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Weathering resistant steel surface rust layer stabilizing agent and preparing and use method thereof

A technology of weathering steel and stabilizer, applied in the direction of metal material coating process, etc., can solve the problems of slow stabilization of rust layer, sag of weathering steel rust liquid, etc., achieve stable and dense rust layer structure, accelerate rust layer stabilization, The effect of reduced generation

Pending Publication Date: 2020-08-25
CENT IRON & STEEL RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above analysis, the present invention aims to provide a weathering steel surface rust layer stabilizer and its preparation and use method to solve the problems of weathering steel rust liquid sagging and slow rust layer stabilization in the prior art

Method used

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  • Weathering resistant steel surface rust layer stabilizing agent and preparing and use method thereof
  • Weathering resistant steel surface rust layer stabilizing agent and preparing and use method thereof
  • Weathering resistant steel surface rust layer stabilizing agent and preparing and use method thereof

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preparation example Construction

[0067] The present invention also provides a preparation method of a weathering steel surface rust layer stabilizer, comprising the following steps:

[0068] (1) take polyvinyl butyral ester, chromium sulfate, ferric oxide, ferric oxide and ethanol (or ethyl acetate) for subsequent use according to mass percentage;

[0069] (2) First mix and stir the weighed polyvinyl butyral ester, chromium sulfate, ferric oxide, and ferric oxide, and then add solvent ethanol or ethyl acetate, which is conducive to full dissolution and provides convenience for subsequent stirring. Stir thoroughly to obtain a stabilizer with uniform texture. The preparation method of the weathering steel surface rust layer stabilizer of the present invention is simple and low in cost.

[0070] The invention also provides a method for using the stabilizer for the rust layer on the weathering steel surface. The rust layer stabilizer on the weathering steel surface is used to directly treat the weathering steel by...

Embodiment 1

[0076] A rust layer stabilizing treatment agent on the surface of weathering steel, the composition of which is: 2% of polyvinyl butyral ester, 12% of chromium sulfate, 15% of ferric oxide, 20% of ferric oxide, 51% of ethanol %. Ethanol can also be replaced with ethyl acetate.

Embodiment 2

[0078] A rust layer stabilizing agent on the surface of weathering steel, the composition of which is: 10% polyvinyl butyral ester, 5% chromium sulfate, 15% iron sesquioxide, 1% ferric iron tetroxide, 69% ethanol by mass percentage %. Ethanol can also be replaced with ethyl acetate.

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Abstract

The invention discloses a weathering resistant steel surface rust layer stabilizing agent and a preparing and use method thereof, and belongs to the technical field of metal corrosion and protection.The problem that in the prior art, weathering resistant steel is in rust liquid sagging, and rust layer stabilizing is slow can be solved, the weathering resistant steel rust layer stabilizing is promoted, meanwhile, the corrosion rate and the corrosion amount of the steel can be greatly reduced, the weathering resistant steel surface rust layer stabilizing agent is used for weathering resistant corrosion resistant steel surface coating in a self weathering type, stabilizing of a weathering resistant corrosion resistant steel surface rust layer can be promoted, the stable rust layer forming time is shortened, and the stabilizing agent comprises, by mass percent, 2 to 10% of polyvinyl butyral ester, 5 to 12% of chromium sulfate, 5 to 18% of iron sesquioxide, 1 to 20% of ferroferric oxide and the balance ethyl alcohol or ethyl acetate. The weathering resistant steel surface rust layer stabilizing agent is simple in treatment process, and suitable for being used on site, the rust layer stabilizing agent is used for greatly reducing the corrosion rate of weathering resistant corrosion resistant steel, forming of a dense inner rust layer is accelerated, and a steel corrosion resistanceproperty and the use safety can be improved.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and protection, and in particular relates to a weathering steel surface rust layer stabilizer and a preparation and use method thereof. Background technique [0002] Compared with ordinary carbon steel, the most prominent advantage of weathering steel is that it can be used naked, which can not only reduce the cost of painting but also has environmental protection advantages. Existing studies have shown that the stable rust layer on the surface of weathering steel is mainly composed of a continuous dense inner rust layer and a loose and porous outer rust layer, and its corrosion resistance is mainly derived from the inner rust layer enriched and precipitated by alloying elements. However, it takes a long time (3-10a or more) for weathering steel to complete the stabilization of the rust layer. Before the formation of the stabilized rust layer, the phenomenon of early rust liquid hanging an...

Claims

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Application Information

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IPC IPC(8): C23C22/04
CPCC23C22/04
Inventor 杨忠民林鹏飞李昭东陈颖曹燕光王慧敏
Owner CENT IRON & STEEL RES INST
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