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Stain resistant environment-friendly color-coated sheet

An anti-staining and color-coated board technology, applied in the field of materials, can solve the problems of reducing the weather resistance and stain resistance of polyvinylidene fluoride, affecting the anti-corrosion period, and the effect is not significant, so as to ensure the anti-staining and anti-staining properties. Weather resistance, excellent performance, and the effect of improving overall performance

Active Publication Date: 2015-10-28
扬子江新型材料(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion between polyvinylidene fluoride coatings and metals is poor. Generally, it needs to be modified by propylene-based resin before use, but the effect is not significant, and it reduces the excellent weather resistance and anti-staining properties of polyvinylidene fluoride. Pollution, which affects its anti-corrosion life

Method used

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  • Stain resistant environment-friendly color-coated sheet
  • Stain resistant environment-friendly color-coated sheet

Examples

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Effect test

example 1

[0027] A color-coated board with high stain resistance and high weather resistance and environmental protection, which includes: a substrate, the upper surface of the substrate is sequentially provided with a first chemical passivation layer, a low-fluorine undercoat, and a high-fluorine topcoat. The lower surface of the substrate is sequentially provided with a second chemical passivation layer and a back coating layer from top to bottom;

[0028] Wherein, the substrate is a galvanized steel sheet, and the galvanized layer of the steel sheet also includes 2wt% aluminum;

[0029] The high fluorine top coat includes 3wt% 1,4-butanediol, 1wt% silicon dioxide, 1wt% aluminum oxide, and 95wt% polyvinylidene fluoride, wherein the high fluorine top coat The thickness is 20μm;

[0030] The low-fluorine primer layer includes 15wt% 4-hydroxybutyl vinyl ether, 10% polyvinyl alcohol, and 75wt% polyvinylidene fluoride, wherein the low-fluorine primer layer has a thickness of 10 μm;

[00...

example 2

[0034] A color-coated board with high stain resistance and high weather resistance and environmental protection, which includes: a substrate, the upper surface of the substrate is sequentially provided with a first chemical passivation layer, a low-fluorine undercoat, and a high-fluorine topcoat. The lower surface of the substrate is sequentially provided with a second chemical passivation layer and a back coating layer from top to bottom;

[0035] Wherein, the substrate is a galvanized steel sheet, and the galvanized layer of the steel sheet also includes 5wt% aluminum;

[0036] The high fluorine top coat includes 5wt% 1,4-butanediol, 2wt% silicon dioxide, 3wt% aluminum oxide, and 90wt% polyvinylidene fluoride, wherein the high fluorine top coat The thickness is 25 μm;

[0037] The low-fluorine primer layer includes 25wt% 4-hydroxybutyl vinyl ether, 20% polyvinyl alcohol, and 55wt% polyvinylidene fluoride, wherein the low-fluorine primer layer has a thickness of 15 μm;

[0...

example 3

[0041] A color-coated board with high stain resistance and high weather resistance and environmental protection, which includes: a substrate, the upper surface of the substrate is sequentially provided with a first chemical passivation layer, a low-fluorine undercoat, and a high-fluorine topcoat. The lower surface of the substrate is sequentially provided with a second chemical passivation layer and a back coating layer from top to bottom;

[0042] Wherein, the substrate is a galvanized steel sheet, and the galvanized layer of the steel sheet also includes 3wt% aluminum;

[0043] The high fluorine top coat includes 4wt% 1,4-butanediol, 2wt% silicon dioxide, 2wt% aluminum oxide, and 92wt% polyvinylidene fluoride, wherein the high fluorine top coat The thickness is 22μm;

[0044] The low-fluorine primer layer includes 20 wt% 4-hydroxybutyl vinyl ether, 15% polyvinyl alcohol, and 65 wt% polyvinylidene fluoride, wherein the low-fluorine primer layer has a thickness of 12 μm;

[...

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Abstract

The invention provides a stain resistant environment-friendly color-coated sheet, comprising a substrate, a chemical passivation layer, a low fluorine base coat, a high fluorine surface coat and a back coat, wherein the substrate is a steel plate and the surface of the steel plate is coated with a zinc layer; the high fluorine surface coat comprises 3-5wt% of 1,4-butanediol, 1-2wt% of silicon dioxide, 1-3wt% of aluminium oxide and 90-95wt% of polyvinylidene fluoride; the low fluorine base coat comprises 15-25wt% of 4-hydroxybutyl vinyl ether, 10-20wt% of polyvinyl alcohol and 55-75wt% of polyvinylidene fluoride; the chemical passivation layer comprises 25-30wt% of molybdate, 45-50wt% of organic fluorine modified epoxide resin, 5-7wt% of zirconium nitrate, 10-15wt% of phosphoric acid and 5-15wt% of silicon dioxide. The color-coated sheet prepared by the invention is high in stain resistance and weather fastness, and the surface coat is excellent in adhesion force.

Description

technical field [0001] The invention relates to the field of material technology. More specifically, the present invention relates to a highly weather-resistant chrome-free environment-friendly color-coated plate with strong stain resistance and long service life. Background technique [0002] Color-coated steel plate is color-coated steel plate, which is based on cold-rolled steel plate and galvanized steel plate, after surface pretreatment (degreasing, cleaning, chemical conversion treatment), and coating in a continuous method (roller coating method), after Products made by baking and cooling. Coated steel plate has light weight, beautiful appearance and good anti-corrosion performance, and can be processed directly. It provides a new type of raw material for the construction industry, shipbuilding industry, vehicle manufacturing industry, furniture industry, electrical industry, etc., and plays a role in replacing steel with steel. wood, efficient construction, energy ...

Claims

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Application Information

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IPC IPC(8): C23C28/00C23C22/42C09D127/16C09D7/12C09D129/04C09D133/12
Inventor 杨建仁许曲锋周丹张林元
Owner 扬子江新型材料(苏州)有限公司
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