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Epoxy anti-corrosion and anti-fog coating and preparation method thereof

An anti-fog coating and epoxy technology, applied in the field of coatings, can solve the problems of easy condensation on the surface of the substrate, poor coating quality, and lack of anti-fog performance, and achieve the effect of improving anti-fog and anti-fog performance

Inactive Publication Date: 2020-08-14
广东睿智环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most coatings are of poor quality, cannot withstand the erosion of harsh environments such as acid rain, and have a short service life, especially epoxy system powder coatings.
In addition, most epoxy system powder coatings do not have anti-fog properties. After spraying, water mist is easy to condense on the surface of the substrate, which will affect the performance of the coating over time. In low-temperature areas, it is easy to cause the surface of the substrate to freeze. Injury, not conducive to maintaining beauty

Method used

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  • Epoxy anti-corrosion and anti-fog coating and preparation method thereof
  • Epoxy anti-corrosion and anti-fog coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Get 38 parts of epoxy resins, 10 parts of hydroxyl-terminated polydimethylsiloxanes, 15 parts of acrylic-modified alkyd resins, 9 parts of fluorophenyl isocyanate curing agents shown in formula I, 3 parts of gemini quaternary ammonium salts, 4 parts of polyethylene wax, 11 parts of filler, 1.5 parts of defoamer and 1.5 parts of leveling agent, set aside.

[0031] Wherein, the gemini quaternary ammonium salt is a 12-3-12 type Gemini gemini quaternary ammonium salt; the defoamer is methyl silicone oil; and the leveling agent is a fluorine-containing acrylate leveling agent.

[0032] The preparation method of the acrylic acid-modified alkyd resin is as follows: after mixing maleic anhydride, tetraethyl orthosilicate, trimellitic acid, dimethylethanolamine, coconut oil and acrylic resin, esterification reaction at 200°C for 7 Hour; wherein, the mass ratio of maleic anhydride, tetraethylorthosilicate, trimellitic acid, dimethylethanolamine, coconut oil and acrylic resin is 1...

Embodiment 2

[0039] Get 45 parts of epoxy resins, 13 parts of hydroxyl-terminated polydimethylsiloxanes, 20 parts of acrylic-modified alkyd resins, 12 parts of fluorophenyl isocyanate curing agents shown in formula I, 4 parts of gemini quaternary ammonium salts, 5 parts of polyethylene wax, 15 parts of filler, 2 parts of defoamer and 2 parts of leveling agent, set aside.

[0040] Wherein, the gemini quaternary ammonium salt is a 12-3-12 type Gemini gemini quaternary ammonium salt; the defoamer is tributyl phosphate; and the leveling agent is a polyacrylate leveling agent.

[0041]The preparation method of the acrylic acid-modified alkyd resin is as follows: after mixing maleic anhydride, tetraethyl orthosilicate, trimellitic acid, dimethylethanolamine, coconut oil and acrylic resin, esterification reaction at 210°C for 6 Hour; wherein, the mass ratio of maleic anhydride, tetraethylorthosilicate, trimellitic acid, dimethylethanolamine, coconut oil and acrylic resin is 10:4:3:2:3:5.

[0042...

Embodiment 3

[0048] Get 30 parts of epoxy resins, 7 parts of hydroxyl-terminated polydimethylsiloxanes, 10 parts of acrylic-modified alkyd resins, 6 parts of fluorophenyl isocyanate curing agents shown in formula I, 2 parts of gemini quaternary ammonium salts, 2 parts of polyethylene wax, 7 parts of filler, 1 part of defoamer and 1 part of leveling agent, set aside.

[0049] Wherein, the gemini quaternary ammonium salt is a 12-3-12 type Gemini gemini quaternary ammonium salt; the defoamer is ethyl silicone oil; and the leveling agent is a silicone leveling agent.

[0050] The preparation method of the acrylic modified alkyd resin is as follows: after mixing maleic anhydride, tetraethyl orthosilicate, trimellitic acid, dimethylethanolamine, coconut oil and acrylic resin, esterification reaction at 190°C for 8 Hour; wherein, the mass ratio of maleic anhydride, tetraethyl orthosilicate, trimellitic acid, dimethylethanolamine, coconut oil and acrylic resin is 10:2:1:1:1:3.

[0051] The filler...

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Abstract

The invention belongs to the technical field of coating, and discloses epoxy anti-corrosion and anti-fog coating and a preparation method thereof. The epoxy anti-corrosion and anti-fog coating comprises epoxy resin, hydroxyl-terminated polydimethylsiloxane, acrylic acid modified alkyd resin, gemini quaternary ammonium salt, a fluorophenyl isocyanate curing agent, polyethylene wax, a filler, an antifoaming agent and a leveling agent. The epoxy resin, the hydroxyl-terminated polydimethylsiloxane, the acrylic acid modified alkyd resin and the fluorophenyl isocyanate curing agent in the coating are combined for use; the anti-fogging property of the coating is improved, the corrosion resistance of the coating is not influenced, and furthermore, the anti-fogging and anti-corrosion properties ofthe coating are further improved by the gemini quaternary ammonium salt, the polyethylene wax and the filler consisting of graphite, nano aluminum oxide and a nano silicon dioxide-graphene composite.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an epoxy anti-corrosion and anti-fog coating and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection and the corresponding introduction of environmental protection regulations in various countries, low VOC emissions have become one of the goals pursued by the coatings field. Among them, water-based coatings have outstanding advantages in environmental protection and are research hotspots. Most water-based coatings are mainly based on epoxy ester system. Epoxy ester has the excellent characteristics of epoxy system and drying oil at the same time. It has excellent corrosion resistance, hydrolysis resistance and high hardness, but it has slow drying speed and weather resistance. Poor salt spray resistance, insufficient alkali resistance and aging resistance. Compared with water-based coatings, powder coatings are VOC-free a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D167/08C09D133/04C09D183/04C09D123/06C09D5/03C09D5/08C09D7/61C09D7/63C09D7/65
CPCC08K2003/2227C08K2201/011C08L2205/035C09D5/033C09D5/08C09D163/00C08L67/08C08L33/04C08L83/04C08L23/06C08K13/02C08K3/04C08K3/22C08K3/36C08K3/042C08K5/29
Inventor 王文军刘俊锋刘武郑正威李华涛
Owner 广东睿智环保科技股份有限公司
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