Aqueous UV (ultraviolet)-curable fluorine-alcohol-modified epoxy resin coating and preparation method thereof

A technology of epoxy resin coating and epoxy resin, applied in the direction of epoxy resin coating, coating, etc., can solve the problems of light curing efficiency, slow coating curing speed, high curing temperature, etc., and achieve high UV curing efficiency and molecular weight The effect of small distribution and precise and controllable fluorine content

Active Publication Date: 2013-11-20
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese invention patent CN101007922 has prepared nano-zinc-aluminum modified epoxy-fluorocarbon coatings, which have plump paint films, rich colors, high hardness, strong adhesion to the substrate surface, and good corrosion resistance, but the coating curing speed is slow , the curing temperature is high, it is difficult to compare with the light curing efficiency
Chinese invention patent CN101037497 prepares a water-based ultraviolet photocurable coating by using bisphenol A type epoxy resin, acrylic acid and maleic anhydride as raw materials. The curing rate of this coating is fast, but the stain resistance and weather resistance are not strong.

Method used

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  • Aqueous UV (ultraviolet)-curable fluorine-alcohol-modified epoxy resin coating and preparation method thereof

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Effect test

Embodiment 1

[0030] A waterborne UV curable fluoroalcohol modified epoxy resin coating (F n -EMA) and its preparation method, including the following steps:

[0031] S1. Preparation of monoisocyanate-terminated fluorinated isocyanate

[0032] According to the quantity of the substance, 1 part of 2,4-toluene diisocyanate, 1 part of heptafluorobutanol, 1 part of solvent 1,4-dioxane, 0.3wt% of catalyst dibutyl tin dilaurate, Place it in a four-necked flask filled with nitrogen and equipped with a thermometer, a condenser, and a stirring rod. The temperature is controlled to 20°C by heating in an oil bath, and the reaction is stirred for 3 hours, the reaction is stopped, and it is kept for use.

[0033] S2. Side chain fluorine-containing epoxy resin (F n -EP) Preparation

[0034] The resin prepared in step S1 was slowly added dropwise to 1.1 parts of E-44 epoxy resin dissolved in the solvent butyl acetate under the protection of nitrogen, stirred for 30 minutes, the temperature was...

Embodiment 2

[0040] A waterborne UV curable fluoroalcohol modified epoxy resin coating (F n -EMA) and its preparation method, including the following steps:

[0041] S1. Preparation of monoisocyanate-terminated fluorinated isocyanate

[0042] According to the quantity of the substance, place 1 part of 2,4-toluene diisocyanate, 1 part of nonafluorooctanol, 1 part of solvent butyl acetate, 0.3wt% catalyst stannous octoate, and place them in a nitrogen gas and pack In a four-necked flask with a thermometer, a condenser, and a stirring rod, the temperature is controlled to 20°C by heating in an oil bath, and the reaction is stirred for 3 hours, the reaction is stopped, and the reaction is kept for use.

[0043] S2. Side chain fluorine-containing epoxy resin (F n -EP) Preparation

[0044] The resin prepared in step S1, under the protection of nitrogen, was slowly added dropwise to 1.1 parts of E-44 epoxy resin dissolved in the solvent 1,4-dioxane. After stirring for 30 minutes, the tem...

Embodiment 3

[0050] A water-based UV curable fluoroalcohol modified epoxy resin coating (F n -EMA) and its preparation method, including the following steps:

[0051] S1. Preparation of monoisocyanate-terminated fluorinated isocyanate

[0052] According to the quantity of the substance, 1 part of 2,4-toluene diisocyanate, 1 part of tridecafluorooctanol, 1 part of solvent 1,4-dioxane, 0.3wt% of catalyst dibutyltin dilaurate , Placed in a four-necked flask filled with nitrogen and equipped with a thermometer, a condenser, and a stirring rod, heated in an oil bath to control the temperature to 20°C, stirred and reacted for 3 hours, stopped the reaction, and stood still for standby.

[0053] S2. Side chain fluorine-containing epoxy resin (F n -EP) Preparation

[0054] The resin prepared in step S1, under the protection of nitrogen, was slowly added dropwise to 1.1 parts of E-44 epoxy resin dissolved in the solvent 1,4-dioxane. After stirring for 30 minutes, the temperature was rais...

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Abstract

The invention particularly discloses an aqueous UV (ultraviolet)-curable fluorine-alcohol-modified epoxy resin coating and a preparation method thereof. The preparation method comprises the following steps of: firstly reacting a fluorine-containing terminal hydroxy compound with a diisocyanate monomer by utilizing a solution polymerization method so as to prepare mono-isocyanate terminated fluorine-containing isocyanate; carrying out a directed grafting reaction on epoxy resin containing hydroxy groups by utilizing the mono-isocyanate terminated fluorine-containing isocyanate so as to prepare fluorine-alcohol-modified epoxy resin Fn-EP, and further reacting maleic anhydride monomers with epoxy groups at two ends of the Fn-EP to prepare aqueous ultraviolet-curable fluorine-alcohol-modified epoxy resin Fn-EMA; and salifying the obtained Fn-EMA resin by adding a neutralizer, and uniformly mixing the obtained salt with water, so as to obtain the coating. The aqueous UV (ultraviolet)-curable fluorine-alcohol-modified epoxy resin coating has good photo-curing performance and excellent heat resistance, weather fastness and pollution resistance, is a high-performance environment-friendly coating and can be applied to the fields of household daily carpentry, building walls and steel components.

Description

Technical field [0001] The invention belongs to the technical field of paint preparation, and specifically relates to an aqueous UV curable fluoroalcohol modified epoxy resin paint and a preparation method thereof. Background technique [0002] With the development of social economy, people's living standards are getting higher and higher, and the coating industry has become closer to everyone's life in the world and has become an indispensable part of people's lives. The improvement of people's awareness of healthy life has put forward higher and higher requirements for the development of coatings, making modern coatings develop in the direction of high performance, high efficiency, high environmental protection and high-end decorative effects. [0003] Water-based coatings are becoming more and more popular in the market for their non-toxic, environmentally friendly, odorless, low volatile matter, non-flammable and non-explosive high safety features. UV curing technology has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10C08G59/14
Inventor 张力吴业辉陈俊耀
Owner GUANGDONG UNIV OF TECH
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