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Reinforcing steel bar surface oxide skin densification treatment method and reinforcing steel bar surface oxide skin densification corrosion-resistant film

A technology of surface oxidation and treatment method, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve problems such as poor anti-corrosion effect

Pending Publication Date: 2022-04-05
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, the application provides a densification treatment method of oxide skin on the surface of steel bars and a densified corrosion-resistant film on the surface of steel bars, which can solve the technical problem of poor anti-corrosion effect when the existing corroded metal is subjected to anti-corrosion treatment

Method used

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  • Reinforcing steel bar surface oxide skin densification treatment method and reinforcing steel bar surface oxide skin densification corrosion-resistant film
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  • Reinforcing steel bar surface oxide skin densification treatment method and reinforcing steel bar surface oxide skin densification corrosion-resistant film

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Embodiment 1

[0065] The embodiment of the present application provides a method for densification treatment of steel bar surface scale, which specifically includes:

[0066] 1. Tetraethyl silicate (TEOS), 3-epoxypropyloxypropyltrimethoxysilane (GPTMS), dehydrated alcohol and cerium nitrate solution were stirred at a constant temperature magnetic stirrer at 800r / min for 80min, using The acid-base regulator adjusts the pH value of the corrosion-resistant solution to 11 to obtain a corrosion-resistant solution; wherein, the mass ratio of TEOS:GPTMS is 1:0.29; Ce 3+ The mass ratio to Si is 1:0.11.

[0067] 2. Immerse the steel bar with oxide skin into the doped Ce prepared above at room temperature 3+ ionic corrosion-resistant solution, then take out the steel bar, put the steel bar in an oven and dry it at 200°C for 4 hours, and form a densified corrosion-resistant film on the surface of the steel bar with oxide skin, and obtain the treated steel bar, marked as Sol -Gel-Ce.

[0068] 3. Det...

Embodiment 2

[0077] The embodiment of the present application provides a method for densification treatment of steel bar surface scale, which specifically includes:

[0078] 1. Tetraethyl silicate (TEOS), 3-epoxypropyloxypropyltrimethoxysilane (GPTMS), dehydrated alcohol and cerium nitrate solution were stirred at a constant temperature magnetic stirrer at 800r / min for 80min, using The acid-base regulator adjusts the pH value of the corrosion-resistant solution to 11 to obtain a corrosion-resistant solution; wherein, the mass ratio of TEOS:GPTMS is 1:0.29; Ce 3+ The mass ratio to Si is 1:0.11.

[0079] 2. Immerse the steel bar with oxide skin into the doped Ce prepared above at room temperature 3+ Ionic corrosion-resistant solution, then take out the steel bar, put the steel bar in an oven and dry it at 200°C for 4 hours, and form a densified corrosion-resistant film on the surface of the steel bar with oxide skin to obtain the treated steel bar.

[0080] 3. Measure the morphology of the...

Embodiment 3

[0082] The embodiment of the present application provides a method for densification treatment of steel bar surface scale, which specifically includes:

[0083] 1. Tetraethyl silicate (TEOS), 3-epoxypropyloxypropyltrimethoxysilane (GPTMS), dehydrated alcohol and cerium nitrate solution were stirred at a constant temperature magnetic stirrer at 800r / min for 80min, using The acid-base regulator adjusts the pH value of the corrosion-resistant solution to 11 to obtain a corrosion-resistant solution; wherein, the mass ratio of TEOS:GPTMS is 1:0.29; Ce 3+ The mass ratio to Si is 1:0.11.

[0084] 2. Immerse the steel bar with oxide skin into the doped Ce prepared above at room temperature 3+ Ionic corrosion-resistant solution, then take out the steel bar, put the steel bar in an oven and dry it at 200°C for 4 hours, and form a densified corrosion-resistant film on the surface of the steel bar with oxide skin to obtain the treated steel bar.

[0085] 3. Measure the morphology of the...

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Abstract

The invention belongs to the technical field of metal corrosion prevention, and particularly relates to a steel bar surface oxide skin densification treatment method and a steel bar surface oxide skin densification corrosion-resistant film. The invention provides a reinforcing steel bar surface oxide skin densification treatment method. The reinforcing steel bar surface oxide skin densification treatment method comprises the steps that 1, a reinforcing steel bar with oxide skin on the surface is soaked in a corrosion-resistant solution; wherein the anti-corrosion solution comprises an anti-corrosion metal ion solution, tetraethyl silicate, alkoxy silane, an acid-base regulator and a solvent; in the corrosion-resistant solution, the mass ratio of the metal element to the silicon element is 1: (1-10000), and the pH value of the corrosion-resistant solution is 7-14; and 2, the treated reinforcing steel bar is taken out to be dried and / or dried, a corrosion-resistant layer is formed on the oxide skin of the reinforcing steel bar, and the densified corrosion-resistant film of the oxide skin on the surface of the reinforcing steel bar is obtained. According to the densification treatment method for the steel bar surface oxide skin, the technical problem that the anti-corrosion effect is poor when existing corroded metal is subjected to anti-corrosion treatment is effectively solved.

Description

technical field [0001] The application belongs to the technical field of metal anticorrosion, and in particular relates to a treatment method for densification of scale on the surface of steel bars and a densified corrosion-resistant film on the surface of steel bars. Background technique [0002] Reinforced concrete structure combines the advantages of steel bars and concrete, and has a low cost. It is the preferred form of engineering structure design. Since the beginning of the last century, concrete structures have been used more and more widely. As time goes by, people have gradually realized that the deterioration of concrete structures under many environmental conditions is difficult to meet the design requirements. Corrosive media such as oxygen, water, and chloride ions can easily enter the concrete and Reaching the surface of the steel bar, the oxide skin on the steel bar surface is gradually destroyed, corroded and rusted, and then the concrete cracks and falls of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/12
Inventor 孟国哲曾彦玮杨柳刘国强任盼盼郭宏磊雷冰冯志远
Owner SUN YAT SEN UNIV
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