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Heavy-duty waterborne epoxy sealer for bridge and preparation method of sealer

A technology of water-based epoxy and water-based epoxy resin, which is applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., and can solve the problem of poor adhesion, workability and anti-corrosion of multiple layers, and can not solve the problem of inorganic zinc-rich bottom at the same time. Solve the problems of paint sealing and other problems, and achieve the effect of good matching, convenient construction and high adhesion strength

Inactive Publication Date: 2019-07-16
CHONGQING EP ANTICORROSION TECH CO LTD +1
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  • Application Information

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Problems solved by technology

[0005] The invention provides a bridge heavy-duty anti-corrosion water-based epoxy sealer and a preparation method thereof, which is used to solve the problem that the water-based sealer in the prior art cannot simultaneously solve the sealability of the inorganic zinc-rich primer, and the multi-layer matching (matching upper and lower roads attached) Poor focus) and problems with construction and corrosion resistance

Method used

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  • Heavy-duty waterborne epoxy sealer for bridge and preparation method of sealer
  • Heavy-duty waterborne epoxy sealer for bridge and preparation method of sealer
  • Heavy-duty waterborne epoxy sealer for bridge and preparation method of sealer

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preparation example Construction

[0059] A preparation method of bridge heavy-duty anti-corrosion water-based epoxy sealer paint, comprising:

[0060] The preparation method of component A: under normal temperature and pressure, add E20 (53%) water-based epoxy resin and E51 (60%) water-based epoxy resin into the kettle, stir at 500r / min for 10-15min, and then add imported epoxy resin Stir the silane coupling agent at 600r / min for 5min, reduce the speed to 500r / min, slowly add acetylenic diol defoamer, silicone defoamer, wetting agent, zinc chelate antirust additive in order, at 750r / min Stir for 10 minutes at a high speed of 750-1000r / min, add polyurethane thickener, stir for 15-20min, and finally add epoxy reactive diluent AGE, purified water, and stir for 10min at 750r / min;

[0061] Preparation method of component B: under normal temperature and pressure, add polyamide curing agent and aliphatic amine curing agent into the kettle, stir at 750r / min for 10-15min, then add co-solvent, stir at 500r / min for 5min,...

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Abstract

The invention provides a heavy-duty waterborne epoxy sealer for a bridge. The sealer comprises a component A and a component B. The component A comprises E20 (53%) waterborne epoxy resin, E51 (60%) waterborne epoxy resin, an epoxy silane coupling agent, an acetylenic diol defoaming agent, an organosilicone defoaming agent, a wetting agent, a zinc chelate anti-rusting auxiliary agent, a polyurethane thickener and an epoxy reactive diluent AGE. The component B comprises a polyamide curing agent, a fatty amine curing agent, a cosolvent and purified water. The invention also provides a preparationmethod of the heavy-duty waterborne epoxy sealer. The heavy-duty waterborne epoxy sealer can meet the requirements of high penetration, high sealing performance and high strength, and is convenient to apply. The heavy-duty waterborne epoxy sealer only needs to be applied once (with a layer thickness of 30 [mu]m), and the overcoatability of the epoxy sealer is excellent.

Description

technical field [0001] The invention relates to the field of anti-corrosion sealing paint, in particular to a heavy-duty anti-corrosion water-based epoxy sealing paint for bridges and a preparation method thereof. Background technique [0002] The commonly used supporting coatings for heavy anti-corrosion of bridges in my country mainly include oily epoxy sealer paint, epoxy cloud iron intermediate paint, polyurethane topcoat or fluorocarbon topcoat, so the solvent content is high, which is harmful to workers. However, all water-based coatings are currently on the market. very rare. Heavy-duty anti-corrosion coatings refer to a class of anti-corrosion coatings that can be applied in relatively harsh corrosive environments and have a longer protection period than conventional anti-corrosion coatings. [0003] The main difference between heavy-duty anti-corrosion coatings and conventional anti-corrosion coatings is that they have high technical content, high technical difficul...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08
CPCC08L2205/025C09D5/08C09D163/00C08L63/00
Inventor 谭春尧常彦虎岳尧张锐郭芳刘治国王秀玲钟欧
Owner CHONGQING EP ANTICORROSION TECH CO LTD
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