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Chromium-free fingerprint-resistant coating solution and preparation method of hot-dip aluminizing zinc plate

A coating liquid, anti-fingerprint technology, used in coatings, anti-corrosion coatings, conductive coatings, etc., can solve the problems of hot-dip aluminum-zinc plate corrosion, aluminum-zinc plate corrosion, etc., and achieve good stability and good heat resistance. Effect

Active Publication Date: 2015-11-11
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

The self-lubricating treatment agent composition prepared by it that can be used for hot-dip galvanized plate does not contain chromium, but its corrosion resistance is tested according to the method and conditions specified in the GB / T10125-1997 standard, and then according to the GB12335-90 It is stipulated to evaluate the corrosivity of the galvanized sheet. The percentage of the corrosion area to the total area is calculated by 72h, and its corrosion resistance is still ≥ 1%. After 120 hours, serious corrosion appeared on the surface of the hot-dip galvanized sheet

Method used

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  • Chromium-free fingerprint-resistant coating solution and preparation method of hot-dip aluminizing zinc plate
  • Chromium-free fingerprint-resistant coating solution and preparation method of hot-dip aluminizing zinc plate

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preparation example Construction

[0040] The preparation method of the chromium-free anti-fingerprint coating liquid of the present invention, at first dissolving phosphate in water, then adding molybdate, after being dissolved, adding nitrite, then adding a pH regulator, adjusting the pH to 7-10 , the present invention adjusts the pH value to 7-10 in order to improve the stability of the coating liquid. Then add colloidal silicon dioxide, and finally add water-based organic resin emulsion, and stir evenly to obtain the product.

[0041] The preparation method of hot-dip aluminum-zinc plate of the present invention comprises the following steps:

[0042] a. The hot-dip galvanized sheet substrate can be prepared by conventional methods;

[0043] B, roll coating or spray coating liquid on the hot-dip galvanized sheet substrate prepared in step a; the coating liquid is the chrome-free anti-fingerprint coating liquid described in any one of claims 1 to 8;

[0044] c. curing the substrate coated with the coating ...

Embodiment 1

[0049] 1. Preparation of chrome-free anti-fingerprint coating solution and heat transfer aluminum-zinc plate

[0050] 1. Preparation of chrome-free anti-fingerprint coating solution:

[0051] First, weigh each component according to the content of each component of the chromium-free fingerprint-resistant coating solution in Table 1, first dissolve the phosphate in water, then add molybdate, after dissolving, add nitrite, and then add pH adjuster , adjust the pH to 7-10, then add colloidal silicon dioxide, and finally add water-based organic resin emulsion, and stir evenly to obtain the chrome-free anti-fingerprint coating liquid prepared by the present invention.

[0052] 2. Preparation of hot-dip galvanized sheet:

[0053] It mainly includes the following steps:

[0054] a, prepare the hot-dip galvanized sheet substrate by conventional methods;

[0055] B, roll coating or spray coating liquid on the hot-dip galvanized sheet substrate prepared in step a; the coating liquid ...

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Abstract

The invention belongs to the field of metal surface treatment materials, and particularly relates to a chromium-free fingerprint-resistant coating solution and a preparation method of a hot-dip aluminizing zinc plate. The coating solution is composed of the following components in parts by weight: 0.3-3 parts of phosphate, 0.6-6 parts of molybdate, 0.9-9 parts of nitrite, 0.1-5 parts of pH regulator, 5-25 parts of colloidal silicon dioxide and 10-40 parts of water-based organic resin emulsion. The weight ratio of the phosphate, molybdate and nitrite is 1:(1.5-2):(2.5-3). After being used for the hot-dip aluminizing zinc plate, the chromium-free fingerprint-resistant coating solution has the advantages of favorable corrosion resistance, favorable fingerprint resistance and environment friendliness, and can satisfy the requirements for home appliances, IT (information technology) and other industries.

Description

technical field [0001] The invention belongs to the field of metal surface treatment materials, and in particular relates to a preparation method of a chrome-free anti-fingerprint coating solution and a hot-dip aluminum-zinc plate. Background technique [0002] At present, metal products represented by aluminum alloys are widely used in household appliances, automobiles, construction and other industries, but when aluminum alloys are used in humid, industrial gas, fuel gas, salt and dust atmospheres, etc. corrosion, crevice corrosion, stress corrosion and corrosion fatigue. The surface treatment of aluminum alloy is the key to expanding its application range and prolonging its service life, so various corrosion-resistant and fingerprint-resistant coating fluids for alloy surface treatment have emerged as the times require. [0003] Among them, the hot-dip galvanized high corrosion resistance and anti-fingerprint plate is made by coating a layer of high value-added film prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D133/00C09D125/14C09D161/06C09D175/04C09D163/00C09D5/08C09D5/24C09D7/12
Inventor 郭太雄董学强冉长荣向安平张爱萍岳安宏
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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