A kind of high-aluminum-zinc-aluminum-magnesium coating steel plate surface treatment agent and preparation method thereof

A technology of coating steel plate and treating agent, applied in coating, hot-dip galvanizing process, paint containing biocide, etc., can solve the problems of weak anti-oxidation ability, affecting the appearance quality of coating, gray-black and other problems

Active Publication Date: 2022-07-29
立邦(上海)化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The zinc-aluminum-magnesium coating contains more magnesium elements. Magnesium is easy to react with oxidizing gases such as oxygen, water vapor, and carbon dioxide in the air to form a thick magnesium-containing compound layer. This magnesium-containing compound layer belongs to the oxide of magnesium. Or / and the mixture of hydroxide or / and basic carbonate, which is unstable in the early stage of formation and appears gray-black, which seriously affects the appearance quality of the coating
[0006] At present, the water-based surface treatment agents used on hot-dip pure zinc coating (GI), hot-dip galvanized iron coating (GA), electro-galvanized coating (EG) and aluminum-zinc coating (GL) are relatively mature, but due to the limitations of these surface treatment agents The anti-oxidation ability is weak, so it cannot be used on zinc-aluminum-magnesium-coated steel sheets, which will obviously affect the blackening resistance of the product

Method used

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  • A kind of high-aluminum-zinc-aluminum-magnesium coating steel plate surface treatment agent and preparation method thereof
  • A kind of high-aluminum-zinc-aluminum-magnesium coating steel plate surface treatment agent and preparation method thereof
  • A kind of high-aluminum-zinc-aluminum-magnesium coating steel plate surface treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] At room temperature, add deionized water to the reactor, add water-based polyurethane resin while stirring, and stir for 15 minutes; then add water-based ethylene acrylic acid copolymer while stirring, and stir for 15 minutes; then add silane coupling agent while stirring, and stir for 75 minutes ; Add oxazoline polymer while stirring, stir for 25min; add water-based hindered phenol antioxidant, stir for 30min; water-based epoxy ether polymer, stir for 15min; water-based oxidized polyethylene wax, stir for 20min; The treatment agent for the high-aluminum zinc-aluminum-magnesium plated steel sheet.

Embodiment 2

[0048] At room temperature, add deionized water to the reactor, add water-based polyurethane resin while stirring, and stir for 15 minutes; then add water-based ethylene acrylic acid copolymer while stirring, and stir for 15 minutes; then add silane coupling agent while stirring, and stir for 60 minutes ; Add oxazoline polymer while stirring, stir for 15min; add water-based hindered phenol antioxidant, stir for 15min; water-based epoxy ether polymer, stir for 30min; water-based oxidized polyethylene wax, stir for 30min; Treatment agent for high-aluminum-zinc-aluminum-magnesium coated steel sheets.

Embodiment 3

[0050] At room temperature, add deionized water to the reactor, add water-based polyurethane resin while stirring, and stir for 15 minutes; then add water-based ethylene acrylic acid copolymer while stirring, and stir for 15 minutes; then add silane coupling agent while stirring, and stir for 90 minutes Add oxazoline polymer while stirring, stir for 30min; add water-based hindered phenol antioxidant, stir for 15min; water-based epoxy ether polymer, stir for 15min; water-based oxidized polyethylene wax, stir for 15min; Treatment agent for high-aluminum-zinc-aluminum-magnesium coated steel sheets.

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Abstract

A kind of high-aluminum zinc-aluminum-magnesium-coated steel sheet surface treatment agent and a preparation method thereof, wherein the high-aluminum zinc-aluminum-magnesium coated steel sheet surface treatment agent comprises the following components by weight:

Description

technical field [0001] The invention relates to a metal plate surface treatment agent, in particular to a steel plate surface treatment agent with a high aluminum zinc aluminum magnesium coating and a preparation method thereof. Background technique [0002] With the development of steel materials and coating technology, people have put forward higher requirements for the corrosion resistance of coated steel, and the traditional hot-dip galvanized coated (pure zinc coated) steel can no longer meet the application requirements. The 55% Al-Zn, Zn-5% Al and zinc-aluminum-magnesium (Zn-Al-Mg) coatings with high corrosion resistance have become the focus of the development of coating materials. In particular, the Zn-Al-Mg coating has the characteristics of high corrosion resistance and port corrosion resistance protection, and has become the best choice for the current coating steel plate. [0003] Zinc-aluminum-magnesium coated steel plate has super corrosion resistance, wear r...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D123/08C09D5/08C09D7/65C09D5/16C23C2/26
CPCC09D175/04C09D5/08C09D5/1687C23C2/26C08L2205/035C08L23/0869C08L33/00C08L23/30C08K5/5435C08K5/13
Inventor 黄高峰张丽华刘学忙许容钱臣彭栋鑫
Owner 立邦(上海)化工有限公司
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