Surface treatment liquid for zinc-aluminum-magnesium alloy steel plate as well as preparation method and use method of surface treatment liquid

A surface treatment liquid, zinc-aluminum-magnesium technology, applied in metal material coating process, coating, polyurea/polyurethane coatings, etc., can solve the problem that the quality of silane coupling agent products cannot be guaranteed, and there is no excellent blackening resistance. Environmental protection surface coating and other issues to achieve the effect of improving corrosion resistance

Pending Publication Date: 2022-03-04
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silane coupling agents are generally hydrolyzed under certain conditions (acidic, alkaline or neutral), and the conditions are not specified in this patent document, which cannot guarantee the function of silane coup

Method used

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  • Surface treatment liquid for zinc-aluminum-magnesium alloy steel plate as well as preparation method and use method of surface treatment liquid
  • Surface treatment liquid for zinc-aluminum-magnesium alloy steel plate as well as preparation method and use method of surface treatment liquid
  • Surface treatment liquid for zinc-aluminum-magnesium alloy steel plate as well as preparation method and use method of surface treatment liquid

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] 1. Preparation method and application method of zinc-aluminum-magnesium alloy steel plate surface treatment liquid

[0026] 1. Preparation method of zinc-aluminum-magnesium alloy steel plate surface treatment liquid

[0027] Weigh each component according to the content of each component in the zinc-aluminum-magnesium alloy steel plate surface treatment solution in Table 1, dissolve the alkaline corrosion inhibitor and zirconium salt in water, then add the silane coupling agent, then add the aqueous organic emulsion, and wait until After hydrolysis is completed, add water-based lubricant, and finally add surfactant, stir for 30 minutes and leave it alone.

[0028] 2. How to use surface treatment liquid for zinc-aluminum-magnesium alloy steel sheet

[0029] Roll coating the prepared zinc-aluminum-magnesium alloy steel sheet surface treatment solution on 1.5%Al-1.5%Mg-Zn hot-dip galvanized aluminum-magnesium alloy coated steel sheet respectively, and solidify at 90°C for...

Embodiment 7

[0035] In Example 7, different from Example 1, the silane coupling agent is 3-aminopropyltriethoxysilane.

Embodiment 8

[0036] In Example 8, different from Example 1, the alkaline corrosion inhibitor is sodium metavanadate.

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Abstract

The invention belongs to the technical field of zinc-aluminum-magnesium alloy coated steel plates, and particularly relates to a zinc-aluminum-magnesium alloy coated steel plate surface treatment liquid and a preparation method and a use method thereof. The invention firstly provides a zinc-aluminum-magnesium alloy coated steel plate surface treatment liquid which comprises the following components in parts by weight based on 100 parts by weight of water: 5-20 parts by weight of silane coupling agent, 0.5-10 parts by weight of alkaline corrosion inhibitor, 1-10 parts by weight of zircon salt, 5-20 parts by weight of water-based lubricant, 15-35 parts by weight of water-based organic emulsion and 0.1-2.0 parts by weight of surfactant. The steel plate surface treatment liquid is suitable for a zinc-aluminum-magnesium steel plate with coating components of 0.5-6% of Al and 0.2-3.0% of Mg, an environment-friendly coating on the zinc-aluminum-magnesium surface can be compact and uniform, the coating is prevented from making contact with water vapor and oxygen in the environment, the corrosion resistance, blackening resistance, water resistance, fingerprint resistance, coatability and self-lubricating performance of the surface coating are remarkably improved, and the service life of the surface coating is prolonged. And the use requirements of stamping and coating of users are met.

Description

technical field [0001] The invention belongs to the technical field of zinc-aluminum-magnesium alloy coated steel sheets, and in particular relates to a surface treatment liquid for zinc-aluminum-magnesium alloy coated steel sheets and a preparation method and application method thereof. Background technique [0002] Zinc-aluminum-magnesium alloy coated steel sheet has very excellent corrosion resistance (corrosion resistance under paint film, flat corrosion resistance and cut protection), and also has good formability, weldability and coating performance, replacing hot-dip galvanized sheet , hot-dip galvanized panels, and hot-dip galvanized aluminum panels are becoming more and more obvious. [0003] The existing hot-dip galvanized aluminum-magnesium alloy coated steel sheets can be divided into "low aluminum" (WAl<5%), "medium aluminum" (5%≤WAl<13%) and "high aluminum" (47%≤WAl≤57% %) three types. With the increase of Al and Mg content, the corrosion resistance of ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D133/04C09D125/14C09D5/08C09D7/63C23C2/06C23C2/26
CPCC09D175/04C09D143/04C09D125/14C09D5/08C09D7/63C23C2/26C23C2/06C08L43/04C08K5/544C08K3/24C08K5/42
Inventor 董学强冉长荣郭太雄徐接旺宋裕
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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