Aluminized steel plate with photo-catalytic activity and excellent corrosion resistance and manufacturing method thereof

A technology of photocatalytic activity and corrosion resistance, applied in chemical instruments and methods, separation methods, anti-corrosion coatings, etc. effect of corrosion

Inactive Publication Date: 2019-11-01
MAANSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing photocatalytic activity of aluminized steel plate is limited by light energy conditions, and it does not have the ability to eliminate NO in the air X problem, the present invention provides an aluminized steel sheet with photocatalytic activity and excellent corrosion resistance, on the one hand, it improves the corrosion resistance of the aluminized steel sheet and prolongs its service life; It has photocatalytic performance under the irradiation of internal light source, and has excellent functions of eliminating and killing nitrogen oxides, organic gases and fungi in the air

Method used

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  • Aluminized steel plate with photo-catalytic activity and excellent corrosion resistance and manufacturing method thereof
  • Aluminized steel plate with photo-catalytic activity and excellent corrosion resistance and manufacturing method thereof
  • Aluminized steel plate with photo-catalytic activity and excellent corrosion resistance and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Such as figure 1 As shown, an aluminized steel sheet 1 with photocatalytic activity and excellent corrosion resistance in Example 1 has: a transparent, translucent or colored passivation film 2 on at least one surface of the aluminized steel sheet 1, laminated A transparent film layer 3 on the surface of the passivation film 2, and a photocatalytic coating 4 laminated on the transparent film layer 3, wherein the transparent film layer 3 contains a silane coupling agent and a silicon modified resin, and the photocatalytic coating 4 contains nitrogen Doped modified titanium dioxide visible light-responsive photocatalytic particles.

[0051] In this embodiment, the hot-dip aluminized steel sheet 1 has a thickness of 0.25 mm and a surface roughness Ra of 0.6 μm.

[0052] As shown in Table 1, the passivation film 2 is formed by applying the inorganic-organic composite passivation solution (a-1) to the surface of the aluminum-plated steel plate 1 and drying and curing, and t...

Embodiment 2

[0063] Basically the same as in Example 1, the hot-dip aluminized steel sheet 1 has a thickness of 3.0 mm and a surface roughness Ra of 2.0 μm.

[0064] As shown in Table 3, the passivation film 2 is formed by applying the inorganic-organic composite passivation solution (a-1) to the surface of the aluminum-plated steel plate 1 and drying and curing, and the inorganic-organic composite passivation solution (a-1 ) is made up of 15% organic film-forming substance and 85% inorganic film-forming substance, and described organic film-forming substance is that mass fraction is 15% polyolefin wax emulsion; Described inorganic film-forming substance comprises that mass fraction is 5% nanometer dioxide Silica sol, fluozirconic acid with a mass fraction of 5%, phosphoric acid with a mass fraction of 5%, sodium metavanadate with a mass fraction of 5%, and water with a mass fraction of 65%.

[0065] Table 3 Inorganic-organic composite passivation solution (a-1) composition (%)

[0066] ...

Embodiment 3

[0075] In this embodiment, the hot-dip aluminized steel sheet 1 has a thickness of 2.0 mm and a surface roughness Ra of 1.5 μm.

[0076] As shown in Table 1, the passivation film 2 is formed by applying the inorganic-organic composite passivation solution (a-1) to the surface of the aluminum-plated steel plate 1 and drying and curing, and the inorganic-organic composite passivation solution (a-1 ) is made up of 12% organic film-forming substance and 88% inorganic film-forming substance, and described organic film-forming substance is that mass fraction is 12% polyolefin wax emulsion; Described inorganic film-forming substance comprises that mass fraction is 5% nanometer dioxide Silica sol, fluozirconic acid with a mass fraction of 10%, phosphoric acid with a mass fraction of 15%, sodium metavanadate with a mass fraction of 5%, and water with a mass fraction of 53%.

[0077] Table 5 Inorganic-organic composite passivation solution (a-1) composition (%)

[0078]

[0079] The...

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Abstract

The invention discloses an aluminized steel plate with photo-catalytic activity and excellent corrosion resistance and a manufacturing method thereof, and belongs to the technical field of hot-dip steel plates. The aluminized steel plate is characterized in that at least one surface of an aluminized steel plate has: a transparent, translucent or colored passivation skin film, a transparent covering film layer laminated on the surface of the passivation skin film, and a photo-catalytic coating layer laminated on the transparent covering film layer, wherein the transparent covering film layer contains a silane coupling agent and a silicon-modified resin, and the photo-catalytic coating layer contains nitrogen-doped modified titanium dioxide visible light-responsive photo-catalytic particles.The method uses the aluminized steel plate as a substrate to prepare a visible light-responsive photo-catalytic haze-causing substance eliminating material by using a roll coating process, on the onehand, corrosion resistance of the aluminized steel plate is improved, and a service life of the aluminized steel plate is prolonged; and on the other hand, the aluminized steel plate has excellent elimination and killing functions for nitrogen oxides, organic gases and bacteria in the air.

Description

technical field [0001] The invention belongs to the technical field of hot-dip coated steel sheets, and more specifically relates to an aluminum-coated steel sheet with photocatalytic activity and excellent corrosion resistance and a manufacturing method thereof. Background technique [0002] The research results show that the emission of nitrogen oxides (NOx) produced in the process of energy use is the internal cause of severe smog: after NOx is discharged into the atmosphere, due to the low valence state, complex oxidation occurs under the oxidation of free radicals in the atmosphere. Chemical reaction produces high-valence nitrates. Therefore, NOx is the key pollutant that enhances the oxidation of the atmosphere and is also the main component of PM2.5 (smog). [0003] In order to eliminate nitrogen oxides, environmentally harmful gases and sterilize bacteria, those skilled in the art have researched and developed various functional materials prepared by various photocat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D131/04C09D171/00C09D5/08C09D7/63C09D7/65C09D127/18C09D7/61C23C22/40B01D53/74B01D53/86B01D53/60
CPCB01D53/74B01D53/8637B01D2255/802B01D2257/91B01D2259/804C08K2003/2241C08K2201/011C08L2201/10C08L2205/025C08L2205/03C09D5/08C09D127/18C09D131/04C09D163/00C09D171/00C23C22/40C09D7/61C09D7/63C09D7/65C08L31/04C08K5/42C08K5/5425C08K3/22C08L75/04C08K5/521C08L63/00Y02A50/20
Inventor 赵云龙王滕杨兴亮柴立涛张建刘劼李伟刚张百勇孙镕强何峰
Owner MAANSHAN IRON & STEEL CO LTD
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