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Preparation methods of coating solution with high corrosion resistance and hot-dipped aluminum-zinc plate with finger resistance

A coating liquid, high corrosion resistance technology, applied in the direction of coating, metal material coating process, anti-corrosion coating, etc. The effect of stability

Active Publication Date: 2015-11-18
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the self-lubricating treatment agent composition prepared by it that can be used for hot-dip galvanized plates does not contain chromium, its corrosion resistance is tested according to the methods and conditions specified in the GB / T10125-1997 standard, and then according to GB12335- The regulations of 90 evaluate the corrosion of the galvanized sheet, and the percentage of the corrosion area to the total area is calculated by 72 hours. Phenomenon

Method used

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  • Preparation methods of coating solution with high corrosion resistance and hot-dipped aluminum-zinc plate with finger resistance

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preparation example Construction

[0035] The preparation method of the above-mentioned high-corrosion-resistant coating liquid is firstly dissolving chromic anhydride in water, then adding phosphate, after dissolving, adding oxo acid salt, then adding a pH regulator, and adjusting the pH to 8-11 Add colloidal silicon dioxide, and finally add water-based organic resin emulsion, and stir evenly to obtain the high corrosion resistance coating liquid of the present invention. In the present invention, the pH is adjusted to 8-11 to ensure the stability of the coating liquid, because the coating liquid contains chromate, and the chromate will automatically oxidize organic matter under acidic conditions, reducing the stability of the coating liquid , forming adverse phenomena such as coagulation and discoloration, in order to avoid these adverse phenomena, it needs to be prepared in an alkaline environment.

[0036] The preparation method of the hot-dip aluminum-zinc anti-fingerprint plate of the present invention co...

Embodiment 1

[0043] 1. Preparation of high-corrosion-resistant coating solution and heat transfer aluminum-zinc anti-fingerprint board

[0044] 1. Preparation of high corrosion resistance coating solution:

[0045] First weigh each component according to the content of each component of the high corrosion resistance coating solution in Table 1, then dissolve chromic anhydride in water, then add phosphate, add oxo acid salt after dissolving, then add pH regulator, Adjust the pH to 8-11, then add colloidal silicon dioxide, and finally add water-based organic resin emulsion, and stir evenly to obtain the high corrosion-resistant coating liquid prepared by the present invention.

[0046] 2. Preparation of hot-dip galvanized anti-fingerprint board:

[0047] Include the following steps:

[0048] a, prepare the hot-dip galvanized sheet substrate by conventional methods;

[0049] B, roll coating or spray coating liquid on the hot-dip galvanized sheet substrate prepared in a step; The coating li...

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Abstract

The invention relates to a coating solution with high corrosion resistance, a preparation method thereof as well as a preparation method of a hot-dipped aluminum-zinc plate with finger resistance. The coating solution with the high corrosion resistance comprises following components in terms of 100 parts by weight of water serving as a standard: 0.3-4 parts by weight of chromic anhydride, 2-6 parts by weight of phosphate, 0.1-10 parts by weight of a pH regulator, 0.1-25 parts by weight of oxysalt, 5-20 parts by weight of colloidal silicon dioxide and 5-30 parts by weight of a water-based organic resin emulsion. The prepared coating solution with high corrosion resistance has good stability, and the hot-dipped aluminum-zinc plate has excellent performance such as corrosion resistance, finger resistance, heat resistance, water resistance, absorbability and the like after being coated with the coating solution, has low cost and can meet the requirement of an electric control cabinet, the construction industry and the like for the hot-dipped aluminum-zinc plate.

Description

technical field [0001] The invention specifically relates to a high-corrosion-resistant coating solution and a preparation method thereof, and a preparation method of a hot-dip galvanized anti-fingerprint board. 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 products on the surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D175/04C09D5/08C09D7/12C23C22/33
Inventor 董学强郭太雄徐权岳安宏冉长荣
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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