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Water-based fingerprint-resistant coating with interpenetrating network structure for galvanized steel sheet

A technology of interpenetrating network structure and galvanized steel sheet, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of discoloration and peeling of the film, improve the density, reduce the steric hindrance, and improve the salt spray resistance. Effect

Pending Publication Date: 2022-03-25
蓝帆新材料技术(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of cleaning with degreasing agent, the surface of galvanized steel sheet is prone to problems such as discoloration and peeling of the film

Method used

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  • Water-based fingerprint-resistant coating with interpenetrating network structure for galvanized steel sheet
  • Water-based fingerprint-resistant coating with interpenetrating network structure for galvanized steel sheet
  • Water-based fingerprint-resistant coating with interpenetrating network structure for galvanized steel sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A water-based anti-fingerprint coating for galvanized steel sheets with an interpenetrating network structure, comprising 15% of water-based polyurethane resin, 25% of water-based acrylic resin, 1% of silane coupling agent, 1% of silica sol, 0.1% of wetting agent, leveling 0.1% of the agent, 0.5% of the polyethylene wax dispersion, and the rest is water. Under this component distribution ratio, the structural composition of water-based polyurethane resin and water-based acrylic resin is shown in Table 1 below.

[0035]

[0036]

[0037] Table 1

Embodiment 2

[0039] A water-based anti-fingerprint coating for galvanized steel sheets with an interpenetrating network structure, comprising 25% of water-based polyurethane resin, 15% of water-based acrylic resin, 3% of silane coupling agent, 3% of silica sol, 0.3% of wetting agent, leveling 0.3% of the agent, 2.5% of the polyethylene wax dispersion, and the rest is water. Under this component distribution ratio, the structural composition of water-based polyurethane resin and water-based acrylic resin is shown in Table 2 below.

[0040]

[0041] Table 2

Embodiment 3

[0043] A water-based anti-fingerprint coating for galvanized steel sheets with an interpenetrating network structure, including 30% water-based polyurethane resin, 20% water-based acrylic resin, 5% silane coupling agent, 5% silica sol, 0.5% wetting agent, leveling Agent 0.5%, polyethylene wax dispersion 5%, the rest is water. Under this component distribution ratio, the structural composition of water-based polyurethane resin and water-based acrylic resin is shown in Table 3 below.

[0044]

[0045]

[0046] table 3

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Abstract

The invention provides a water-based fingerprint-resistant coating with an interpenetrating network structure for a galvanized steel sheet. The water-based fingerprint-resistant coating comprises 25-50% of a film-forming substance, 1-5% of a silane coupling agent, 1-5% of silica sol, 0.1-0.5% of a wetting agent, 0.1-0.5% of a leveling agent, 0.5-5% of a polyethylene wax dispersion and the balance of water, the film forming substance is formed by mixing water-based polyurethane resin with a linear structure and water-based acrylic resin with a net structure, or the film forming substance is formed by mixing water-based acrylic resin with a linear structure and water-based polyurethane resin with a net structure, and in the film forming substance, the ratio of water-based polyurethane resin to water-based acrylic resin is about 1: 2-2: 1. By mixing the polyurethane resin with the linear structure and the acrylic resin with the net structure or mixing the acrylic resin with the linear structure and the polyurethane resin with the net structure, the steric hindrance effect between the resins is reduced, an interpenetrating network structure of the linear structure and the net structure is formed, the compactness of the film layer is greatly improved, and the film layer is more compact. The performance indexes of salt fog resistance, acid and alkali resistance, solvent resistance, water resistance and the like of the fingerprint-resistant film layer are improved.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a water-based anti-fingerprint coating for galvanized steel sheets with an interpenetrating network structure. Background technique [0002] Galvanized steel sheets are widely used in automobiles, building materials, home appliances and electromechanical industries, but the zinc on the surface of metal materials is easily corroded or white rusted in the atmosphere, which affects the appearance of metal materials and causes adverse effects such as poor coating performance. In order to improve the corrosion resistance and coating adhesion of galvanized steel sheets, the industry uses a treatment solution containing chromic acid, dichromic acid or its salts to treat the metal surface, which is commonly referred to as chromium treatment. [0003] However, with the continuous improvement of domestic environmental awareness in recent years, chromium treatment has been g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D175/08C09D7/61
CPCC09D133/066C09D175/08C09D7/61C08L75/08C08K3/36C08L33/066
Inventor 侯伟
Owner 蓝帆新材料技术(广州)有限公司
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