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Fluorine-containing epoxy composite cation photocureable coating as well as preparation method and application thereof

A technology of light-curing coatings and cations, applied in the direction of epoxy resin coatings, coatings, etc., can solve the problems of high cost, coating hydrophobicity, anti-fouling performance, complex synthesis methods, etc., to improve compatibility, The effect of excellent hydrophobic properties

Active Publication Date: 2013-04-03
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current fluorine-containing epoxy resin is mainly to add a single or a small amount of fluorine atoms to the main chain segment. Although this type of monomer can improve the heat resistance and corrosion resistance of the coating, but because of its low fluorine content, it is harmful to the coating. The improvement of hydrophobic performance and stain resistance is not obvious, and the synthesis method is complicated and the cost is high, which limits its application range

Method used

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  • Fluorine-containing epoxy composite cation photocureable coating as well as preparation method and application thereof
  • Fluorine-containing epoxy composite cation photocureable coating as well as preparation method and application thereof
  • Fluorine-containing epoxy composite cation photocureable coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Mix 0.1 parts by mass of dibutyl malonate, 50 parts by mass of toluene and 0.5 parts by mass of tetrabutylammonium hydroxide aqueous solution with a concentration of 25% by mass, react for 5 hours, and remove toluene under reduced pressure; then add 90 parts by mass part tetrahydrofuran and 5 parts by mass trifluoroethyl acrylate monomer, mixed uniformly and reacted for 0.1h, after the tetrahydrofuran was removed under reduced pressure, the mixed solution of the obtained product at 20°C (30 parts by mass trifluoroacetic acid and 60 parts by mass dioxygen Hexacyclic) hydrolyzed for 4.5h to obtain a fluorine-containing polymer containing a carboxyl-terminated group.

[0038] (2) Add 2 mass parts of carboxyl-terminated fluoropolymer prepared in step (1) into 150 mass parts of tetrahydrofuran and mix evenly, then add 4 mass parts of glycidol, 5 mass parts of dehydrating agent (N,N'- Dicyclohexylcarbodiimide, DCC) and 1.2 mass parts of catalyst (4-dimethylaminopyridine, ...

Embodiment 2

[0044] (1) Mix 2.8 parts by mass of dibutyl malonate, 150 parts by mass of toluene, and 20 parts by mass of tetrabutylammonium hydroxide aqueous solution with a concentration of 25% by mass, react for 1 hour, remove toluene under reduced pressure, and then add 100 parts by mass Parts of tetrahydrofuran and 20 parts by mass of -1H, -1H-perfluorooctyl methacrylate monomer, mixed uniformly and reacted for 3 hours, after removing tetrahydrofuran under reduced pressure, the mixed solution of the obtained product at 100°C (5 parts by mass of three Fluoroacetic acid and 57 parts by mass of dioxane) were hydrolyzed for 12 hours to obtain a fluorine-containing polymer containing terminal carboxyl groups.

[0045] (2) Add 10 parts by mass of the carboxyl-terminated fluoropolymer prepared in step (1) to 30 parts by mass of tetrahydrofuran and mix evenly, then add 1 part by mass of glycidol and 2.5 parts by mass of dehydrating agent N,N'- Dicyclohexylcarbodiimide (DCC) and 1 mass part of ...

Embodiment 3

[0051] (1) Mix 0.6 parts by mass of dibutyl malonate, 80 parts by mass of toluene and 10 parts by mass of tetrabutylammonium hydroxide aqueous solution with a concentration of 25% by mass, react for 10 hours, remove toluene under reduced pressure, and then add 80 parts by mass Tetrahydrofuran and 10 mass parts of trifluoroethyl methacrylate monomers were mixed uniformly and reacted for 2 hours. After the tetrahydrofuran was removed under reduced pressure, the mixed solution of the obtained product at 70°C (10 mass parts of trifluoroacetic acid and 30 mass parts of dioxygen Hexacyclic) hydrolyzed for 1 h to obtain a fluorine-containing polymer containing a carboxyl-terminated group.

[0052] (2) Add 2 mass parts of carboxyl-terminated fluoropolymer prepared in step (1) into 80 mass parts of tetrahydrofuran and mix evenly, then add 7 mass parts of glycidol, 1 mass part of dehydrating agent N,N'-di Cyclohexylcarbodiimide (DCC) and 0.05 parts by mass of catalyst 4-dimethylaminopyr...

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Abstract

The invention discloses a fluorine-containing epoxy composite cation photocureable coating as well as a preparation method and an application thereof. The coating comprises the following components: 100 parts of glycidyl ether type epoxy resin, 0.01-0.5 parts of fluorine-containing epoxy resin, 2-20 parts of epoxy diluting agent, 0.5-8 parts of cation photoinitiator, 2-30 parts of inorganic salt filler, 0.05-2 parts of de-foaming agent, 0.05-2 parts of dispersant and 0.01-0.5 parts of flatting agent. The fluorine-containing epoxy composite cation photocureable coating is obtained by adding the fluorine-containing epoxy resin into the glycidyl ether type epoxy resin and then photocuring the mixture. The fluorine-containing epoxy resin has the relatively higher molecular weight and fluorine content so that fluorine-containing atoms are more easily transferred to the air-coating surface of the composite coating, and the fluorine content of the surface is greatly more than the fluorine content of the body; and therefore, less fluorine-containing epoxy resin enables the composite photocureable coating to have the advantages of excellent lyophobic performance, pollution resistance, weather resistance and the like, and the application range is wide.

Description

technical field [0001] The invention belongs to the field of chemical coatings, in particular to a fluorine-containing epoxy type composite cationic light-curing coating, a preparation method and application thereof. Background technique [0002] Ultraviolet curing technology has the characteristics of high efficiency, low energy consumption and safe and non-polluting environment, and is widely used in industrial production such as coatings, inks and electronics. In particular, ultraviolet cationic photocuring technology has the characteristics of anaerobic polymerization inhibition, difficult reaction termination, post-curing, and small volume shrinkage, which makes cationic photocuring technology have greater application value than free radical photocuring. Among them, glycidyl ether-type epoxy resin UV-curable coatings are widely used because of their low price, abundant sources, high hardness, and good transparency, but they also have disadvantages such as easy moisture ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D163/04C09D7/12C08F120/22C08F120/24C08F8/14C08F8/12
Inventor 刘伟区闫振龙
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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