A kind of moisture curing epoxy asphalt anticorrosion coating and preparation method thereof

A technology of epoxy asphalt and anti-corrosion coatings, which is applied in the field of coatings. It can solve the problems of difficult application and the impossibility of completely drying the surface, and achieve the effects of high-efficiency construction, excellent resistance to salt spray, and efficient and convenient construction.

Active Publication Date: 2016-08-24
天津市津海特种涂料装饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, due to the influence of tidal fluctuations and waves splashing, the surface of the steel structure in the tidal range area under marine environmental conditions cannot be completely dry, and it is difficult to apply effective coatings to it.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1. Preparation of component A: by weight percentage, solvent 9%, thickener 2%, dispersant 1.1%, toughening agent 7.6%, epoxy resin 34%, coal tar pitch 25%, antirust pigment 13 %, 10% talcum powder in the reaction kettle at 115-120°C, keep warm for two hours, then cool down to 40°C.

[0015] 2. Preparation of component B: 65% of polyamidoamines; 12% of amidoamine curing agents; 24% of aromatic hydrocarbons, ketones or alcohol solvents in the reaction kettle at 81-86°C, keep warm for two hours, Cool down to 40°C.

[0016] Before coating, mix components A and B, and stir evenly to obtain a brown-red moisture-curing epoxy asphalt anticorrosion coating.

Embodiment 2

[0018] 1. Preparation of component A: by weight percentage, solvent 11%, thickener 1.5%, dispersant 0.8%, toughening agent 5.7%, epoxy resin 34%, coal tar pitch 29%, antirust pigment 9 %, talcum powder 11% in the reactor at 115-120°C, keep warm for two hours, then cool down to 40°C.

[0019] 2. Preparation of component B: 75% of polyamidoamines; 15% of amidoamine curing agents; 10% of aromatic hydrocarbons, ketones or alcohol solvents in the reaction kettle at 81-86°C, heat for two hours, Cool down.

[0020] Before coating, the components A and B are mixed and stirred evenly to obtain a moisture-curing epoxy asphalt anticorrosion coating; the coating in this example can be used to coat a coating with a thickness of 130-240 μm.

Embodiment 3

[0022] 1. Preparation of component A: by weight percentage: solvent 11%, thickener 2.3%, dispersant 0.9%, toughening agent 5%, epoxy resin 37%, coal tar pitch 27%, antirust pigment 16 %, 9% talcum powder in the reactor at 115-120°C, keep warm for two hours, then cool down to 40°C;

[0023] 2. Preparation of component B: 78% of amino polyamide; 8% of amidoamine curing agent; 15% of aromatic hydrocarbon, ketone or alcohol solvent in the reaction kettle at 81-86°C, keep warm for two hours, and cool down to 40°C.

[0024] Before coating, the components A and B are mixed and stirred evenly to obtain a moisture-curing epoxy asphalt anticorrosion coating.

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Abstract

The invention relates to a moisture-curing epoxy asphalt anticorrosion coating and a preparation method thereof. The moisture-curing epoxy asphalt anticorrosion coating is composed of component A and component B in a weight percentage of 2-5:3-1; component A The raw material composition and weight percentage are respectively: solvent 9%~12%, thickener 1%~2.5%, dispersant 0.8%~1.2%, toughening agent 5%~7%, epoxy resin 33%~ 37%, coal tar pitch 19% to 30%, antirust pigment 9% to 16%, talcum powder 9% to 12%. The invention also includes methods of making such coatings. Its beneficial effect is that when the ambient humidity is higher than 85%, normal construction can still be carried out, and the link of using a dehumidifier to reduce the ambient humidity in the construction process is omitted, which greatly saves energy, reduces construction costs, and improves work efficiency.

Description

technical field [0001] The invention relates to a moisture-curing epoxy asphalt anticorrosion coating and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] With the development of ocean development and port construction, the number of facilities using steel structures in marine engineering has increased. In order to ensure the service life of steel structures, efficient and durable protective measures must be taken. Among them, coating protection is the most commonly used anti-corrosion method for steel structures. As we all know, due to the influence of tidal fluctuations and waves splashing, the surface of the steel structure in the tidal range area under marine environmental conditions cannot be completely dry, and it is difficult to apply general coatings effectively. Therefore, it is necessary to develop special anti-corrosion coatings suitable for spray areas, tidal range areas and even underwater applications, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D163/04C09D195/00C09D5/08C09D7/12
Inventor 刘国海武学华
Owner 天津市津海特种涂料装饰有限公司
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