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A self-healing anti-corrosion coating for exhaust gas recovery pipeline

A technology of waste gas recovery and anti-corrosion coating, applied in anti-corrosion coatings, coatings, epoxy resin coatings, etc., can solve the problems of reducing maintenance costs and the lack of anti-corrosion durability of anti-corrosion coatings, so as to reduce maintenance costs and avoid the waste of repair agents. , cost saving effect

Active Publication Date: 2021-12-21
福建通海镍业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of lack of anticorrosion durability in the prior art anticorrosion coatings, the present invention discloses a self-repairing anticorrosion coating for waste gas recovery pipelines. The present invention introduces self-repairing slow-release balls to self-repair under trigger conditions The self-repairing agent is released in time in the slow-release ball to improve the repair of the base material of the anti-corrosion coating, greatly improving the service life and anti-corrosion effect of the anti-corrosion coating, and significantly reducing the maintenance cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] The preparation method of the self-healing slow-release ball comprises the following steps:

[0036] (1) Synthesis of hollow mesoporous SiO 2 : Add tetraethyl orthosilicate, hexadecyltrimethylammonium bromide, absolute ethanol and ultrapure water into the container, and place it in a constant temperature water bath with magnetic stirring at 35-38°C. After stirring evenly, add Ammonia water with a mass fraction of 25-28%, react at constant temperature for 22-24h; after the reaction, centrifuge to obtain SiO 2 , and then washed with ethanol, the SiO 2 Put it into the mixture of hydrochloric acid and absolute ethanol, stir at 80-85°C for 20-24h, and finally use pure water to dissolve the SiO 2 Wash, dry and set aside, take SiO 2 Disperse in absolute ethanol, add aminopropyltriethoxysilane of equimolar mass, stir and react for 1-1.2h, and prepare hollow mesoporous SiO with amino groups on the surface 2 ; The initial addition ratio of tetraethyl orthosilicate, cetyltrime...

Embodiment 1

[0041] A self-repairing anti-corrosion coating for exhaust gas recovery pipelines, the self-repairing anti-corrosion coating comprises the following raw materials in parts by weight: 58 parts of methylsiloxane modified epoxy resin latex solution, 8 parts of self-repairing slow-release balls parts, 5 parts of plasticizer Vaseline and 6 parts of filler high alumina aggregate. The concentration of the methylsiloxane-modified epoxy resin latex solution is 65wt%; the self-healing slow-release ball includes a copolymer-mesoporous SiO 2 Shell and supported on copolymer-mesoporous SiO 2 A self-healing agent in the shell; the self-healing agent is methyl silicone oil.

[0042] The preparation method of the self-healing slow-release ball comprises the following steps:

[0043] (1) Synthesis of hollow mesoporous SiO 2 : Add tetraethyl orthosilicate, cetyltrimethylammonium bromide, absolute ethanol and ultrapure water into the container, and place it in a constant temperature water bat...

Embodiment 2

[0048] A self-repairing anti-corrosion coating for exhaust gas recovery pipelines, the self-repairing anti-corrosion coating comprises the following raw materials in parts by weight: 54 parts of methylsiloxane modified epoxy resin emulsion solution, 6 parts of self-repairing slow-release ball 6 parts, 6 parts of plasticizer chlorinated paraffin and 8 parts of filler carborundum. The concentration of the methylsiloxane-modified epoxy resin latex solution is 60wt%; the self-healing slow-release ball includes a copolymer-mesoporous SiO 2 Shell and supported on copolymer-mesoporous SiO 2 A self-healing agent in the shell; the self-healing agent is methyl silicone oil.

[0049] The preparation method of the self-healing slow-release ball comprises the following steps:

[0050] (1) Synthesis of hollow mesoporous SiO 2 : Add tetraethyl orthosilicate, cetyltrimethylammonium bromide, absolute ethanol and ultrapure water into the container, and place it in a constant temperature wate...

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PUM

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Abstract

The present invention relates to the anticorrosion field of chemical structures. Aiming at the problem that the anticorrosion coatings in the prior art lack anticorrosion durability, a self-repairing anticorrosion coating for exhaust gas recovery pipelines is disclosed. The self-repairing anticorrosion coating includes the following parts by weight Composition of raw materials: 54-60 parts of methylsiloxane modified epoxy resin latex solution, 6-10 parts of self-repairing slow-release ball, 4-6 parts of plasticizer and 4-8 parts of filler; The concentration of the siloxane-modified epoxy resin latex solution is 60-70wt%; the self-healing slow-release balls include copolymer-mesoporous SiO 2 Shell and Support on Copolymer‑Mesoporous SiO 2 A self-healing agent within the shell. The invention introduces the self-repairing slow-release ball, and releases the self-repairing agent in the self-repairing slow-release ball in time under the trigger condition to improve the repair of the base material of the anti-corrosion coating, greatly improving the service life and anti-corrosion effect of the anti-corrosion coating , significantly reducing maintenance costs.

Description

technical field [0001] The invention relates to the field of anticorrosion of chemical structures, in particular to a self-repairing anticorrosion coating for waste gas recovery pipelines. Background technique [0002] In industry, when processing stainless steel pickling sludge and other raw materials to extract nickel-chromium alloys, a large amount of SO2 is produced. 2 , H + The flue gas with moisture will seriously corrode the pipes and equipment, and the dust removal system. Various methods are used to thicken the steel plate and use stainless steel. These phenomena will not only greatly increase maintenance costs, but also cause exhaust gas leakage, pollute the environment, and pose a threat to biological health. Since the flue gas discharged in the pipeline is the exhaust gas produced just after sintering, it has a high residual temperature, which requires the exhaust pipeline and the inner wall coating of the pipeline to have high corrosion resistance in addition ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D163/00C09D7/65B01J13/14
CPCC09D5/08C09D163/00C09D7/65C09D7/70B01J13/14C08L2203/18C08L2207/53C08L2205/035C08L77/04C08L83/04C08K7/26C08K5/053C08L91/06C08K5/12
Inventor 陈杰陈波马选坤周鹏张良生
Owner 福建通海镍业科技有限公司
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