Bicomponent silicofluoride acrylic polyurethane coating as well as preparation and application methods thereof

A technology of acrylic polyurethane and fluorine siliconization, which is applied in polyurea/polyurethane coatings, coatings, devices for coating liquid on surfaces, etc.

Active Publication Date: 2014-09-03
广东惠电科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to aim at the deficiencies of the prior art, to provide a two-component fluorosilicified acrylic polyurethane coating and its preparation and application method. Anti-aging, anti-scratch, anti-corrosion, anti-discoloration, anti-pollution and other characteristics, when used in conjunction with other excellent primers and primers, it can achieve excellent long-term protection performance on steel structures and long-term protection life up to 30 years

Method used

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  • Bicomponent silicofluoride acrylic polyurethane coating as well as preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] A two-component fluorosiliconized acrylic polyurethane coating of this embodiment includes component A and component B, and the mass ratio of component A to component B is 3:1;

[0085] Component A comprises the following raw materials in parts by weight:

[0086] Hydroxy acrylic resin 50 parts

[0087] Solvent 24 parts

[0088] Fluoride powder 1 part

[0089] Pigment 22 parts

[0090] High hardness oxide 1 part

[0091] Auxiliary 2 parts

[0092] Part B includes the following raw materials in parts by weight:

[0093] Blocked isocyanate curing agent 50 parts

[0094] Solvent 50 parts

[0095] 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.

[0096] Wherein, the solvent is dehydrated xylene, anhydrous butyl ester, ethylene glycol ethyl ether acetate, dimethyl nylonate, dimethy...

Embodiment 2

[0122] A two-component fluorosiliconized acrylic polyurethane coating of this embodiment comprises component A and component B, and the mass ratio of component A and component B is 3.5:1;

[0123] Component A comprises the following raw materials in parts by weight:

[0124] Hydroxy acrylic resin 55 parts

[0125] Solvent 20 parts

[0126] Fluoride powder 2 parts

[0127] Pigment 18 parts

[0128] High hardness oxide 3 parts

[0129] Auxiliary 2 parts

[0130] Part B includes the following raw materials in parts by weight:

[0131] 60 parts of blocked isocyanate curing agent

[0132] Solvent 40 parts

[0133] 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.

[0134] Wherein, the solvent in the described component A and component B includes the following raw materials in weight percentag...

Embodiment 3

[0167] A two-component fluorosiliconized acrylic polyurethane coating of this embodiment comprises component A and component B, and the mass ratio of component A and component B is 4:1;

[0168] Component A comprises the following raw materials in parts by weight:

[0169] Hydroxy acrylic resin 60 parts

[0170] 18 parts of solvent

[0171] Fluorine-containing fine powder 0.5 parts

[0172] Pigment 15 parts

[0173] High hardness oxide 1.5 parts

[0174] Auxiliary 5 parts

[0175] Part B includes the following raw materials in parts by weight:

[0176] 65 parts of blocked isocyanate curing agent

[0177] Solvent 35 parts

[0178] 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.

[0179] Wherein, the solvent in the described component A and component B includes the following raw materi...

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Abstract

The invention relates to the technical field of protection coatings and in particular relates to a bicomponent silicofluoride acrylic polyurethane coating. The coating comprises a first component and a second component, wherein the mass ratio of the first component to the second component is (3 : 1) to (5 : 1); the first component comprises the following raw materials by weight parts: 50-70 parts of hydroxy acrylic resin, 15-24 parts of a solvent, 0.1-3 parts of fluorine-containing micropowder, 10-25 parts of a pigment, 1-3 parts of high-hardness oxide and 2-5 parts of aids; the second component comprises the following raw materials in parts by weight: 50-80 parts of a closed isocyanate curing agent and 20-50 parts of a solvent. According to the coating, the capability of protecting a steel structure can be improved; the coating has the characteristics of good ageing resistance, scratch resistance, corrosion prevention, color change prevention, pollution prevention and the like, and can achieve a very good long-acting protection effect on the steel structure by combination with other base paint and intermediate paint with excellent performance; and the protection life can be 30 years.

Description

Technical field [0001] The present invention involves the field of protective coating technology, especially a dual -component of fluorine siliconized acrylic polyurethane coatings. Background technique [0002] With the increasingly widespread application of steel structure, the protection of steel structure has also received more and more attention.At present, the study of anti -corrosion of steel structure engineering at home and abroad has done a lot of work, such as a high coatings with high corrosion fillers (such as zinc powder, cloud iron powder, aluminum powder) as a protective coating, or by corrosion corrosion.The primer and closed paint constitute a composite protective coating. These measures have a certain effect on the protection of the steel structure, but they also expose some problems.For example, when a layer of zinc -rich paint or high zinc paint is preserved to protect the steel structure, the surface treatment of the substrate is high, and the zinc -rich coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04B05D7/14B05D3/12B05D3/02
Inventor 刘奖生李泳锋雷辉斌
Owner 广东惠电科技发展有限公司
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