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Preparation method of a carbon dioxide stimulus-responsive smart coating

A stimuli-responsive, carbon dioxide technology, used in anti-corrosion coatings, cellulose coatings, etc., to prevent safety accidents, high sensitivity, and reduce corrosion rates

Active Publication Date: 2021-02-26
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, coatings that respond to carbon dioxide stimuli have rarely been reported.
[0003] In the process of oil and gas field exploitation and oil and gas transportation, it is often accompanied by the corrosion of carbon dioxide. If the corrosion inspection of oil and casing is not timely, it may cause unexpected safety accidents due to pipeline perforation.

Method used

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  • Preparation method of a carbon dioxide stimulus-responsive smart coating
  • Preparation method of a carbon dioxide stimulus-responsive smart coating

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preparation example Construction

[0026] A method for preparing a carbon dioxide stimulus-responsive smart coating of the present invention comprises the following steps:

[0027] (1) Preparation of mesoporous silica: Dissolve 1.00g to 1.80g of surfactant in 480mL of deionized water, then add 3.0mL to 4.5mL of sodium hydroxide solution with a concentration of 2mol / L, stir well and heat up to 80 ℃; then add 4.00mL~6.00mL tetraethyl orthosilicate and continue to react for 2~4 hours, then centrifuge and dry, and remove the surfactant by calcination at 550℃ for 6 hours to obtain mesoporous silica;

[0028] The surfactant is cetyltrimethylammonium bromide or cetyltrimethylammonium chloride;

[0029] (2) Synthesis of vinylated mesoporous silica: 100 mg of mesoporous silica is ultrasonically dispersed in 10 mL of ethanol solution, and the moles of mesoporous silica and 3-(trimethoxysilyl) propyl acrylate Measure 3-(trimethoxysilyl)propyl acrylate at a ratio of 1:2 to 1:3.5, and react at room temperature for 24 hours...

Embodiment 1

[0038] A method for preparing an intelligent coating responsive to carbon dioxide stimulation, comprising the following steps:

[0039] (1) Synthesis of mesoporous silica: Dissolve 1.00g of cetyltrimethylammonium bromide in 480mL of deionized water, then add 3.5mL of 2mol / L sodium hydroxide solution, stir well and heat up to 80 ℃; add 5.00mL tetraethyl orthosilicate and react for 2 hours, then centrifuge and dry, and remove the surfactant—hexadecyltrimethylammonium bromide by calcination at 550°C for 6 hours to obtain mesoporous silica;

[0040] (2) Synthesis of vinylated mesoporous silica: 100 mg of mesoporous silica is ultrasonically dispersed in 10 mL of ethanol solution, and the moles of mesoporous silica and 3-(trimethoxysilyl) propyl acrylate Measure 3-(trimethoxysilyl)propyl acrylate at a ratio of 1:3 and react at room temperature for 24 hours to obtain modified mesoporous silica;

[0041](3)CO 2 Synthesis of stimuli-responsive nanocapsules: At room temperature, vinyl...

Embodiment 2

[0045] A method for preparing an intelligent coating responsive to carbon dioxide stimulation, comprising the following steps:

[0046] (1) Synthesis of mesoporous silica: Dissolve 1.20g of cetyltrimethylammonium bromide in 480mL of deionized water, then add 3.0mL of 2mol / L sodium hydroxide solution, stir well and heat up to 80 ℃; add 4.5.00mL tetraethyl orthosilicate and react for 2 hours, then centrifuge and dry, and remove the surfactant—hexadecyltrimethylammonium bromide by calcination at 550°C for 6 hours to obtain mesoporous silica;

[0047] (2) Synthesis of vinylated mesoporous silica: 100 mg of mesoporous silica is ultrasonically dispersed in 10 mL of ethanol solution, and the moles of mesoporous silica and 3-(trimethoxysilyl) propyl acrylate Measure 3-(trimethoxysilyl)propyl acrylate at room temperature for 24 hours at a ratio of 1:2.5 to obtain modified mesoporous silica;

[0048] (3)CO 2 Synthesis of stimuli-responsive nanocapsules: at room temperature, vinylated ...

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Abstract

The invention relates to a preparation method of an intelligent coating with carbon dioxide stimulation responsiveness, belongs to the technical field of composite preparation and provides the preparation method of the intelligent coating with carbon dioxide stimulation responsiveness to overcome the defects in the prior art. A corrosion inhibitor is supported by use of the characteristic of largepore volume of mesoporous silica, and a polymer shell with carbon dioxide stimulation responsiveness is polymerized on the surface of mesoporous silica with a distillation and precipitation polymerization method, so that controllable release of a functional nano container under stimulation of carbon dioxide is realized; the nano container with carbon dioxide stimulation responsiveness is added toa coating, and the intelligent coating with carbon dioxide stimulation responsiveness is prepared. When the prepared intelligent coating is corroded by carbon dioxide in an oil-gas field developmentprocess, corrosion inhibitor molecules in the nano container can be released automatically to repair the damaged coating, so that the corrosion rate of a pipeline is greatly reduced, and safety accidents can be prevented.

Description

technical field [0001] The invention relates to a preparation method of a carbon dioxide stimulus-responsive intelligent coating, which belongs to the technical field of composite material preparation. Background technique [0002] Mesoporous silica is the most common mesoporous material and is widely used in catalysts, drug release, adsorption and separation, and other fields. In recent years, in the field of anti-corrosion, mesoporous silica is often added to anti-corrosion coatings as nano-containers of small molecule corrosion inhibitors to obtain coatings with self-healing ability. By modifying the surface of mesoporous silica with functional polymers, smart coatings with light, heat, and pH response can be prepared. However, there are few reports on carbon dioxide stimulus-responsive coatings. [0003] In the process of oil and gas field exploitation and oil and gas transportation, it is often accompanied by the corrosion of carbon dioxide. If the corrosion inspectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D101/02C09D5/08
CPCC09D5/08C09D101/02C08K9/12C08K7/26C08K9/10
Inventor 唐鋆磊王吉星王莹莹王虎张海龙
Owner SOUTHWEST PETROLEUM UNIV
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