A permeable and cross-linked combined coating for anticorrosion of cooling towers

A cooling tower and cross-linking technology, which is applied in the field of permeable cross-linking combined coatings, can solve the problems of inability to exert synergistic effect of coatings, poor coating adhesion, poor anti-corrosion effect, etc., and achieve good dynamic crack resistance and low elasticity The effect of modulus and ease of construction

Active Publication Date: 2020-12-15
北京固斯特国际化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned anti-corrosion coatings have played the role of anti-corrosion protection for cooling towers to a certain extent, but in the prior art including the above-mentioned products, the anti-corrosion of cooling towers is only considered from the perspective of repair materials and coatings. The focus is on its own products, but it does not consider the influence of the cooling tower concrete's own characteristics on the coating bond, as well as the composition of the repair material and the composition of each layer of coating, so that the anti-corrosion performance of a single coating is very high. Excellent, but the anti-corrosion effect is poor after being used with other repair materials and coatings
Not only the synergistic effect cannot be exerted between various coatings, but also the bonding force between different coatings is poor, and the situation of peeling off may occur

Method used

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  • A permeable and cross-linked combined coating for anticorrosion of cooling towers
  • A permeable and cross-linked combined coating for anticorrosion of cooling towers
  • A permeable and cross-linked combined coating for anticorrosion of cooling towers

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Effect test

Embodiment 1

[0061] The invention relates to a permeable cross-linked combined coating for anticorrosion of cooling towers, which comprises: base surface repair material, primer coating and surface coating in the order of coating.

[0062] The base surface repair material comprises: 50wt% of quartz powder, 45wt% of Portland cement and 5wt% of acrylate / acrylamine / acrylate terpolymer.

[0063] The primer comprises: 50wt% of Portland cement slag, 10wt% of quartz sand and 40wt% of quartz powder.

[0064] The surface coating is divided into an inner wall surface coating and an outer wall surface coating.

[0065] The inner wall surface coating comprises: 22wt% of bisphenol A, 45wt% of epichlorohydrin resin, 17wt% of 3-aminomethyl-3,5,5-trimethylcyclohexylamine, and 16wt% of polyamide.

[0066] The outer wall surface coating comprises: 30 wt% of acrylate polymer, 25 wt% of calcium carbonate, 20 wt% of titanium dioxide and 25 wt% of water.

[0067] When used, the external emulsion used in conju...

Embodiment 2

[0070] The invention relates to a permeable cross-linked combined coating for anticorrosion of cooling towers, which comprises: base surface repair material, primer coating and surface coating in the order of coating.

[0071] The base surface repair material includes 45 wt% of quartz powder, 50 wt% of Portland cement and 5 wt% of acrylate / acrylamine / acrylate terpolymer.

[0072] The primer comprises 45wt% of Portland cement slag, 12wt% of quartz sand and 43wt% of quartz powder.

[0073] The surface coating is divided into an inner wall surface coating and an outer wall surface coating.

[0074] The inner wall surface coating includes 22wt% of bisphenol A, 45wt% of epichlorohydrin resin (MW<700), 17wt% of 3-aminomethyl-3,5,5-trimethylcyclohexylamine, and 16wt% of polyamide %.

[0075] The outer wall surface coating comprises 25 wt% of acrylate polymer, 30 wt% of calcium carbonate, 15 wt% of titanium dioxide and 30 wt% of water.

[0076] When in use, the cured thickness of t...

Embodiment 3

[0078] The invention relates to a permeable cross-linked combined coating for anticorrosion of cooling towers, which comprises: base surface repair material, primer coating and surface coating in the order of coating.

[0079] The base surface repair material includes 55 wt% of quartz powder, 40 wt% of Portland cement and 5 wt% of acrylate / acrylamine / acrylate terpolymer.

[0080] The primer comprises 55 wt% of Portland cement slag, 8 wt% of quartz sand and 37 wt% of quartz powder.

[0081] The surface coating is divided into an inner wall surface coating and an outer wall surface coating.

[0082]The inner wall surface coating includes 23wt% of bisphenol A, 47wt% of epichlorohydrin resin (MW<700), 15wt% of 3-aminomethyl-3,5,5-trimethylcyclohexylamine, and 15wt% of polyamide %.

[0083] The outer wall surface coating comprises 35wt% of acrylate polymer, 20wt% of calcium carbonate, 25wt% of titanium dioxide and 20wt% of water.

[0084] When in use, the cured thickness of the ...

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Abstract

The invention relates to the field of corrosion-resistant materials and discloses a solvent-free permeating crosslinked combined coating for corrosion resisting of a cooling tower. The combined coating comprises a base face repair material, a bottom layer coating, an inner wall face layer coating and an outer wall face layer coating, the base face repair material comprises quartz powder, Portlandcement and acrylic ester / acrylamide / acrylate terpolymer, the bottom layer coating comprises Portland cement slag, quartz sand and quartz powder, the inner wall face layer coating comprises bisphenol A, epoxy chloropropane resin, 3-aminomethyl-3, 5, 5-trimethyl and polyamide, and the outer wall face layer coating comprises acrylate polymer, calcium carbonate, titanium dioxide and water. Starting from overall consideration, the problem of impact of own characteristics of concrete of the cooling tower on coating bonding is solved; the coatings are highly matched, so that a corrosion resisting layer and the concrete are integrated through physiochemical reaction with the aid of mutual infiltration and crosslinking of the coatings to realize lasting corrosion resisting.

Description

technical field [0001] The invention relates to the field of anti-corrosion materials, in particular to a permeable and cross-linked combined coating used for anti-corrosion of natural draft cooling towers. Background technique [0002] The natural draft cooling tower is a facility that cools the circulating water by utilizing the difference in air density inside and outside the tower or the air convection effect formed by natural wind. The base body of the cooling tower is mainly made of concrete. Due to the particularity of its use environment, the concrete is very susceptible to corrosion. Especially for cooling towers using seawater or urban reclaimed water for circulating water, and for exhaust cooling towers that use cooling towers to discharge desulfurized flue gas, the corrosion is particularly serious. In addition, the cooling towers located in the north are extremely vulnerable to freezing and thawing damage due to the severe cold weather. Therefore, it is necess...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/08C09D133/04C09D163/00C09D177/00C09D7/61C09D5/08C04B41/71C04B111/23C04B111/20
CPCC04B28/04C04B28/08C04B41/52C04B41/71C04B2111/00508C04B2111/2023C04B2111/23C04B2201/10C08K2003/2241C08K2003/265C09D5/08C09D133/04C09D163/00C09D7/61C08K3/26C08K3/22C08L77/00C04B14/06C04B24/2688C04B41/5079C04B41/5083C04B41/46C04B41/4853C04B41/4892C04B41/483C04B41/501C04B41/50
Inventor 缪红波
Owner 北京固斯特国际化工有限公司
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