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Stabilizer for promoting the formation of weather-resistant steel rust layer and preparation method of weather-resistant steel rust layer

A stabilizer and weather-resistant steel technology, applied in the coating process of metal materials, etc., can solve the problems of uneven rust layer formation and high cost, achieve uniform corrosion, easy operation, and prevent the loss of rust liquid

Inactive Publication Date: 2021-04-20
北京创氪材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing methods for stabilizing the rust layer can reduce the pollution of rust liquid, accelerate the stabilization of the rust layer, and improve the appearance of the steel structure. around year

Method used

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  • Stabilizer for promoting the formation of weather-resistant steel rust layer and preparation method of weather-resistant steel rust layer
  • Stabilizer for promoting the formation of weather-resistant steel rust layer and preparation method of weather-resistant steel rust layer
  • Stabilizer for promoting the formation of weather-resistant steel rust layer and preparation method of weather-resistant steel rust layer

Examples

Experimental program
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preparation example Construction

[0036] Embodiment also provides a kind of preparation method of weather-resistant steel rust layer, described method comprises the steps:

[0037] Step 1, removing the scale on the surface of the steel substrate: removing the scale on the surface of the steel substrate by shot blasting or sandblasting;

[0038] Step 2, preparing the above-mentioned stabilizer: nano-α-FeOOH, nano-γ-FeOOH, nano-Fe 3 o 4 、CuSO 4 and Cr 2 (SO 4 ) 3 Uniformly dispersed in aqueous acrylic acid solution to obtain the stabilizer;

[0039] Step 3, promoting the formation of a stable rust layer on the weathering steel: coating the formulated stabilizer on the surface of the weathering steel, and drying to obtain a stabilizer formation layer; during the subsequent service of the weathering steel, water and oxygen in the air permeate Form a layer through the stabilizer, and electrochemically corrode the weathering steel to form a stable rust layer;

[0040] After the uniform rust layer is formed, t...

Embodiment 1

[0045] In this embodiment, the verification of the stabilizer based on the stabilized rust layer color to promote the formation of the weather-resistant steel rust layer in the atmospheric exposure experiment includes the following steps:

[0046] S1. Cut the weathering steel into 60mm×40mm. After degreasing with acetone, the surface is sandblasted and cleaned with absolute ethanol and dried.

[0047] S2. Prepare a stabilizer that promotes the formation of weather-resistant steel rust layer: nano-α-FeOOH, nano-γ

[0048] -FeOOH, Nano Fe 3 o 4 、CuSO 4 and Cr 2 (SO 4 ) 3 uniformly dispersed in aqueous acrylic acid solution to obtain the stabilizer; the weight percent of the stabilizer is: 3% nanometer α-FeOOH, 0.5% nanometer γ-FeOOH, 2% nanometer Fe 3 o 4 , 2% CuSO 4 and 0.5% Cr 2 (SO 4 ) 3 , and the balance is aqueous acrylic acid solution. The prepared stabilizer is sprayed on the surface of the weathering steel sample (film thickness 200 μm), and dried in the air ...

Embodiment 2

[0054] The verification of the stabilizer based on the stabilized rust layer color of the present embodiment to promote the formation of the weather-resistant steel rust layer in the atmospheric exposure experiment, its steps and effects are basically the same as in Example 1, except that:

[0055] The weight percent of described stabilizer is:

[0056] 1% Nano α-FeOOH, 10% Nano γ-FeOOH, 10% Nano Fe 3 o 4 , 3% CuSO 4 and 3% Cr 2 (SO 4 ) 3 , and the balance is aqueous acrylic acid solution.

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Abstract

The invention belongs to the technical field of weather-resistant steel surface pretreatment, relates to corrosion of weather-resistant steel materials in atmospheric environments, and in particular to a stabilizer for promoting the formation of weather-resistant steel rust layers and a preparation method for weather-resistant steel rust layers. The components of the stabilizer include: nanometer α-FeOOH, nanometer γ-FeOOH, nanometer Fe 3 o 4 、CuSO 4 、Cr 2 (SO 4 ) 3 , water-based acrylic acid and water; the nano-α-FeOOH, nano-γ-FeOOH, nano-Fe 3 o 4 、CuSO 4 and Cr 2 (SO 4 ) 3 Uniformly dispersed in water-based acrylic acid aqueous solution; where nano-α-FeOOH, nano-γ-FeOOH, nano-Fe 3 o 4 It can induce the nucleation of the rust layer, and at the same time, the water-permeable and oxygen-permeable stabilizer coating properties can make the weathering steel surface uniformly corroded during the service process, and the uniform corrosion will cause the rust layer stabilizer to fall off evenly, making the color of the weathering steel structure more uniform.

Description

technical field [0001] The invention belongs to the technical field of weather-resistant steel surface pretreatment, relates to corrosion of weather-resistant steel materials in atmospheric environments, and in particular to a stabilizer for promoting the formation of weather-resistant steel rust layers and a preparation method for weather-resistant steel rust layers. Background technique [0002] Although weathering steel greatly reduces the atmospheric corrosion rate with the help of its surface protective rust layer, in the natural state, the formation of its protective rust layer often takes several years. Before the protective rust layer is formed, the appearance of the steel structure is very poor. , the rust liquid produced will also pollute the environment, and in coastal or high-temperature and high-humidity areas, it is difficult to form a protective rust layer. [0003] Japanese scholars have been developing and researching weathering steel rust layer stabilizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/50
CPCC23C22/50
Inventor 张旭苏宝瀛宿仲刚
Owner 北京创氪材料科技有限公司
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