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Permeable reactive anticorrosive material for concrete chimney and application of permeable reactive anticorrosive material

An osmotic reaction type, anti-corrosion material technology, applied in the direction of anti-corrosion coatings, polyether coatings, building types, etc., can solve problems such as shedding, coatings that cannot exert synergistic effects, and poor anti-corrosion effects

Active Publication Date: 2021-07-30
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] However, the chimney anti-corrosion coatings including the above two formulations in the prior art can play a role in anti-corrosion protection to the chimney to a certain extent, but basically only consider the anti-corrosion of the chimney from the perspective of the anti-corrosion coating itself. That is to say, they all focus on their own products, without considering the influence of the chimney concrete's own characteristics on the coating adhesion, as well as the composition of repair materials and various layers of coatings, resulting in a certain The anti-corrosion performance of a single coating is very good, but the anti-corrosion effect is poor when used in combination 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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  • Permeable reactive anticorrosive material for concrete chimney and application of permeable reactive anticorrosive material
  • Permeable reactive anticorrosive material for concrete chimney and application of permeable reactive anticorrosive material
  • Permeable reactive anticorrosive material for concrete chimney and application of permeable reactive anticorrosive material

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Experimental program
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preparation example Construction

[0083] The preparation method of the micron-sized diamine@MOF particles comprises: adding aluminum nitrate and 4,4'-biphenyl dicarboxylic acid to water with a molar ratio of aluminum element and carboxyl group of 1: (0.8-1.2) and dispersing Evenly, heat up to 160-200°C, then adjust the pH of the resulting solution to 2-4, and keep it warm for 5-10 hours; after the reaction is completed, filter, wash, dry and pulverize to obtain micron-sized aluminum MOF particles; The MOF particles are immersed in a diamine solution (isophoronediamine, m-phenylenediamine or m-xylylenediamine), allowed to stand for adsorption for 2-4 hours, and centrifuged to obtain micron-sized diamine@MOF particles.

[0084] The base surface reinforcement material is concrete grouting liquid, including A component and B component with a mass ratio of (4-4.5): (1.5-2.0), wherein:

[0085] The A component includes the following components in mass percentage: 60-68% of bisphenol-A-epichlorohydrin resin with Mw<7...

Embodiment 1

[0095] A osmotic reaction type anticorrosion material for concrete chimneys, including salt-resistant reinforcement material, base surface repair mortar, base surface reinforcement material, bottom layer anticorrosion material and surface layer anticorrosion material sequentially coated or injected on the concrete base surface. in:

[0096] The salt-resistant reinforcing material includes the following components in mass percentage: 3.5% of potassium silicate with a maximum particle size of less than 20nm, 15% of acrylate polymer, 3.5% of polysiloxane, 0.75% of ethoxylated tridecyl alcohol, water balance.

[0097] The technical parameters of the salt-resistant reinforcing material of the present embodiment are shown in the table below:

[0098] technical name Technical data main ingredient polymer, silicate particle diameter 20nm density 1.03g / cm 3

coating surface clear, slightly sticky elongation at break 505％ penetration...

Embodiment 2

[0113] A osmotic reaction type anticorrosion material for concrete chimneys, including salt-resistant reinforcement material, base surface repair mortar, base surface reinforcement material, bottom layer anticorrosion material and surface layer anticorrosion material sequentially coated or injected on the concrete base surface. in:

[0114] The salt-resistant reinforcing material includes the following components in mass percentage: 2% of potassium silicate with a maximum particle size of less than 20nm, 20% of acrylate polymer, 2% of polysiloxane, 1% of ethoxylated tridecyl alcohol, Water 75%.

[0115] The bottom anticorrosion material is a polymer silicate heavy anticorrosion material, including A, B and C three components with a mass ratio of 20:4:1: the A component includes the following components in mass percentage: quartz sand 84.5 %, silicon powder 10.0%, aluminum metaphosphate 5.0%, polyethylene 0.5%. The B component includes the following components in mass percent...

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Abstract

The invention relates to the field of building materials, and discloses a permeable reactive anticorrosive material for a concrete chimney and application thereof, and the permeable anticorrosive material comprises a salt-resistant reinforcing material, base surface repairing mortar, a base surface reinforcing material, a bottom layer anticorrosive material and a surface layer anticorrosive material which are sequentially coated or injected on a concrete base surface. The method comprises the following steps: firstly, carrying out deep salt-resistant reinforcing treatment on concrete by adopting the salt-resistant reinforcing material, then repairing surface defects of the chimney structure by adopting the base surface repairing mortar, carrying out reinforcing treatment by injecting the base surface reinforcing material, and finally, sequentially applying the bottom layer anticorrosive material and a surface layer anticorrosive material so as to further realize an anticorrosive effect. According to the invention, the formula design is comprehensively considered from the whole material of each layer, the material of each layer is excellent in performance, the layers can achieve synergistic interaction and good compatibility, and can adapt to and solve the characteristics of concrete, and the anticorrosive material and the concrete are fused together through the permeation cross-linking reaction among the materials.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a osmotic reaction anticorrosion material for concrete chimneys and its application Background technique [0002] A chimney is a structure that provides ventilation for hot fumes or smoke. In the case of a chemically aggressive output, a sufficiently high stack can allow the airborne chemicals to partially or completely self-neutralize before reaching ground level. Dispersion of pollutants over a larger area can reduce their concentration and facilitate compliance with regulatory limits. The base body of the chimney is mainly made of concrete. Due to the particularity of its use environment, the concrete is very susceptible to corrosion, especially the chimney used for desulfurization. Therefore, anti-corrosion and anti-seepage protection for chimneys is a must. [0003] The current solution for anti-corrosion protection of chimneys is generally to apply anti-corrosion paint ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/61C09D1/04C09D5/08C09D7/65C09D7/63C09D171/00E04G23/02E04H12/28C04B41/71
CPCC09D133/04C09D7/61C09D1/04C09D5/08C09D7/65C09D7/63C09D171/00E04G23/0296E04H12/28C04B41/52C04B41/71C08K3/34C04B41/5024C04B41/483C04B41/4961C04B41/46C04B41/5079C04B41/50C04B41/4857C04B41/4803C04B41/495C04B41/4853C04B41/5015C04B41/4861C04B41/48C04B41/4896
Inventor 缪红波曾婷婷张亚喜
Owner 北京固斯特国际化工有限公司
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