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Special chromium-free fingerprint resistant liquid for zinc-aluminum-magnesium coated steel plate and preparation method of special chromium-free fingerprint resistant liquid

A technology for coating steel plates, zinc-aluminum-magnesium, applied in coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve problems affecting product corrosion resistance, blackening resistance, etc.

Inactive Publication Date: 2017-12-01
SHANGHAI XINGYU ECOSIL SURFACE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the chromium-free passivation products used on hot-dip pure zinc GI steel plate, GA zinc-iron alloy coating, Galvalume high-aluminum-zinc coating and Galfan zinc-aluminum alloy coating are relatively mature, but they cannot be directly used on zinc-aluminum-magnesium coating products. It affects the corrosion resistance and blackening resistance of the product, so it is necessary to develop a special chrome-free anti-fingerprint liquid for zinc-aluminum-magnesium coated steel sheets

Method used

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  • Special chromium-free fingerprint resistant liquid for zinc-aluminum-magnesium coated steel plate and preparation method of special chromium-free fingerprint resistant liquid
  • Special chromium-free fingerprint resistant liquid for zinc-aluminum-magnesium coated steel plate and preparation method of special chromium-free fingerprint resistant liquid
  • Special chromium-free fingerprint resistant liquid for zinc-aluminum-magnesium coated steel plate and preparation method of special chromium-free fingerprint resistant liquid

Examples

Experimental program
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Embodiment Construction

[0024] Manufacture the special chrome-free anti-fingerprint liquid of the zinc-aluminum-magnesium coated steel sheet according to the following steps: add deionized water in the reaction kettle under normal temperature; then add gamma-aminopropyl triethoxysilane and gamma-mercapto Propyltrimethoxysilane, stirring for 0.5-1.0h; adding water-based modified acrylic resin, stirring for 0.5-1.0h; adding water-based acrylic aliphatic polyurethane copolymer, stirring for 0.5-1.0h; adding zinc dihydrogen phosphate and magnesium oxide, Stir for 0.5-1.0h; add aqueous polyethylene wax dispersion, stir for 0.5-1.0h; add deionized water again, and stir for 1-2h. Wherein the component distribution ratio of each embodiment is shown in Table 1.

[0025] Table 1 (number of parts by mass)

[0026]

[0027] It should be understood that, in Example 1-6, the conductivity of the deionized water is ≤4.5 μs / cm.

[0028] Table 2 shows the preparation process parameters of each chromium-free anti-...

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Abstract

The invention discloses a special chromium-free fingerprint resistant liquid for a zinc-aluminum-magnesium coated steel plate and a preparation method of the special chromium-free fingerprint resistant liquid. The special chromium-free fingerprint resistant liquid comprises the following components in parts by mass: 10-20 parts of a silane coupling agent, 10-20 parts of an aqueous acrylic resin, 10-20 parts of a waterborne polyurethane resin, 1-10 parts of a metal compound, 1-10 parts of lubrication aids and 30-60 parts of deionized water. The special chromium-free fingerprint resistant liquid disclosed by the invention is an environment-friendly product and is excellent in comprehensive property such as corrosion resistance, yellowing resistance, fingerprint resistance and blackening resistance.

Description

technical field [0001] The invention relates to a composition and a preparation method thereof, in particular to a special chrome-free anti-fingerprint liquid for zinc-aluminum-magnesium coated steel sheets and a preparation method thereof. Background technique [0002] It is well known that hot-dip galvanized steel sheets have good corrosion resistance, formability, weldability and paintability. Hot-dip galvanized steel sheets are widely used in the fields of construction, home appliances and automobile manufacturing, because the galvanized layer is easy to corrode in a humid environment , blackening, so after galvanizing, oiling or passivation is generally adopted to improve the corrosion resistance and blackening resistance of the steel plate. However, oiling will cause subsequent cleaning troubles, and has been gradually replaced by chromium-free passivation. [0003] In recent years, many studies have found that the corrosion resistance of alloy-coated steel sheets com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D175/14C09D5/08C09D7/12
CPCC09D133/00C08K2003/222C08K2003/321C08L2205/03C09D5/08C09D175/14C08L75/14C08L23/06C08K13/02C08K5/544C08K5/548C08K3/22C08K3/32C08L33/00
Inventor 曹静娟陆海涛朱丹青俞威
Owner SHANGHAI XINGYU ECOSIL SURFACE MATERIAL