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Weathering steel surface rust layer stabilizing treatment agent and weathering steel surface coating film treatment method

A stabilizing treatment agent and coating film treatment technology, which is applied in the field of corrosion of steel materials, can solve problems such as scattering, difficulty in forming a dense rust layer, and sagging of rust liquid, so as to achieve good corrosion resistance and avoid the effect of sagging of rust liquid

Active Publication Date: 2022-02-18
SHOUGANG CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a weathering steel surface rust layer stabilization treatment agent and a weathering steel surface coating film treatment method to solve the problem of - In the marine and atmospheric environment, it is difficult for weathering steel to quickly form a dense rust layer, resulting in technical problems such as rust liquid sagging and scattering

Method used

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  • Weathering steel surface rust layer stabilizing treatment agent and weathering steel surface coating film treatment method
  • Weathering steel surface rust layer stabilizing treatment agent and weathering steel surface coating film treatment method
  • Weathering steel surface rust layer stabilizing treatment agent and weathering steel surface coating film treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] The raw materials of the treatment agent include in parts by weight: 60 parts of polyvinyl butyral resin, 3 parts of Fe 2 o 3 , 0.5 parts of phosphoric acid, 3 parts of chromium sulfate, 6 parts of Cr with a particle size of 1 to 30 μm 2 o 3 , 2 parts of sodium molybdate, 0.1 part of surface additive BYk-310, 0.08 part of wetting and dispersing agent BYK-101, 0.2 part of leveling agent BYK-300.

[0080] (1) Preparation of treatment agent:

[0081] First dissolve the polyvinyl butyral resin varnish completely in 10 times of absolute ethanol, then add the dissolved polyvinyl butyral resin varnish into the high-speed disperser, and weigh it according to the above mass percentage Fe 2 o 3 , phosphoric acid, chromium sulfate, Cr 2 o 3 , Sodium molybdate, surface additives, wetting and dispersing agent, and leveling agent are sequentially added to the high-speed disperser, and stirred while adding, the speed is 5000r / min, and the stirring time is 20-30min.

[0082] (2...

Embodiment 2

[0087] The treatment agent raw material consists of 65 parts of water-based acrylic resin, 6 parts of FeO, 1 part of sodium phosphate, 6 parts of chromium sulfate, 2 parts of CaO with a particle size of 120nm to 500nm, 3 parts of sodium molybdate, Composed of 0.2 parts of surface additive BYK-378, 0.15 parts of wetting and dispersing agent BYK-130, and 0.12 parts of leveling agent BYK-306.

[0088] Treatment agent preparation, sample preparation and coating film treatment are the same as in Example 1.

Embodiment 3

[0090] The weathering steel surface coating film treatment agent consists of 70 parts of polyvinyl butyral resin varnish, 4 parts of Fe 3 o 4 , 1 part of potassium phosphate, 3.5 parts of chromium sulfate, 8 parts of Al with a particle size of 20-30 μm 2 o 3 , 5 parts of sodium molybdate, 0.26 parts of surface additive BYK-378, 0.25 parts of wetting and dispersing agent BYK-160, 0.23 parts of leveling agent BYK-361.

[0091] Treatment agent preparation, sample preparation and coating film treatment are the same as in Example 1.

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Abstract

The invention discloses a treatment agent for stabilizing the rust layer on the surface of weathering steel and a method for treating the coating film on the surface of weathering steel. The treatment agent includes the following components in parts by weight: film-forming agent: 50-80 parts; inducer: 1 ~10 parts; Phosphating agent: 0.2~1 part; Accelerator: 1~5 parts; Modifier: 1~10 parts; Corrosion inhibitor: 1~10 parts; Surface additive: 0.05~0.3 parts; Wetting Dispersant: 0.05-0.4 parts; leveling agent: 0.05-0.4 parts. The weather-resistant steel treated with the surface coating film of the treatment agent disclosed in the present invention can quickly form a dense and stable rust layer when used in a marine atmospheric environment, shorten the formation period to 1 to 2 years, and have an impedance 100 times that of bare steel , good corrosion resistance, preventing environmental pollution problems such as rust liquid sagging and scattering.

Description

technical field [0001] The invention belongs to the technical field of corrosion of iron and steel materials, and in particular relates to a treatment agent for stabilizing the rust layer on the surface of weathering steel and a coating film treatment method for the surface of weathering steel. Background technique [0002] The weathering steel surface rust layer stabilization treatment agent is a coating product that promotes the formation of a stable rust layer on the weathering steel surface and improves the corrosion resistance of the weathering steel. Weathering steel itself is alloyed by adding corrosion-resistant elements, such as Cu, P, etc., to promote the formation of a dense protective film of corrosion products in the metal material in the corrosion system, thereby reducing the corrosion rate and enhancing the corrosion resistance of the material. In the industrial atmospheric environment, the atmospheric corrosion resistance of weathering steel shows obvious adv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D129/14C09D133/04C09D5/08C09D7/61B05D7/14B05D7/24C23C22/43C23C22/42
CPCC09D129/14C09D133/04C09D5/08C09D7/61C09D7/69C09D7/68B05D7/14B05D7/24C23C22/43C23C22/42B05D2202/10C08K2003/2272C08K2003/2268C08K2003/2275C08K2003/329C08K2003/324C08K2003/3045C08K2003/2227C08K2003/2251C08K2003/2244
Inventor 王胜荣杨建炜曹建平高立军
Owner SHOUGANG CORPORATION
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