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Cold galvanizing coating and preparation method thereof

A technology of cold galvanizing and coating, which is applied in the direction of anti-corrosion coatings and coatings, which can solve problems such as deficiencies, coating blister protection, etc., and achieve the effects of improving shielding performance, improving paint film durability, and ensuring electrochemical protection performance

Inactive Publication Date: 2015-06-17
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of cold galvanized paint and its preparation method to improve the quality of the coating in order to overcome the multi-porosity of the existing cold-dip galvanized product coating and cause the problem of coating blistering or insufficient protection

Method used

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  • Cold galvanizing coating and preparation method thereof
  • Cold galvanizing coating and preparation method thereof
  • Cold galvanizing coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033]A kind of preparation method of cold-dip galvanized paint, concrete steps are as follows: add 5.5% PMA solvent and 4.0% modified epoxy resin EPOKEY-868 (Japan Mitsui) in the paint tank with cooling device, stir 10min at 500rpm ;Continue to add 0.15% wetting and dispersing agent BYK-P104, 0.3% defoamer HX-2085 (Huaxia Pentium), 1.0% anti-settling agent A630-20X (Disparon), and stir at 1000rpm for 20min; Add 88.5% zinc powder and 0.3% silane coupling agent γ-glycidyl etheroxypropyl trimethoxysilane (KH-560), increase the speed to 2500rpm, stir at high speed for 30min, after adding zinc powder and surface modification During the stirring of the agent, use circulating water to keep the paint mixing tank cool. After the stirring is completed, reduce the speed to 1500rpm, add 0.15% leveling agent AFCONA-3777, continue stirring for 15 minutes, reduce the speed to 600rpm, stir for 10 minutes, and pack it out. . The corrosion resistance of the obtained film reaches 2400h.

[00...

Embodiment 2

[0036] A kind of preparation method of cold-dip galvanized paint, concrete steps are as follows: add 3% environmental protection solvent sec-butyl acetate and 3% modified epoxy resin EPOKEY-868 (Japan Mitsui) in the paint tank of band cooling device, in Stir at 500rpm for 10min; continue to add 0.05% of wetting and dispersing agent BYK-P104, 0.1% of defoamer HX-2085 (Huaxia Pentium), 0.5% of anti-settling agent A630-20X (Disparon), at 1000rpm Stir for 20 minutes; add 92.15% zinc powder and 1.0% titanate coupling agent tetraisopropyl bis(dilauryl phosphite) titanate, increase the speed to 2500rpm, stir at high speed for 30 minutes, and add zinc powder and surface During the stirring of the modifier, use circulating water to keep the paint mixing tank cool. After the stirring is completed, reduce the speed to 1500rpm, add 0.2% leveling agent, continue stirring for 15 minutes, reduce the speed to 600rpm, stir for 10 minutes, and then pack it out. The corrosion resistance of the o...

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PUM

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Abstract

The invention provides a cold galvanizing coating and a preparation method thereof. The cold galvanizing coating is prepared by the following steps: adding an environment-friendly solvent and modified epoxy resin EPOKEY-868 into a paint mixing tank with a cooling device, and stirring for 5-15 minutes; continuing to add a wetting dispersant, a defoaming agent and an anti-setting agent, and stirring for 20-40 minutes; then adding zinc powder and a surface modifier, increasing the revolving speed and stirring for 30-50 minutes, and in the stirring process, adopting circulating water to keep the paint mixing tank to be cooled; after stirring, adding a flatting agent, and continuing to stir, so as to obtain the product, wherein the zinc powder is formed by mixing granulated zinc powder and flake zinc powder according to the weight ratio of 1:(2-4), and the surface modifier comprises a titanate coupling agent KB-36S, a silane coupling agent KH-560, and sodium dodecyl benzene sulfonate. The galvanizing coating prepared by the preparation method disclosed by the invention is environment-friendly, healthy, high in anti-precipitation performance, good in coating performance, and capable of improving the durability of the paint film; the coating layer is good in electrochemical protection performance.

Description

technical field [0001] The invention relates to a cold-dip galvanized anti-corrosion coating, in particular to a cold-dip galvanized coating prepared by adding a certain amount of flaky Zn powder to a traditional granular zinc powder cold-dip galvanized coating and a preparation method thereof. Background technique [0002] At present, 10% of my country's annual total steel production is corroded. In the world, corroded metals account for 2.5%-4% of total production. Corrosion prevention and environmental protection issues are imminent. For large-scale steel structures, such as transmission towers, most of them are protected by hot-dip galvanizing, but sometimes the galvanized layer will be damaged during the transportation and installation of the steel structure, such as the field transportation of the transmission steel structure, the installation process Due to the mechanical damage and welding damage of the steel structure, the damaged part of the galvanized layer must b...

Claims

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Application Information

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IPC IPC(8): C09D5/10C09D1/00C09D7/12
CPCC09D5/10C09D1/00C09D7/40C09D7/63
Inventor 江社明张启富张劲光张予刘昕李远鹏周凯张杰冯士杰李虎
Owner STATE GRID CORP OF CHINA
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