
Inventor 王吉会邢旭腾
Owner TIANJIN UNIV
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