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A kind of anti-corrosion coating for reinforced concrete, preparation method and application

A technology for reinforced concrete and anti-corrosion coatings, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problem of affecting the safety and long-term stability of reinforced concrete infrastructure, incapable of isolating sulfate and chloride ions, and weakening mechanical properties. and other problems, to achieve the effects of strong climate adaptability, lasting and effective isolation, and good mechanical properties

Active Publication Date: 2020-05-08
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The coatings formed by the existing anti-corrosion coatings have problems such as easy infiltration, creep, and poor adhesion, and cannot effectively isolate sulfate radicals and chloride ions. Sulfate radicals and chloride ions will enter the interior of reinforced concrete and destroy its structure. Weaken its mechanical properties and affect the safety and long-term stability of reinforced concrete foundation structures

Method used

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  • A kind of anti-corrosion coating for reinforced concrete, preparation method and application
  • A kind of anti-corrosion coating for reinforced concrete, preparation method and application
  • A kind of anti-corrosion coating for reinforced concrete, preparation method and application

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preparation example Construction

[0053] In a second aspect, embodiments of the present invention provide a method for preparing an anticorrosive coating for reinforced concrete according to the first aspect of the embodiments of the present invention, which specifically includes the following steps:

[0054] Step 1: Add ethylene glycol diglycidyl ether and butanol to the novolak epoxy resin, stir and mix evenly to obtain a resin dilution.

[0055] Step 2, mixing the resin diluent, mica flakes, xylene-type unsaturated polyester resin and ultrafine silicon dioxide, and stirring evenly to obtain a paste.

[0056] Step 3, mix the modified amine epoxy resin curing agent, toluene-2,6-diisocyanate and / or modified toluene-2,6-diisocyanate with the paste obtained in step 2 and stir evenly to obtain the anti-corrosion coating.

[0057] Further, in the embodiment of the present invention, toluene-2,6-diisocyanate is liquid at normal temperature, in order to facilitate the mixing of toluene-2,6-diisocyanate and other co...

Embodiment 1

[0062] The present embodiment provides a kind of anticorrosion coating for reinforced concrete, comprises following component:

[0063] F-53 type novolak epoxy resin, 2.0kg;

[0064] Ethylene glycol diglycidyl ether, 1.0kg;

[0065] Butanol, 1.0kg;

[0066] X41 type xylene type unsaturated polyester resin, 0.4kg;

[0067] GY-051 modified amine epoxy resin curing agent, 1.8kg;

[0068] Toluene-2,6-diisocyanate, 0.2kg;

[0069] Mica scales, 1.6kg;

[0070] Ultrafine silicon dioxide (particle size above 1500 mesh), 0.2kg.

[0071] The anticorrosion coating of the present embodiment adopts following method to prepare:

[0072] Step 101, according to the above formula, add ethylene glycol diglycidyl ether and butanol to the F-53 epoxy novolac resin, stir and mix evenly to obtain a resin dilution.

[0073] Step 102, grinding the mica flakes into a powder with a particle size above 400 mesh.

[0074] Step 103, mix the above-mentioned resin diluent, mica flake powder, X41 type...

Embodiment 2

[0083] The present embodiment provides a kind of anticorrosion coating for reinforced concrete, comprises following component:

[0084] F-53 type novolak epoxy resin, 2.1kg;

[0085] Ethylene glycol diglycidyl ether, 1.3kg;

[0086] Butanol, 1.3kg;

[0087] X41 type xylene type unsaturated polyester resin, 0.4kg;

[0088] GY-051 modified amine epoxy resin curing agent, 2.5kg;

[0089] Toluene-2,6-diisocyanate, 0.5kg;

[0090] Mica scales, 1.3kg;

[0091] Ultrafine silicon dioxide (particle size above 1500 mesh), 0.3kg.

[0092] The anticorrosion coating of the present embodiment adopts following method to prepare:

[0093] Step 201, according to the above formula, add ethylene glycol diglycidyl ether and butanol to the F-53 epoxy novolac resin, stir and mix evenly to obtain a resin dilution.

[0094] Step 202, grinding the mica flakes into a powder with a particle size above 400 mesh.

[0095] Step 203, mixing the above-mentioned resin diluent, mica flake powder, X41 t...

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Abstract

The invention discloses an anticorrosive coating material for reinforced concrete, a preparation method and applications thereof, and belongs to the technical field of anticorrosive coating materials,wherein the anticorrosive coating material comprises, by mass, 8-30% of a phenol formaldehyde epoxy resin, 4-20 % of Ethylene glycol diglycidyl ether, 4-20 % of butanol, 1-5 % of a xylene-type unsaturated polyester resin, 7-32 % of a modified amine epoxy resin curing agent, 0.8-4 % of toluene-2,6-diisocyanate and / or modified toluene-2,6-diisocyanate, 5-25 % of mica flakes, and 2-3 % of ultrafinesilica. According to the present invention, the anticorrosive coating material has advantages of good sulfate and chlorine ion barrier performance, low film thickness, low surface energy, strong climate adaptability, good mechanical property, simple coating and the like, can meet the use requirements of high-sulfate and high-chlorine-ion composite salty soil environments, and can ensure the safetyand the long-term stability of the reinforced concrete infrastructure in the high-sulfate and high-chlorine-ion composite salty soil environment.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to an anti-corrosion coating for reinforced concrete, a preparation method and its application in a compound saline soil environment with high sulfate content and high chloride ion content. Background technique [0002] Reinforced concrete is widely used in petrochemical and natural gas engineering projects. During the use of reinforced concrete, the surrounding environment will corrode it and affect its mechanical properties. Therefore, it is necessary to apply anti-corrosion coatings on the surface of reinforced concrete to prevent the reinforced concrete from being corroded. [0003] At present, the commonly used anti-corrosion coatings for reinforced concrete in engineering practice are mainly asphalt coatings and epoxy resin coatings. [0004] In the process of realizing the present invention, the inventors found that there are at least the following problems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/04C09D5/08C09D7/61C09D7/63
CPCC09D5/08C09D163/04C08L67/06C08K13/04C08K7/00C08K3/34C08K3/36C08K5/29
Inventor 钱明张志豪刘彬李东魏巍
Owner BC P INC CHINA NAT PETROLEUM CORP
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