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Ocean engineering concrete corrosion-resistant coating and preparation method thereof

A corrosion-resistant coating and marine engineering technology, applied in the direction of coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of reducing the durability of concrete structures, cracking and cracking of concrete, and achieve extended service life and self-healing properties Effects of blocking, excellent adhesion and corrosion protection

Active Publication Date: 2021-05-11
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the intrusion of chloride ions in the environmental medium or the chloride ions of raw materials into the interior of the concrete, the corrosion and expansion of the steel bars cause the cracking and cracking of the concrete and corrosion, which significantly reduces the durability of the concrete structure.

Method used

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  • Ocean engineering concrete corrosion-resistant coating and preparation method thereof
  • Ocean engineering concrete corrosion-resistant coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A marine engineering concrete corrosion-resistant coating, the corrosion-resistant coating is sprayed or brushed on the concrete surface after the A component and the B component are uniformly mixed,

[0038] Among them, component A includes by weight: 80 parts of water-based non-ionic epoxy resin, 5 parts of C10 alkyl glycidyl ether, 1 part of tridecafluorooctylpropyl cage silsesquioxane, and 2 parts of zinc powder , 1 part of magnesium aluminum hydrotalcite powder, 0.1 part of dispersant polyoxyethylene isodecyl ether, 0.1 part of silicone defoamer;

[0039] Among them, component B includes by weight: 50 parts of modified aromatic amine curing agent, 5 parts of C10 alkyl glycidyl ether, 5 parts of self-repairing microcapsules, 1 part of leveling agent silicone polyether copolymer, 1 part of oxidant 4-tert-butylcatechol, 0.1 part of adhesion promoter BYK-4511, 1 part of UV absorber 2-hydroxy-4-methoxybenzophenone.

[0040]The self-healing microcapsules are prepared by...

Embodiment 2

[0042] A marine engineering concrete corrosion-resistant coating, the corrosion-resistant coating is sprayed or brushed on the concrete surface after the A component and the B component are uniformly mixed,

[0043] Among them, component A includes by weight: 90 parts of water-based non-ionic epoxy resin, 8 parts of C11 alkyl glycidyl ether, 3 parts of dodecafluoroheptylpropyl cage silsesquioxane, and 2.5 parts of zinc powder , 1.5 parts of magnesium aluminum hydrotalcite powder, 0.3 parts of dispersant polyoxyethylene styryl phenyl ether, 0.3 parts of silicone defoamer;

[0044] Among them, component B includes by weight: 60 parts of modified aromatic amine curing agent, 8 parts of C11 alkyl glycidyl ether, 7 parts of self-repairing microcapsules, 1.5 parts of leveling agent silicone polyether copolymer, anti- Oxidant 2,2-methylene-bis(4-methyl-6-tert-butylphenol) 5 parts, adhesion promoter AP-507 0.7 parts, thickener carboxymethyl cellulose 2 parts.

[0045] The self-healin...

Embodiment 3

[0048] A marine engineering concrete corrosion-resistant coating, the corrosion-resistant coating is sprayed or brushed on the concrete surface after the A component and the B component are uniformly mixed,

[0049] Among them, component A includes by weight: 100 parts of water-based non-ionic epoxy resin, 10 parts of C12 alkyl glycidyl ether, 5 parts of dodecafluoroheptylpropyl cage silsesquioxane, and 3 parts of magnesium powder , 2 parts of magnesium aluminum hydrotalcite powder, 0.5 part of dispersant polyoxyethylene styryl phenyl ether, 0.5 part of silicone defoamer;

[0050] Among them, component B includes by weight: 50 parts of modified aromatic amine curing agent, 10 parts of C12 alkyl glycidyl ether, 10 parts of self-repairing microcapsules, 3 parts of leveling agent silicone polyether copolymer, anti- 5 parts of oxidizing agent 2,6-di-tert-butyl-p-cresol, 0.5 parts of adhesion promoter AP-507, and 3 parts of ultraviolet absorber 2-hydroxy-4-methoxybenzophenone.

[...

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Abstract

The invention provides an ocean engineering concrete corrosion-resistant coating and a preparation method thereof. The corrosion-resistant coating is formed by uniformly mixing a component A and a component B and spraying or brushing the obtained mixture on the surface of concrete, wherein the component A comprises the following components in parts by weight: water-based nonionic epoxy resin, C10-C12 alkyl glycidyl ether, polyhedral oligomeric silsesquioxane, metal powder, magnesium-aluminum hydrotalcite powder, a dispersing agent and a defoaming agent, and the component B comprises the following components in parts by weight: a modified aromatic amine curing agent, C10-C12 alkyl glycidyl ether, self-repairing microcapsules, a flatting agent, an antioxidant, an adhesion promoter and other auxiliaries. The corrosion-resistant coating has excellent cohesiveness and corrosion resistance, meanwhile, the self-repairability of the corrosion-resistant coating can be achieved, migration of chloride ions can be prevented, then the service life of a concrete structure is prolonged, and the corrosion-resistant coating can be widely applied to protection of ocean engineering concrete structures.

Description

technical field [0001] The invention relates to the field of concrete protection, in particular to a marine engineering concrete corrosion-resistant coating and a preparation method thereof. Background technique [0002] Concrete is widely used in harbor engineering, bridges, underground engineering, and infrastructure construction. However, concrete structures still have the influence of the external environment, which can easily lead to failure and cause major accidents. However, there are complicated and various reasons depending on the application environment. Marine engineering is the focus of development this year, and the durability, safety and service life of marine concrete structures have always been the focus of research. Due to the intrusion of chloride ions in the environmental medium or the chloride ions of raw materials into the interior of the concrete, the corrosion and expansion of the steel bars cause the cracking and cracking of the concrete and corrosio...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/10C09D7/61C09D7/65C09D7/48
CPCC09D163/00C09D5/10C09D5/106C09D7/61C09D7/65C09D7/48C09D7/70C08K2003/0893C08L2205/035C08L2201/08C08L83/08C08L91/005C08K3/08C08K3/26C08K9/10C08K5/42C08K5/13C08K13/06C09D7/43C09D7/63C09D7/45C09D7/47C09D7/69C09D5/08C08L63/00B01J13/18C04B41/63C04B2111/74C04B41/009C04B41/4853C04B2111/26C04B28/02C04B41/4961C04B41/4543C04B2103/50C04B2103/408C04B2103/608C04B14/34B01J13/14C04B41/4539
Inventor 明阳陈平李玲胡成李青陈宣东刘荣进李顺凯赵艳荣韦家崭
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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