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Silicon- and fluorine-containing epoxy (meth) acrylate UV-curing composite coating and preparation method thereof

An acrylate and composite coating technology, applied in the direction of coating, etc., can solve the problems of difficult to obtain raw materials, easy to wear, poor compatibility between the microphases of composite coatings, etc., to achieve excellent chemical stability and surface activity, good stain resistance. and corrosion resistance, the effect of increasing the curing crosslinking density

Inactive Publication Date: 2012-08-29
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, commonly used UV-curable coatings are mainly produced by the reaction of epoxy resin with methacrylic acid or acrylic acid, which has the characteristics of rich sources, high hardness and low price, but has problems such as poor weather resistance and abrasion resistance, easy cracking and pollution.
Adding silicon materials to the coating can improve the weather resistance, alkali resistance and gloss of the coating, and adding organic fluorine compounds can show obvious anti-fouling effect; If the combined reaction occurs, the micro-phase compatibility of the composite coating will be poor, the performance of the coating will not be fully exerted, and the service life will be shortened.
Chinese patent CN1432613A discloses a silicon and fluorine-containing copolymer coating. Although it has the characteristics of fluorine and silicon materials, its preparation process requires multiple reactions, and the raw materials are not easy to obtain. Most of the copolymers are linear materials and contain photosensitive groups. Less clusters, prone to wear and shrinkage deformation after curing
Chinese patent CN101333347A discloses an anti-fouling and anti-graffiti coating. Silicone and fluoroacrylate oligomers are applied to the coating, but there are problems of coating wear and shrinkage deformation

Method used

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  • Silicon- and fluorine-containing epoxy (meth) acrylate UV-curing composite coating and preparation method thereof
  • Silicon- and fluorine-containing epoxy (meth) acrylate UV-curing composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Take 100 parts by weight of bisphenol A type epoxy resin (epoxy value 0.44) and put it into a reactor equipped with a stirrer, dropping funnel and thermometer, heat and stir to 80°C, add dropwise 37 parts of methacrylic acid, four A mixture of 1.2 parts of butylammonium bromide and 0.02 parts of p-methoxyphenol was heated up to 108°C and reacted for 6 hours to obtain bisphenol A epoxy methacrylate resin;

[0035] (2) Take 1.5 parts of tetramethylammonium hydroxide, 12 parts of water, and 100 parts of isopropanol into a reactor equipped with a stirrer, dropping funnel and thermometer, and slowly add methacryloyloxymethyl trimethyl A mixture of 100 parts of oxysilane and 50 parts of isopropanol, reacted at room temperature for 2 hours, removed isopropanol and water, added 220 parts of toluene, condensed and refluxed at 85 ° C for 3.5 hours, removed toluene and water, and obtained methacryloyl Oxygen cage silsesquioxane;

[0036] (3) 100 parts by weight of bisphenol A...

Embodiment 2

[0044] (1) Take 100 parts by weight of bisphenol A type epoxy resin (epoxy value 0.54) and put it into a reactor equipped with a stirrer, dropping funnel and thermometer, heat and stir to 80°C, add dropwise 37 parts of methacrylic acid, three A mixture of 1.2 parts of ethyl benzyl ammonium chloride and 0.02 parts of p-methoxyphenol was heated to 112°C for 6 hours to obtain bisphenol A epoxy methacrylate resin;

[0045] (2) Get 3 parts of hydrochloric acid, 15 parts of water, and 100 parts of acetone into a reactor equipped with a stirrer, dropping funnel and thermometer, and slowly add 100 parts of methacryloxymethyltriethoxysilane and A mixture of 50 parts of acetone, react at room temperature for 2 hours, remove isopropanol and water, add 200 parts of toluene, reflux at 85°C for 3.5 hours, remove toluene and water, and obtain cage-type silsesquisil containing methacryloyloxy Oxygen;

[0046] (3) 100 parts by weight of bisphenol A type epoxy methacrylate prepared in step 1 i...

Embodiment 3

[0054] (1) Take 100 parts by weight of bisphenol A epoxy resin (epoxy value 0.51) and put it into a reactor equipped with a mixer, dropping funnel and thermometer, heat and stir to 80°C, add dropwise 36 parts of acrylic acid, triethyl A mixture of 1.5 parts of benzyl ammonium bromide and 0.02 parts of p-hydroxyanisole was heated to 110°C for 4 hours to obtain bisphenol A epoxy acrylate resin;

[0055] (2) Get 2.5 parts of formic acid, 10 parts of water, and 150 parts of tetrahydrofuran into a reactor equipped with a stirrer, dropping funnel and thermometer, and slowly add 100 parts of methacryloxypropyltriethoxysilane and A mixture of 30 parts of tetrahydrofuran, react at room temperature for 3 hours, remove isopropanol and water, add 200 parts of toluene, reflux at 85°C for 3.5 hours, remove toluene and water, and obtain cage-type silsesquisil containing methacryloyloxy Oxygen;

[0056] (3) 100 parts by weight of bisphenol A type epoxy acrylate prepared in step 1 is added in...

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Abstract

The invention discloses a silicon and fluorine-containing epoxy (meth) acrylate UV-curing composite coating, comprising the following ingredients of: epoxy (meth) acrylate, polyhedral iligomeric silsesquioxane, fluorine-containing (meth) acrylate, an active diluent monomer, a photoinitiator and an auxiliary agent. Such a composite coating, with excellent fouling resistance, corrosion resistance, weather resistance, abrasive resistance, water resistance, fouling resistance and dynamic performance, is an environmentally friendly coating which is suitable for building material, optical fiber wrapping and the coating of the surface of metal element.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an epoxy (meth)acrylate ultraviolet curing composite coating containing silicon and fluorine and a preparation method thereof. Background technique [0002] UV-curable coatings have a very high curing rate, do not contain solvents or a small amount of inert diluents, and do not require heating during curing. Therefore, it has the characteristics of low pollution, low energy consumption, high efficiency, and wide applicability. It has been widely used in recent years. New building materials, metal electronic component packaging, optical fiber coating and bonding and other fields. At present, commonly used UV-curable coatings are mainly produced by the reaction of epoxy resin with methacrylic acid or acrylic acid, which has the characteristics of rich sources, high hardness and low price, but has problems such as poor weather resistance and abrasion resistance, easy cracking and pollution. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/06
Inventor 刘伟区唐春怡
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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