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Fluorine-containing prepolymer modified waterborne epoxy (meth)acrylate composite UV curing coating and its preparation and application

A water-based epoxy and acrylate technology, which is applied in the field of polymer coatings, can solve the problems of lower coating body performance, difficult migration of fluorine-containing groups, and opaque materials, and achieve good coating adaptability, low viscosity, and low cost. Effect

Active Publication Date: 2020-04-17
中科广化(重庆)新材料研究院有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the way of physical blending, the compatibility between organic fluoropolymer and epoxy coating is poor, phase separation occurs, the material becomes opaque, and the bulk performance of the coating is also reduced; while adding small molecule fluorine-containing reactive monomers, due to Short fluorine-containing chains are easy to be embedded, and fluorine-containing groups are difficult to migrate to the surface of the material. To achieve the desired modification effect, a large amount of fluorine-containing monomers needs to be added

Method used

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  • Fluorine-containing prepolymer modified waterborne epoxy (meth)acrylate composite UV curing coating and its preparation and application
  • Fluorine-containing prepolymer modified waterborne epoxy (meth)acrylate composite UV curing coating and its preparation and application
  • Fluorine-containing prepolymer modified waterborne epoxy (meth)acrylate composite UV curing coating and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Preparation of epoxy methacrylate resin: 100 parts by mass of bisphenol A type epoxy resin (epoxy value 0.51) is added in the reactor that reflux condenser, dropping funnel, thermometer and stirrer are housed, Heat and stir to 80°C, then add 2 parts by mass of tetrabutylammonium bromide, 0.8 parts by mass of hydroquinone and 50 parts by mass of methacrylic acid, raise the temperature to 110°C, and react for 4 hours to obtain epoxy methacrylate resin.

[0065] (2) Preparation of fluorine-containing prepolymer: add 30 parts by mass of methyl perfluorocyclohexyl acrylate and 55 parts by mass of dioxane into a container, heat up to 80° C., add 1 part by mass of 6-mercaptohexanol, pass 0.3 parts by mass of benzoyl oxide, stirred and reacted for 9 hours to obtain a hydroxyl-terminated fluorine-containing prepolymer solution; the temperature was cooled to 0°C in an ice bath, and 1.8 parts by mass of triethylamine and 1.5 parts by mass of acryloyl chloride were added to the...

Embodiment 2

[0069] (1) Preparation of epoxy acrylate resin: add 100 parts by mass of bisphenol A type epoxy resin (epoxy value 0.51) into the reactor equipped with reflux condenser, dropping funnel, thermometer and stirrer, heat and stir to 75°C, then add 1.5 parts by mass of tetrabutylammonium bromide, 0.5 parts by mass of hydroquinone and 40 parts by mass of acrylic acid, raise the temperature to 105°C, and react for 4 hours to obtain an epoxy acrylate resin.

[0070] (2) Preparation of fluorine-containing prepolymer: Add 30 parts by mass of 1H, 1H-perfluorooctyl methacrylate and 55 parts by mass of N,N-dimethylformamide in a container, heat up to 90°C, Add 3 parts by mass of 3-mercapto-1-hexanol and 0.4 parts by mass of azobisisobutyronitrile, stir and react for 8 hours to obtain a hydroxyl-terminated fluorine-containing prepolymer solution; 4 parts by mass of acryloyl chloride were added to the hydroxyl-terminated fluorine-containing prepolymer solution, stirred for 8 hours, and the f...

Embodiment 3

[0074] (1) Preparation of epoxy acrylate resin: 100 parts by mass of resorcinol bisglycidyl ether type epoxy resin (epoxy value 0.85) is added to the reaction that reflux condenser, dropping funnel, thermometer and stirrer are housed In a container, heat and stir to 78°C, then add 0.08 parts by mass of tetrabutylammonium bromide, 1.5 parts by mass of hydroquinone and 50 parts by mass of acrylic acid, raise the temperature to 108°C, and react for 2.5 hours to obtain epoxy acrylate resin .

[0075] (2) Preparation of fluorine-containing prepolymer: Add 40 parts by mass of heptadecanyl methacrylate and 80 parts by mass of ethyl acetate in a container, heat up to 78°C, add 1.2 parts by mass of 3-mercapto-1-propanol parts, 0.3 parts by mass of cumene peroxide, stirred and reacted for 9 hours to obtain a fluorine-containing prepolymer solution with terminal hydroxyl groups; cooled to 0°C in an ice bath, 2.2 parts by mass of triethylamine and 2 parts by mass of methacryloyl chloride ...

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Abstract

The invention discloses a fluoropolymer modified water-based epoxy (methyl) acrylate composite UV curable coating as well as preparation and application thereof. The composite UV curable coating comprises the following components in parts by mass: 100 parts of epoxy (methyl) acrylate resin, 0.01-50 parts of fluoropolymer, 5-90 parts of double-bond-containing polyoxyethylene ether modified epoxy resin, 0.5-8 parts of a photoinitiator, 0.1-4 parts of an antifoaming agent, 0.5-5 parts of a dispersing agent and 5-40 parts of deionized water. The traditional diluent is replaced with water, and thecomposite UV curable coating has the advantages of low cost, low viscosity, excellent coatability, simplicity in equipment cleaning, zero toxicity, zero irritation and the like. Moreover, hydrophilicpolyether segments are introduced into the coating disclosed by the invention, so that the system has excellent hydrophilic property. The composite UV curable coating disclosed by the invention can beapplied to the fields of electronic packaging, architectural coatings, metal coatings and the like.

Description

technical field [0001] The invention belongs to the field of polymer coatings, in particular to a fluorine-containing prepolymer modified water-based epoxy (meth)acrylate composite UV curing coating and its preparation and application. Background technique [0002] UV-curable epoxy (meth)acrylic resin coatings have the advantages of good mechanical properties, high transparency and low price, so they are widely used in electronic packaging, ink printing, architectural coatings and other fields. However, the traditional oil-based UV curing system still has deficiencies in environmental protection, personal health, process operation and film performance control, and is more expensive. In addition, the diluent monomer therein has certain irritation and odor, which will cause health hazards to the human body. [0003] The water-based light-curing system has inherited and developed many advantages of the traditional UV-curing technology of water-based coating technology, and has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D187/00C09D133/16C08G59/17C08G81/00
CPCC08G59/1466C08G81/00C08L2205/03C09D163/10C08L87/005C08L33/16
Inventor 刘伟区石红义王政芳
Owner 中科广化(重庆)新材料研究院有限公司
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