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Concrete corrosion inhibitor and preparation method thereof

An anti-corrosion agent and anti-oxidant technology, applied in the direction of anti-corrosion coatings, coatings, polyether coatings, etc., can solve the problems of insufficient durability protection, high self-shrinkage and brittleness of concrete, and achieve compact structure and good compactness , strong hydrophobic effect

Active Publication Date: 2021-10-01
南京友西科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improving the resistance of concrete itself to corrosion is the most important and fundamental protection principle, but the first method has certain limitations
First of all, the performance defects of high-performance concrete that deserve attention are high self-shrinkage and brittleness; secondly, concrete is a porous material, and environmental factors such as seawater and freezing mostly cause corrosion of concrete structures from the surface, and concrete alone is not enough Achieve durable protection

Method used

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  • Concrete corrosion inhibitor and preparation method thereof
  • Concrete corrosion inhibitor and preparation method thereof
  • Concrete corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A concrete anticorrosion agent is prepared through the following steps:

[0043] S1: Mix 40 parts of pyroglucinol triglycidyl ether and 40 parts of trioctylamine ethyl ammonium hydroxide, heat to 80°C, and react for 2 hours;

[0044] S2: After the reaction of S1 is completed, add 100 parts of trifunctional polyether polyol (Puranol G 305), heat to 100°C, and continue the reaction for 4 hours;

[0045] S3: Add 10 parts of m-xylylenediamine to the mixture obtained after the reaction in S2 to continue the reaction for 1 hour, and lower the temperature to 25° C. to obtain the anticorrosion agent.

Embodiment 2

[0047] A concrete anticorrosion agent is prepared through the following steps:

[0048] S1: Mix 30 parts of pyroglucinol triglycidyl ether and 40 parts of trioctylamine ethyl ammonium hydroxide, heat to 60°C, and react for 3 hours;

[0049] S2: After the reaction of S1 is completed, add 80 parts of trifunctional polyether polyol (Puranol G 307), heat to 90°C, and continue the reaction for 6 hours;

[0050] S3: Add 20 parts of m-xylylenediamine, 0.3 parts of polydimethylsiloxane and 2 parts of chemnox 168 to the mixture obtained after the reaction of S2, continue the reaction for 2 hours, and lower the temperature to 25° C. to obtain the anti-corrosion agent.

Embodiment 3

[0052]A concrete anticorrosion agent is prepared through the following steps:

[0053] S1: Mix 40 parts of pyroglucinol triglycidyl ether and 30 parts of trioctylamine ethyl ammonium hydroxide, heat to 60°C, and react for 3 hours;

[0054] S2: After the reaction of S1 is completed, add 80 parts of trifunctional polyether polyol (Puranol G 306), heat to 110°C, and continue the reaction for 4 hours;

[0055] S3: Add 15 parts of m-xylylenediamine to the mixture obtained after the reaction in S2 to continue the reaction for 1 hour, and lower the temperature to 25° C. to obtain the anticorrosion agent.

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Abstract

The invention relates to the field of concrete corrosion resistance, in particular to a concrete corrosion inhibitor and a preparation method thereof. The corrosion inhibitor is prepared from the following components in parts by weight: 80 to 100 parts of polyether polyol with three functional groups, 30 to 40 parts of phloroglucinol triglycidyl ether, 30 to 40 parts of trioctyl amine ethyl ammonium hydroxide and 10 to 20 parts of m-xylene diamine. According to the invention, the whole body obtained after the reaction of the phloroglucinol triglycidyl ether and the trioctyl amine ethyl ammonium hydroxide is used as the chain extender of the trifunctional polyether polyol, and then the corrosion inhibitor is obtained through curing. The corrosion inhibitor disclosed by the invention can be coated on a mixed energy surface in a spraying manner before being completely cured, and a compact hydrophobic polymeric membrane is formed after being cured, so that a corrosive environment is isolated, and a relatively good effect of protecting concrete is achieved.

Description

technical field [0001] The invention relates to the field of concrete anticorrosion, in particular to a concrete anticorrosion agent and a preparation method thereof. Background technique [0002] Concrete has the advantages of simple production process, low price, stable physical and chemical properties, etc., and has been widely used in the civil engineering industry. Concrete needs to resist various destructive factors under actual use conditions, and maintain the strength and appearance integrity for a long time. Its structure can be maintained without additional cost reinforcement within the specified service life and under various environmental conditions. Its capacity for safety, normal use, and acceptable appearance is known as the durability of concrete. [0003] There are many reasons that affect the durability of concrete. Among them, the use environment has the longest duration in the entire life cycle of the concrete structure and has the greatest impact on the...

Claims

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Application Information

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IPC IPC(8): C09D5/08C09D171/00C08G65/333
CPCC08G65/33396C08G65/33313C09D5/08C09D171/00C08G2150/90
Inventor 鹿立云王晓芳盛思仲黄雪段周玉
Owner 南京友西科技集团股份有限公司
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