Acrylic polyurethane silicofluoride coating as well as preparation method and application method thereof

A technology of acrylic polyurethane and fluorine siliconization, which is applied in polyurea/polyurethane coatings, anti-corrosion coatings, anti-fouling/underwater coatings, etc., to achieve good anti-tarnish performance, good long-term protection performance, and excellent adhesion.

Active Publication Date: 2014-09-03
湖南惠电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies of the prior art, to provide a fluorosilicified acrylic polyurethane coating and its preparation and application method, the fluorosilicified acrylic polyurethane coating can improve the protection ability of steel structures, and has good anti-aging and anti-scratch Anti-scratch, anti-corrosion, anti-discoloration, anti-pollution, etc., when used with other excellent primers and primers, it can achieve excellent long-term protection performance on steel structures, and the protection life can reach 30 years

Method used

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  • Acrylic polyurethane silicofluoride coating as well as preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] A kind of fluorine siliconized acrylic polyurethane coating of the present embodiment comprises the raw material of following percentage by weight:

[0075] Hydroxy Acrylic Resin 52%

[0076] Solvent 20%

[0077] Fluorine micropowder 0.2%

[0078] Pigment 5%

[0079] High hardness oxide 3%

[0080] Auxiliary 2.8%

[0081] Blocked isocyanate curing agent 17%

[0082] Wherein, the hydroxyacrylic resin is a hydroxyacrylate copolymer with a solid content of 59% and a specific gravity of 0.95g / cm 3 , the viscosity is 5500cp (25°C), the acid value is 5mgKOH / g (100%), and the hydroxyl value is 53mgKOH / g.

[0083] Wherein, the solvent is any one of dehydrated xylene, butyl ester, ethylene glycol ether acetate, dimethyl nylonate, dimethyl glutarate, dimethyl adipate and diacetone alcohol or a mixture of more than one species;

[0084] Wherein, the fluorine-containing micropowder is polytetrafluoroethylene micropowder;

[0085] Wherein, the pigment is a mixture of any tw...

Embodiment 2

[0107] A kind of fluorine siliconized acrylic polyurethane coating of the present embodiment comprises the raw material of following percentage by weight:

[0108] Hydroxy Acrylic Resin 55%

[0109] Solvent 18%

[0110] Fluorine micropowder 0.8%

[0111] Pigment 4%

[0112] High hardness oxide 2.5%

[0113] Auxiliary 3.7%

[0114] Blocked isocyanate curing agent 16%

[0115] Wherein, the hydroxyacrylic resin is a hydroxyacrylate copolymer with a solid content of 60% and a specific gravity of 1 g / cm 3 , the viscosity is 5800cp (25°C), the acid value is 7mgKOH / g (100%), and the hydroxyl value is 54mgKOH / g.

[0116] Wherein, described solvent comprises the raw material of following weight percent:

[0117] Xylene 35%

[0118] Butyl ester 13%

[0119] Ethylene glycol ether acetate 15%

[0120] Dimethyl Nylate 6%

[0121] Dimethyl glutarate 12%

[0122] Dimethyl Adipate 8%

[0123] Diacetone Alcohol 11%;

[0124] Wherein, the fluorine-containing micropowder is polyvinyl...

Embodiment 3

[0147] A kind of fluorine siliconized acrylic polyurethane coating of the present embodiment comprises the raw material of following percentage by weight:

[0148] Hydroxy Acrylic Resin 60%

[0149] Solvent 15%

[0150] Fluorine micropowder 1.2%

[0151] Pigment 3%

[0152] High hardness oxide 1.8%

[0153] Auxiliary 4%

[0154] Blocked isocyanate curing agent 15%

[0155] Wherein, the hydroxyacrylic resin is a hydroxyacrylate copolymer with a solid content of 60% and a specific gravity of 1.01g / cm 3 , the viscosity is 6000cp (25°C), the acid value is 9mgKOH / g (100%), and the hydroxyl value is 55mgKOH / g.

[0156] Wherein, described solvent comprises the raw material of following weight percent:

[0157] Xylene 40%

[0158] Butyl ester 12%

[0159] Ethylene glycol ether acetate 10%

[0160] Dimethyl Nylate 15%

[0161] Dimethyl glutarate 6%

[0162] Dimethyl Adipate 5%

[0163] Diacetone Alcohol 12%;

[0164] Wherein, the fluorine-containing micropowder is polyper...

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Abstract

The invention relates to the technical field of protective coatings and particularly relates to an acrylic polyurethane silicofluoride coating. The coating is prepared from the following raw materials in percentage by weight: 50-70% of hydroxyl acrylic resin, 10-20% of solvent, 0.1-3% of fluorine-containing micropowder, 1-5% of pigments, 1-3% of high-hardness oxides, 2-5% of assistant and 10-20% of closed isocyanate curing agent. The acrylic polyurethane silicofluoride coating provided by the invention can be used for improving the protective capability to a steel structure and has good characteristics of ageing resistance, scratch resistance, corrosion resistance, discoloration resistance, pollution resistance and the like. Under the condition of being matched with other primers and intermediate coatings with excellent performances, the coating has an extremely good long-acting protective performance to the steel structure and the protective service life can reach 30 years.

Description

technical field [0001] The invention relates to the technical field of protective coatings, in particular to a fluorinated siliconized acrylic polyurethane coating. Background technique [0002] With the increasingly widespread application of steel structures, the protection of steel structures has also received more and more attention. At present, a lot of work has been done on the anti-corrosion research of steel structure engineering at home and abroad, such as using a coating with high anti-corrosion fillers (such as zinc powder, cloud iron powder, aluminum powder) as a protective coating, or by Primer and sealing topcoat constitute a composite protective coating, etc. These measures have played a certain role in the protection of steel structures, but some problems have also been exposed. For example, when a layer of zinc-rich paint or high-zinc paint is used for anti-corrosion protection of steel structures, the requirements for surface treatment of the substrate are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/16C09D5/08C09D7/12C08G18/62B05D7/16B05D1/36B05D3/02
Inventor 刘奖生李泳锋雷辉斌
Owner 湖南惠电科技有限公司
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